CN107360296B

CN107360296B - A kind of method and SDH terminal device for transmitting official telephone business

Info

Publication number: CN107360296B
Application number: CN201710516140.8A
Authority: CN
Inventors: 孙国新; 徐静茹
Original assignee: Raisecom Technology Co Ltd
Current assignee: Raisecom Technology Co Ltd
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2019-11-01
Anticipated expiration: 2037-06-29
Also published as: CN107360296A

Abstract

The embodiment of the invention discloses a kind of methods and SDH terminal device for transmitting official telephone business, comprising: official telephone Service control board records the link information in place of the board being electrically connected with official telephone Service control board in place in affiliated SDH terminal device；Official telephone Service control board determines the current crossedpath of official telephone business transmitting according to the link information in place of the board being electrically connected with official telephone Service control board in place recorded；When official telephone Service control board receives official telephone business, official telephone business is forwarded by official telephone Service control board according to current crossedpath.Scheme through the embodiment of the present invention makes each website SDH equipment realize official telephone business with unified mechanism.

Description

A kind of method and SDH terminal device for transmitting official telephone business

Technical field

The present invention relates to synchronous digital system (SDH, Synchronous Digital Hierarchy) technology, espespecially one The method and SDH terminal device of kind transmitting official telephone business.

Background technique

As the covering surface of cellular mobile network is increasing, more and more places can be realized a little by mobile phone Communication to point.But still have the mobile network signals covering in some places bad or do not cover, these places include state Interior (e.g., some outlying mountain areas) also include external (e.g., some areas of certain less developed countries).Movable signal covering is bad, Main performance is exactly to have signal in several meters on a road, walks several meters further along just without signal, then walks further along several Rice, and have signal, this has all seriously affected the call demand of user as not covering.Currently, transmission network also mainly with Based on SDH, but client's access service is various, the certain professional degree of device configuration needs, and really on duty in client's computer room Personnel, the equipment that may will not operate computer room completely.Therefore, area that is bad or not covering is covered in this mobile network The computer room in domain can realize the call of local side and distal end, distal end and distal end by official telephone function, can be more easily real The mutual cooperation of existing both sides, improves working efficiency, but is usually located at the configuration of each SDH equipment of distal end and local side not It is identical, thus in the case where the normal traffic communication of distal end drawn game end, how to make each website SDH equipment with unified mechanism Realize that official telephone business is a technical problem to be solved urgently.

Summary of the invention

The embodiment of the invention provides a kind of methods and SDH terminal device for transmitting official telephone business, can make each A website SDH equipment realizes official telephone business with unified mechanism.

The embodiment of the invention provides a kind of methods for transmitting official telephone business, are applied to synchronous digital system SDH chain SDH terminal device in l network；The described method includes:

Official telephone Service control board is set in the SDH terminal device and is electrically connected with official telephone Service control board The board connect；

Official telephone Service control board record belonging to it is in place with official telephone Service control board in SDH terminal device The link information in place of the board of electrical connection；

Official telephone Service control board in place is electrically connected according to what is recorded with official telephone Service control board The link information in place of board determines the current crossedpath of official telephone business transmitting；

When official telephone Service control board receives official telephone business, official telephone Service control board is according to working as Official telephone business is forwarded by preceding crossedpath.

Optionally, determination receives official telephone business to the official telephone Service control board in the following manner:

Predetermined position expense interface on the official telephone Service control board and described in place with official telephone industry Predetermined position expense interface on the board of business Control card electrical connection is electrically connected correspondingly；

Determination receives public affairs when the official telephone Service control board is from the expense interface in predetermined position to business Business telephone service.

Optionally, the board being electrically connected with official telephone Service control board are as follows: be provided with the network side input end SDH The main group road board of mouth and the network side output port SDH；The current crossedpath includes:

The main group road board that the port SDH is connected is inputted with network side on the board of main group road on official telephone Service control board On expense interface connection expense be interfaced on official telephone Service control board on the board of main group road with network side export Crossedpath between the expense interface of expense interface connection on the connected main group road board in the port SDH.

Optionally, the official telephone Service control board carries out the official telephone business according to current crossedpath Forwarding includes:

Official telephone business is opened from what the expense interface connected with the network side of the main group road board input port SDH was connect Pin joint mouth is forwarded to the expense interface that the expense interface connected with the network side of the main group road board output port SDH is connect；

The method also includes:

When the expense interface of main group road board is electric to the public affair from the official telephone Service control board When call business, the network side that official telephone business is forwarded to main group road board is exported into the port SDH, by the network of main group road board The side output port SDH is sent to network side.

Optionally, the board being electrically connected with official telephone Service control board are as follows: be provided with the network side input end SDH Mouth and the main group road board of the network side output port SDH are provided with the telephony interface output and input for official telephone business Official telephone service access board；

The current crossedpath includes:

The expense being connect on official telephone Service control board with the expense interface of the official telephone service access board It is interfaced on official telephone Service control board and exports the main group road board that the port SDH is connected with network side on the board of main group road Expense interface connection expense interface between crossedpath；Or

The main group road plate that the port SDH is connected is inputted with network side on the board of main group road on official telephone Service control board The expense of the expense interface connection of card is interfaced on official telephone Service control board and the official telephone service access board The crossedpath between expense interface that expense interface as output connects.

When the official telephone business that official telephone Service control board receives are as follows: by official telephone service access board Expense interface input official telephone business when, by official telephone business from official telephone Service control board with official telephone The expense interface of the expense interface connection of service access board is forwarded to be connected with the network side of the main group road board output port SDH Main group road board expense interface connection expense interface；Alternatively,

When the official telephone business that official telephone Service control board receives are as follows: pass through the expense interface of main group road board When the official telephone business of input, official telephone business is forwarded from the expense interface connecting with the expense interface of main group road board To the expense interface being connect with the expense interface of official telephone service access board.

Optionally, the method also includes:

The official telephone business is forwarded to and main group road from the expense interface connecting with official telephone service access board After the expense interface of the expense interface connection of the connected main group road board in the network side output port SDH of board, via main group road The expense interface of board is transmitted to the network side output port SDH of main group road board, exports the end SDH by main group road board network side Mouth is sent to network side；Or

The official telephone business is forwarded to and public affair electricity from the expense interface connecting with the expense interface of main group road board After call business accesses the expense interface of expense interface connection of board, the official telephone service access board is judged as local need When the official telephone business to be exported, the telephony interface that the official telephone business is forwarded to this board is exported；Otherwise, by institute Official telephone business is stated as output, official telephone Service control board is forwarded to by the expense interface of this board.

Optionally, the board being electrically connected with official telephone Service control board are as follows: be provided with the network side input end SDH Mouth and the main group road board of the network side output port SDH are provided with the network side input port SDH and the network side output port SDH Standby group road board, the board that main group road board and standby group road board composition are mutually protected；

The method also includes:

The official telephone Service control board record board being electrically connected with official telephone Service control board in place Link information in place after, determine one of main group road board and the standby group road board be work at present group road board；With And the port network side SDH on the board of the main group road or the port network side SDH on the standby group road board are determined to work as The port preceding network side SDH；

The current crossedpath includes:

On the work at present group road board being connected on official telephone Service control board with the current network side input port SDH The expense of expense interface connection be interfaced on official telephone Service control board and be connected with the current network side output port SDH Crossedpath between the expense interface of expense interface connection on the board of work at present group road.

Optionally,

The official telephone business is forwarded packet according to current crossedpath by the official telephone Service control board It includes:

When the official telephone business that official telephone Service control board receives are as follows: pass through the expense interface of main group road board When the official telephone business of input, official telephone business is connected from the expense interface being connected with the current network side input port SDH The expense interface connect is forwarded to the expense interface that the expense interface connected with the current network side output port SDH is connect；

The method also includes:

When the expense interface of work at present group road board is to from the official telephone Service control board When official telephone business, official telephone business is forwarded to the current network side output port SDH by work at present group road board, Network side is sent to by the current network side output port SDH.

Optionally, the board being electrically connected with official telephone Service control board are as follows: be provided with the network side input end SDH Mouth and the main group road board of the network side output port SDH are provided with the network side input port SDH and the network side output port SDH Standby group road board, be provided with the official telephone service access plate of the telephony interface output and input for official telephone business Card；Wherein, main group road board and the standby group road board constitute the board mutually protected；

The method also includes:

The current crossedpath includes:

The expense being connect on official telephone Service control board with the expense interface of the official telephone service access board The crossedpath being interfaced between the expense interface being connect on official telephone Service control board with expense interface A；Wherein, described Expense interface A is the expense interface that the work at present group road board that the port SDH is connected is exported with current network side；

Alternatively, being interfaced to official telephone business control with the expense interface B expense connecting on official telephone Service control board Intersecting between the expense interface being connect with the official telephone service access board as the expense interface of output on making sheet card Path；Wherein, the expense interface B is the expense that the work at present group road board that the port SDH is connected is inputted with current network side Interface.

Optionally,

When official telephone Service control board receives official telephone business are as follows: by opening for official telephone service access board Pin joint mouth input official telephone business when, by official telephone business from official telephone Service control board with official telephone industry The expense interface of business access board connection is forwarded to the expense interface connecting with expense interface A；Or

When official telephone Service control board receives official telephone business are as follows: pass through the expense of work at present group road board When the official telephone business of interface input, official telephone business is opened from what the expense interface of work at present group road board was connect Pin joint mouth is forwarded to the expense interface connecting with official telephone service access board as the expense interface of output.

Optionally, the method also includes:

The official telephone business is forwarded to from the expense interface connecting with official telephone service access board and connects with expense After the expense interface of mouth A connection, the current network side output end SDH is forwarded to via the expense interface of work at present group road board Mouthful, network side is sent to by the current network side output port SDH；Alternatively, the official telephone business from work at present group road The expense interface that the expense interface of board expense interface connection is forwarded to official telephone service access board as output is connect Expense interface after, when the official telephone service access board is judged as the official telephone business for locally needing to export, by institute State the telephony interface output that official telephone business is forwarded to this board；Otherwise, the official telephone business is made by this board Official telephone Service control board is forwarded to for the expense interface of output.

Optionally, official telephone business is forwarded to the current network side output port SDH by work at present group road board Include:

When work at present group road, board is main group road board and the current network side output port SDH is main group road When the port SDH of board, the official telephone business is sent directly to the main group road by the expense interface of main group road board The port output SDH of board；

When work at present group road, board is standby group road board and the current network side output port SDH is standby group road When the port SDH of board, the official telephone business is sent directly to the standby group road by the expense interface of standby group road board The port output SDH of board；

When work at present group road, board is the standby group road board but the current network side output port SDH is institute When stating the port SDH of main group road board, sends the official telephone business to by the expense interface of standby group road board and connect with it The port output SDH of the main group road board connect；

When work at present group road, board is main group road board but the current network side output port SDH is institute When the port SDH of the road Shu Beiqun board, sends the official telephone business to by the expense interface of main group road board and connect with it The port output SDH of the road Jie Beiqun board.

Optionally, the official telephone service access board is judged as that the official telephone business for locally needing to export is specific Are as follows: the reception photos and sending messages that the official telephone business includes are local information.

The embodiment of the present invention also proposed a kind of synchronous digital system SDH terminal device, and the SDH terminal device includes holding Row any one of the above transmit official telephone business method official telephone Service control board and with official telephone business control The board of making sheet card electrical connection.

Compared with the relevant technologies, the embodiment of the present invention includes: official telephone Service control board records affiliated SDH terminal and sets The link information in place of the board being electrically connected with official telephone Service control board in place in standby；Official telephone Service control plate Card determines public affair according to the link information in place of the board being electrically connected with official telephone Service control board in place recorded The current crossedpath of telephone service transmitting；When official telephone Service control board receives official telephone business, public affair electricity Official telephone business is forwarded by call business Control card according to current crossedpath.Scheme through the embodiment of the present invention, Each website SDH equipment is set to realize official telephone business with unified mechanism.

Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right Specifically noted structure is achieved and obtained in claim and attached drawing.

Detailed description of the invention

Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.

Fig. 1 is the structure composition schematic diagram of SDH of embodiment of the present invention terminal device；

Fig. 2 is the embodiment of the present invention in the case where official telephone service access board is not in place, and when main group road, board is Crossedpath schematic diagram when work at present group road board, in official telephone Control card；

Fig. 3 is the embodiment of the present invention in the case where official telephone service access board is not in place, when standby group road board is Crossedpath schematic diagram when work at present group road board, in official telephone Control card；

Fig. 4 is the embodiment of the present invention in the case where official telephone service access board is in place, when main group road board is to work as Crossedpath schematic diagram when preceding work group road board, in official telephone Control card；

Fig. 5 is the embodiment of the present invention in the case where official telephone service access board is in place, when standby group road board is to work as Crossedpath schematic diagram when preceding work group road board, in official telephone Service control board；

Fig. 6 is the method flow that SDH of embodiment of the present invention terminal device transmits official telephone business in SDH recurrent network Figure；

Fig. 7 is the schematic diagram of communication link protection of embodiment of the present invention scene one；

Fig. 8 is the schematic diagram of communication link protection of embodiment of the present invention scene two；

Fig. 9 is the schematic diagram of communication link protection of embodiment of the present invention scene three；

Figure 10 is the schematic diagram of communication link protection of embodiment of the present invention scene four；

Figure 11 is the schematic diagram of communication link protection of embodiment of the present invention scene five；

Figure 12 is the schematic diagram of communication link protection of embodiment of the present invention scene six.

Specific embodiment

The embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can mutual any combination.

Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable Sequence executes shown or described step.

The embodiment of the present invention provides a kind of SDH terminal device and the method in wherein transmitting official telephone business, SDH end End equipment can the SDH terminal device to existing computer room be further improved, guarantee the situation constant in equipment other configurations Under, it realizes transmission of the official telephone business in SDH recurrent network, using newly-increased official telephone service access board, realizes The call of staff between computer room.Machine frame formula SDH terminal device is particularly suitable in the embodiment of the present invention.

A kind of SDH terminal device, comprising: official telephone service access board, main group road board, standby group road board and public affair Telephone service Control card.Wherein, standby group road board and official telephone service access board are to choose to install board, i.e., for one SDH terminal device may only include official telephone Service control board and main group road board.Below to include transmission official telephone Illustrate SDH end for above-mentioned all types board (but not being related to the board for the other business transmission of SDH) involved in business End equipment concrete composition, is illustrated in fig. 1 shown below:

Wherein, official telephone service access board is provided with for official telephone business (including voice service and letter Enable business) telephony interface that outputs and inputs and one or more and predetermined position on official telephone Service control board The expense interface that connects one to one of expense interface；

Main group road board is provided with one or more ports SDH that data transmission is realized with external SDH network And opening of connecting one to one of the expense interface in one or more and predetermined position on official telephone Service control board Pin joint mouth；And each described port SDH is connected to the expense interface in this board predetermined position one by one, while also connecting one by one To the expense interface in standby group road board predetermined position；

Standby group road board is that the board mutually protected is constituted with main group road board, complete with the design of main group road board It is identical, it is provided with one or more and the port SDH of external SDH network realization data transmission and one or one The expense interface to connect one to one above with the expense interface in predetermined position on official telephone Service control board；And it is described every One port SDH is connected to the expense interface in this board predetermined position one by one, while it is pre- to be also connected to main group road board one by one Position the expense interface set；

For above-mentioned main group road board and standby group road board it should be understood that main group road board and the standby group Road board can only determine that one is work at present group road board according to the working condition of board；Main group road board and described standby Each expense interface in predetermined position only connects the port SDH on the board of group road；And each port SDH connects master simultaneously An expense interface on an expense interface and standby group road board on the board of group road；Such as shown in Fig. 1, main group road The port SDH 1 of board is correspondingly connected with the 3 of 1 and standby group road board expense interface of main group road board expense interface, main group road plate The port SDH 2 of card is correspondingly connected with main group road board expense interface 2 and standby group road board expense interface 4, standby group road board The port SDH 1 is correspondingly connected with the 3 of main group road board expense interface and the expense interface 1 of standby group road board, standby group road board The port SDH 2 is correspondingly connected with the expense interface 4 of main group road board and the expense interface 2 of standby group road board；For being connected to chain The SDH terminal device of network can determine the current network side port SDH according to the present SDH port being connected into SDH recurrent network Positioned at main group road board or standby group road board, and according to being main group road board or standby group road board is work at present group road Board can determine which expense interface is that effective expense of current crossedpath connects on the official telephone Service control board Mouthful；That is: the port SDH being connected into SDH recurrent network is the current network side port SDH, is located on the board of main group road but regardless of it Or standby group road board；And it is connect on the official telephone Service control board with the expense interface of work at present group road board Predetermined position expense interface be effective current crossedpath expense interface；Although main group road board and standby group as a result, The expense interface of road board can receive the official telephone business inputted by the current network side port SDH simultaneously, but institute Official telephone Service control board is stated still to be able to that one is selected to be forwarded.

Official telephone Service control board completes official telephone service access board, main group road board and standby group road board Between official telephone business mutual biography, be electrically connected with official telephone service access board, main group road board and standby group road board, Multiple expense interfaces in upper predetermined position are corresponded with the expense interface on each other board respectively, it may be assumed that are made a reservation for thereon The expense interface of position, which prewired can be set to, to be connect by overhead bus with the expense interface on each other board, and can Realize the interconnection of expense interface on other boards, as needed to realize data between the different expense interfaces of intersection Flexibly forwarding.

Illustrate a bit: in the SDH terminal device that the embodiment of the present invention is proposed, how is official telephone service access board Voice service and signaling traffic are encapsulated into the expense interface and SDH of in expense interface and main group road board, standby group road board Overhead extraction and insertion method between port can be realized using any mode in the prior art, the embodiment of the present invention It is not defined, each expense interface of meaning of the embodiment of the present invention and the connection of the port SDH or telephony interface include Above-mentioned data handling procedure is directly expressed as " connecting " to keep description more succinct；In addition, each above-mentioned board and public affairs The link information in place of business telephone service Control card is in official telephone Service control board side using the common skill in this field Mode known to art personnel is known.In order to more clearly describe how to realize other plates in above-mentioned official telephone Service control board The interconnection of expense interface on card, below by way of the official telephone industry for realizing 12 × 12 in official telephone Service control board Business intersects, and is illustratively described as follows for granularity of the official telephone repeat in work according to 4 byte signalling paths:

It according to 12 × 4 byte signalling paths is respectively main group road board, standby in the official telephone Service control board Group's road board and official telephone service access board assignment overhead interface, the result specifically distributed are referred to shown in Fig. 1, public affair Expense interface 1- expense interface 4 on telephone service Control card is used for the expense interface pair of official telephone service access board It should connect to form signalling path, expense interface 5- expense interface 8 is used to be correspondingly connected with to be formed to the expense interface of main group road board Signalling path and expense interface 9- expense interface 12 are used to be correspondingly connected with that form signaling logical to the expense interface of standby group road board Road, i.e. official telephone service access board, main group road board and standby group road board respectively account for 4 line signaling channels, during realization, Each board can be corresponded to by the slot position actually occupied obtains distributed signalling path (that is, expense interface).Wherein, Optionally, main group road board and standby group road board can occupy fixed slot position；And official telephone service access board occupies slot position It can change, but main group road board, standby group road board and the predetermined slot position of official telephone Service control board must not be occupied, Thus networking is carried out convenient for the basis using group road board as networking.Further, if main group road board, standby group road board or The installation of person's official telephone Service control board is in place, so that it may obtain respective expense interface and different boards automatically according to slot position Connection relationship between expense interface is simultaneously saved in the official telephone Service control board.

In the official telephone Service control board, according to different scene needs, wherein different interconnections can To form different crossedpaths, for example, when main group road, board is in the case where official telephone service access board is not in place When work at present group road board, the crossedpath of the carry out information transmitting formed in official telephone Service control board can be such as figure Shown in 2；When it is work at present group road board that standby group road board, which is work at present group road board, official telephone Service control board The crossedpath that middle formation carries out information transmitting can be as shown in Figure 3；In the case where official telephone service access board is in place, When main group road board is work at present group road board, the carry out information exchange that is formed in official telephone Service control board Crossedpath can be as shown in Figure 4；When standby group road board is work at present group road board, in official telephone Service control board The crossedpath of the carry out information exchange of middle formation can be as shown in Figure 5.Other crossedpaths can need class according to scene Like generation.

Refering to what is shown in Fig. 6, will be described in detail a kind of above-mentioned SDH terminal device below transmits public affair in SDH recurrent network The method of telephone service, which comprises

Step 100: official telephone Service control board record belonging to it is in place with official telephone business in SDH terminal device The link information in place of the board of Control card electrical connection.

Optionally, when board information included in the unknown affiliated SDH terminal device of official telephone Service control board, Step 100 includes:

Step 1001: official telephone Service control board judges whether main group road board is in place, if not in place, does not belong to In the range that the embodiment of the present invention is discussed, this will not be repeated here, if in place, recording the connection in place in place of main group road board Information connects the location information of the expense interface of main group road board, then executes on record official telephone Service control board Step 1002；

Step 1002: official telephone Service control board judges whether standby group road board is in place, if not in place, main group Road board is directly confirmed as work at present group road board, directly execution step 1003；If in place, standby group road board is recorded Link information in place in place connects the position of the expense interface of standby group road board on record official telephone Service control board Information, and work at present group road board is determined according to the current state of main group road board and standby group road board, then execute step Rapid 1003；

In this step, determine that work at present group road board can according to the current state of main group road board and standby group road board To be: when main group road board is normal condition, determining that main group road board is work at present group road board；And work as main group road board When for the road abnormality Er Beiqun board being normal condition, determines that standby group road board is work at present group road board, certainly may be used By be according to it is other it is scheduled in a manner of determine；

Step 1003: official telephone Service control board judges whether official telephone service access board is in place, if not In place, then illustrate that this SDH terminal device cannot be directly as a correspondent of official telephone business, but it can be used as public affairs The intermediate node of business telephone service transmission uses；If in place, show that this SDH terminal device can directly carry out official telephone business The input or output of (including voice service and signaling traffic) record public affair electricity that is, as a correspondent of official telephone Call business access board is stuck in the link information in place of position, i.e. record official telephone Service control board expense interface connected to it Location information.

Optionally, when board information included in SDH terminal device affiliated known to official telephone Service control board, Above-mentioned steps 1002 and step 1003 be it is optional execute step, and when standby group road board be possible to can be in place when, then need to hold Row step 1002；When standby group road board there is no fear of in place, then do not need to execute step 1002；When official telephone service access When board is possible in place, then step 1003 is needed to be implemented；When official telephone service access board there is no fear of in place, then It does not need to execute step 1003.

1001-1003 can record affiliated SDH terminal in official telephone Service control board through the above steps as a result, All board information of equipment.As follows to the supplementary explanation of above-mentioned steps: above-mentioned step 1001,1002,1003 is example Property, official telephone Service control board determines that the link information in place of each board has no the stringent sequence that executes, as long as Official telephone Service control board is able to record the main group road board of the SDH terminal device, standby group road board and public affair The current link information in place of telephone service access board records each board expense interface position information connected to it , and whether each board can be realized by any mode in the prior art in place, and such as: official telephone business Control card is according to periodically obtaining each board link information in place by slot position inspection；Or official telephone Service control board Receive official telephone service access board it is in place after the signal in place that sends automatically.

Include: by the board being electrically connected with official telephone Service control board in place determined by step 100

Main group road board；

Alternatively, main group road board and standby group road board；

Alternatively, main group road board and official telephone service access board；

Alternatively, main group road board, standby group road board and official telephone service access board.

Step 101: official telephone Service control board is according to the in place and official telephone Service control board recorded The link information in place of the board of electrical connection determines the current crossedpath of official telephone business transmitting；It is specific:

When official telephone service access board is not present, the current crossedpath of official telephone business transmitting includes: public affairs It is engaged in inputting the port SDH (for example, the port SDH of the main group road board in Fig. 1 with current network side on telephone service Control card 1) expense of the expense interface connection of connected work at present group road board be interfaced on official telephone Service control board with Current network side exports the port SDH (for example, port SDH 2 of the main group road board in Fig. 1) connected work at present group road board Expense interface connection expense interface between crossedpath；

When there are official telephone service access board, the current crossedpath of official telephone business transmitting includes: (1) public affairs The expense connecting on business telephone service Control card with the expense interface of official telephone service access board is interfaced to official telephone The crossedpath between expense interface being connect on Service control board with expense interface A；Wherein, expense interface A be with it is current Network side exports the expense interface of the connected work at present group road board in the port SDH；Or (2) official telephone Service control board It is upper to be interfaced on official telephone Service control board and official telephone service access board conduct with the expense interface B expense connecting Crossedpath between the expense interface of the expense interface connection of output；Wherein, expense interface B is to input with current network side The expense interface of the connected work at present group road board in the port SDH.

Herein current network side input the port SDH or current network side output the port SDH can be it is preset, It is also possible to according to state of the current network adjustment, being likely located on the board of main group road may also be located on standby group road board, herein All be not construed as limiting, work at present group road board be the main group road board according to determined by working condition or standby group road board it One.

Step 102: when official telephone Service control board receives official telephone business, official telephone Service control plate Official telephone business is forwarded by card according to current crossedpath.

In this step, it is (1) by official telephone business that official telephone Service control board, which receives official telephone business, Access the official telephone business of the expense interface input of board；And (2) are defeated by the expense interface of work at present group road board The official telephone business entered can be specifically by public affairs to determine according to the location information for the expense interface for receiving official telephone business The expense interface input of business telephony access card or the expense interface for passing through work at present group road board input.For above two The repeating process of situation is as follows:

(1) when official telephone Service control board receives official telephone business are as follows: by official telephone service access board The input of expense interface official telephone business when, official telephone Service control board is by official telephone business from official telephone industry The expense interface connecting on business Control card with official telephone service access board is forwarded to be connect with the expense interface A expense connecting Mouthful；

When the expense interface for the work at present group road board being connected with the current network side output port SDH is to from public affairs When the official telephone business of business telephone service Control card, work at present group road board is by official telephone business by work at present group The expense interface of road board connecting with the current network side output port SDH is forwarded to the current network side output port SDH, by working as The preceding network side output port SDH is sent to network side；

Wherein, work at present group road board by official telephone business by work at present group road board and current network The expense interface of the side output port SDH connection is forwarded to the current network side output port SDH

When work at present group road, board is main group road board and the current network side output port SDH is main group road board When the port SDH, official telephone business is sent directly to the end output SDH of main group road board by the expense interface of main group road board Mouthful；

When work at present group road, board is standby group road board and the current network side output port SDH is standby group road board When the port SDH, official telephone business is sent directly to the end output SDH of standby group road board by the expense interface of standby group road board Mouthful；

When work at present group road, board is standby group road board but the current network side output port SDH is main group road board When the port SDH, the defeated of main group road connected to it board is sent by the expense interface of standby group road board by official telephone business The port SDH out；

When work at present group road, board is main group road board but the current network side output port SDH is standby group road board When the port SDH, the defeated of standby group road board connected to it is sent by the expense interface of main group road board by official telephone business The port SDH out.

(2) when official telephone Service control board receives official telephone business are as follows: pass through work at present group road board When the official telephone business of expense interface input,

If there is official telephone service access board, then official telephone Service control board by official telephone business from The expense interface of the expense interface connection of work at present group road board is forwarded to official telephone service access board as output Expense interface connection expense interface；

When the expense interface of official telephone service access board is to from the official telephone Service control board When official telephone business, whether the official telephone business that the official telephone service access board judgement receives is local needs The official telephone business of output, if it is, the official telephone business to be forwarded to the telephony interface of this board, by this board Telephony interface output；If it is not, the expense interface by the official telephone business by this board as output is forwarded to public affair Telephone service Control card is forwarded to according to current crossedpath by official telephone Service control board and is connect with expense interface A Expense interface, work at present group road board by official telephone business by with the expense that connect of the current network side output port SDH Interface is forwarded to the current network side output port SDH, is sent to network side by the current network side output port SDH.

If there is no official telephone service access board, then official telephone business is opened from what expense interface B was connect Pin joint mouth is forwarded to the expense interface connecting with expense interface A；

When the work at present group road board expense interface being connected with the current network side output port SDH is to from public affair When the official telephone business of telephone service Control card, work at present group road board is forwarded official telephone business by expense interface The port SDH is exported to current network side, network side is sent to by the current network side output port SDH.

Wherein, official telephone service access board, which judges whether it is, locally needs the official telephone business exported to include:

Include the information of specific recipient in official telephone business, is determined whether according to the information of the recipient for this Ground receives, this process can be determined using any way known to those of ordinary skill in the art, not repeated herein；Or Person,

Do not include the information of specific recipient in official telephone business, may be to initiate official telephone service request The request initiated not for particular call side of a side, be also considered as at this time this SDH terminal device for call recipient without It is further continued for forwarding to network side, the fastest response can be obtained when guaranteeing call request.

Wherein, official telephone business is forwarded to the output of current network side by expense interface by work at present group road board The port SDH includes:

Method for carrying out the transmission of official telephone business in above-mentioned SDH terminal device, it should be added that:

(1) in place in the affiliated SDH terminal device recorded in the official telephone Service control board and public affair Telephone service Control card electrical connection board link information in place in the state change for knowing each board (whether Whether position needs masterslave switchover etc.) it is updated；

(2) official telephone is saturating to be judged in the official telephone Service control board for the transmission of official telephone business Cross transfer is just carried out when passing enabled, is otherwise forbidden；

(3) the official telephone Service control board described in can judge whether it is when receiving data according to Data Identification Official telephone business, but more preferably, can will be from specific expense interface (referred to: with main group road board, standby group road plate Card and the corresponding expense interface of official telephone service access board) data judging that receives is official telephone business.

The SDH terminal device and official telephone that the embodiment of the present invention is proposed are introduced below with more specific application scenarios Business is in transmission method wherein.

(1) communication link protection scene one (point-to-point, without standby group road board)

Referring to Fig. 7, in above-mentioned application scenarios, SDH terminal device 1 and SDH terminal device 2 are that the embodiment of the present invention is mentioned Two SDH terminal devices out, each SDH terminal device include: that official telephone Service control board, official telephone business connect Enter board and main group road board, and the port SDH 2 of SDH terminal device 1 and the port SDH 1 of SDH terminal device 2 pass through optical fiber Interconnection；

After SDH terminal device 1 and SDH terminal device 2 start, belonging to respective official telephone Service control board determination The following information of SDH terminal device:

(i) official telephone service access board is in place and record is opened with what official telephone service access board was connect accordingly The location information of pin joint mouth；

(ii) main group road board is in place and records the location information for the expense interface connecting accordingly with main group road board；

The official telephone Service control board of two SDH terminal devices is respectively according to the expense of this board determined above The different board location informations that interface is connected determine the current crossedpath for the transmitting of official telephone business.

When needing to carry out the transmitting of official telephone business between two SDH terminal devices (with SDH terminal device 1 to SDH Terminal device 2 initiates to illustrate for public telephone service request), official telephone Service control board determines that present SDH terminal is set It is standby to allow to execute following steps when transparent transmission:

When SDH terminal device 1 needs to initiate public affair service request, the official telephone service access plate of SDH terminal device 1 Then the official telephone business (including voice service and signaling traffic) that the telephony interface of card receives is sealed it by predetermined format Fill and be sent to the expense interface of official telephone service access board；Official telephone Service control board is from corresponding expense thereon The official telephone business is transmitted to main group to official telephone business, according to the local current crossedpath stored by interface The expense interface of road board；Then by the port output SDH (i.e. the port the SDH 2) output of main group road board to network side；

When the main group road board input port SDH (i.e. the port SDH 1) of SDH terminal device 2 receives the number from network side According to rear, the expense interface of main group road board is passed it to, official telephone Service control board is from corresponding expense interface To data and after judging the reception data for official telephone business datum, handed over according to the local current crossedpath stored Fork is transmitted to the expense interface connecting with official telephone service access board, finally that its is defeated by official telephone service access board Out.

This completes the official telephone business transmitting from SDH terminal device 1 to SDH terminal device 2.

(2) (point-to-point, the road You Beiqun board, the current network side port SDH are main group road board to communication link protection scene two The port SDH)

Referring to Fig. 8, in above-mentioned application scenarios, SDH terminal device 1 and SDH terminal device 2 are that the embodiment of the present invention is mentioned Two SDH terminal devices out, each SDH terminal device include: that official telephone Service control board, official telephone business connect Enter board, main group road board and standby group road board, and the port SDH 2 of the main group road board of SDH terminal device 1 and SDH terminal The port SDH 1 of the main group road board of equipment 2 passes through optical fiber interconnections；

(ii) main group road board is in place and records this plate expense interface position information connecting accordingly with main group road board；

(iii) standby group road board is in place and records this plate expense interface position letter connecting accordingly with standby group road board Breath；

The official telephone Service control board of two SDH terminal devices is respectively according to the expense of this board determined above The location information for the different boards that interface is connected and current work group road board, which determine, can be used for official telephone business biography The current crossedpath passed, illustrates a bit: can determine certain according to the working condition of main group road board and standby group road board herein The path that one board carries out data transmission between work at present group road board, with work at present group road board is effectively to work as Preceding crossedpath.

When SDH terminal device 1 needs to initiate public affair service request, the official telephone service access plate of SDH terminal device 1 The telephony interface of card receives official telephone business (including voice service and signaling traffic), then encapsulates it by predetermined format And it is sent to the expense interface of this board；Official telephone Service control board is electric from corresponding expense interface thereon to public affair The official telephone business is transmitted to opening for work at present group road board according to the local current crossedpath stored by call business Pin joint mouth；Then the port output SDH (the i.e. end SDH of main group road board is transmitted to by the expense interface of work at present group road board 2) mouth, is exported by the port output SDH of main group road board to network side；Specifically, it is connect by the expense of work at present group road board The port output SDH that oral instructions are sent to main group road board may is that if work at present group road board is main group road board, public affair Telephone service is directly sent to the port output SDH of main group road board by the expense interface of main group road board, if work at present Group's road board is standby group road board, then official telephone business is sent to main group connected to it by the expense interface of standby group road board The port output SDH of road board；And work at present group road board can be by official telephone Service control board according to main group road board One is determined with the current state of standby group road board.

When the main group road board input port SDH (i.e. the port SDH 1) of SDH terminal device 2 receives the number from network side According to rear, it is transmitted to the expense interface of main group road board and standby group road board simultaneously, official telephone Service control board is from working as Board corresponding expense interface in preceding work group road is to data and after judging the reception data for official telephone business, according to this The current crossedpath that ground is stored is intersected the expense interface for being transmitted to and connecting with official telephone service access board, by public affairs Business telephone service access board is finally output it.

In this example, although main group road board and standby group road board are existed simultaneously, for a SDH terminal device For, the external port SDH connected to the network simultaneously has not been changed, and realizes external network side by the cross-over configuration that inside is realized The protection of the port SDH, and even if as work at present group road board due to protecting between main group road board and standby group road board It protects and changes, it is also to operate between the plate inside equipment that this, which is switched, and business switching time is again smaller than 50 millis when switching Second (ms) will not generate any influence to ongoing official telephone business.

(3) communication link protection scene three (the standby group road board of nothing, and the not set official telephone service access board of intermediate node)

Referring to Fig. 9, in above-mentioned application scenarios, SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3 are these Three SDH terminal devices that inventive embodiments are proposed, SDH terminal device 1 and SDH terminal device 3 include: official telephone business Control card, official telephone service access board and main group road board, and SDH terminal device 2 includes: official telephone business control Making sheet card and main group road board, but do not include public affair service access board；SDH terminal device 1, SDH terminal device 2 and SDH are whole End equipment 3 is linked in sequence by the respective port SDH by optical fiber；

After the starting of SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3, respective official telephone business control Making sheet card determines the following information of affiliated SDH terminal device:

(i) main group road board is in place and records the location information for the expense interface connecting accordingly with main group road board；

And the also determining affiliated SDH terminal of official telephone Service control board of SDH terminal device 1 and SDH terminal device 3 The following information of equipment:

(ii) official telephone service access board is in place and records and to connect accordingly with official telephone service access board Expense interface position information；

The official telephone Service control board of each SDH terminal device connects according to the expense of this board determined above respectively The different board location informations that mouth is connected determine the current crossedpath for the transmitting of official telephone business.

When needing to carry out the transmitting of official telephone business between SDH terminal device 1 and SDH terminal device 3 (with SDH end End equipment 1 is initiated to illustrate for public telephone service request to SDH terminal device 3), the determination of official telephone Service control board is worked as Preceding SDH terminal device executes following steps after allowing transparent transmission:

When SDH terminal device 1 needs to initiate public affair service request, the official telephone service access plate of SDH terminal device 1 The telephony interface of card receives official telephone business (including voice service and signaling traffic), then encapsulates it by predetermined format And it is sent to the expense interface of this board；Official telephone Service control board is electric from corresponding expense interface thereon to public affair Call business connects the expense that the official telephone business is transmitted to main group road board according to the local current crossedpath stored Mouthful；Then by the port output SDH (i.e. the port the SDH 2) output of main group road board to network side；

When the port input SDH (i.e. the port SDH 1) of the main group road board of SDH terminal device 2 is received from network side After data, the expense interface of main group road board is passed it to, official telephone Service control board connects from corresponding expense interface After receiving data and judging the reception data for official telephone business datum, according to the local current crossedpath stored by its Intersection is transmitted to back the expense interface connecting with the port output SDH (i.e. the port SDH 2) of main group road board, by exporting the port SDH It exports to network side；

When the port input SDH (i.e. the port SDH 1) of the main group road board of SDH terminal device 3 is received from network side After data, the expense interface of main group road board is passed it to, official telephone Service control board connects from corresponding expense interface After receiving data and judging the reception data for official telephone business datum, according to the local current crossedpath stored by its Intersection is transmitted to the expense interface connecting with official telephone service access board, by official telephone service access board finally by it Output.

This completes the official telephone business transmitting from SDH terminal device 1 to SDH terminal device 3.

In this Sample Scenario, the transmission of official telephone business cross-node in SDH recurrent network is realized, and non-call is double The intermediate node of side can be not provided with official telephone service access board.And what is remarked additionally is a bit: actually in group In network process, if be not aware that multiple SDH terminal devices for being connect with its chain which there are official telephone service access plates When blocking, and needing to be conversed with any SDH terminal device in whole network, such mode can guarantee a SDH terminal After equipment initiates call request, that SDH terminal device energy for containing official telephone service access board for being most recently connected with it This request is enough received, and forms talk business between the two.

(4) communication link protection scene four (without standby group road board, but intermediate node is provided with official telephone service access board)

Referring to Figure 10, in above-mentioned application scenarios, SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3 are these Three SDH terminal devices that inventive embodiments are proposed include: that official telephone Service control board, official telephone business connect Enter board and main group road board；SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3 pass through the respective port SDH It is linked in sequence by optical fiber；

(ii) official telephone service access board is in place and records and to connect accordingly with official telephone service access board The location information of expense interface；

The official telephone Service control board of each SDH terminal device opening according to this board determined above respectively The different board location informations that pin joint mouth is connected determine the current crossedpath for the transmitting of official telephone business.

When the port input SDH (i.e. the port SDH 1) of the main group road board of SDH terminal device 2 is received from network side After data, the expense interface of main group road board is passed it to, official telephone Service control board connects from corresponding expense interface After receiving data, is intersected according to the local current crossedpath stored and be transmitted to and official telephone service access board company The expense interface connect, official telephone service access board judges the official telephone business inputted by expense interface and non-local at this time After the official telephone business for needing to export, official telephone Service control board, official telephone industry are recycled to by local expense interface Business Control card is intersected the port output SDH being transmitted to main group road board according to the local current crossedpath stored The expense interface of (i.e. the port SDH 2) connection, is exported by the port SDH to network side；

When the port input SDH (i.e. the port SDH 1) of the main group road board of SDH terminal device 3 is received from network side After data, the expense interface of main group road board is passed it to, official telephone Service control board connects from corresponding expense interface After receiving data and judging the reception data for official telephone business datum, according to the local current crossedpath stored by its Intersection is transmitted to the expense interface connecting with official telephone service access board, by official telephone service access board judging Reception business is to output it after locally needing the official telephone business exported.

This completes the official telephone business transmitting from SDH1 terminal device to SDH3 terminal device.

For above-mentioned Sample Scenario, the transmission of official telephone business cross-node in SDH recurrent network is realized, and is had clear Recipient.

(5) communication link protection scene five (is provided with standby group road board and official telephone service access board, current network side The port SDH is the port SDH of main group road board)

Referring to Figure 11, in above-mentioned application scenarios, SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3 are these Three SDH terminal devices that inventive embodiments are proposed include: that official telephone Service control board, official telephone business connect Enter board, main group road board and standby group road board；SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3 pass through each From the port SDH be linked in sequence by optical fiber；

(iii) standby group road board is in place and records the location information for the expense interface connecting accordingly with standby group road board；

The official telephone Service control board of three SDH terminal devices is respectively according to the expense of this board determined above The different board location informations and current work group road board that interface is connected, which determine, can be used for the transmitting of official telephone business Current crossedpath, illustrate a bit: can be determined herein according to the working condition of main group road board and standby group road board a certain The path that a board carries out data transmission between work at present group road board, with work at present group road board is effective current Crossedpath.

When SDH terminal device 1 needs to initiate public affair service request, the official telephone service access plate of SDH terminal device 1 The telephony interface of card receives official telephone business (including voice service and signaling traffic), then encapsulates it by predetermined format And it is sent to the expense interface of this board；Official telephone Service control board is electric from corresponding expense interface thereon to public affair The official telephone business is transmitted to opening for work at present group road board according to the local current crossedpath stored by call business Pin joint mouth；Then the port output SDH (the i.e. end SDH of main group road board is transmitted to by the expense interface of work at present group road board 2) mouth, is exported by exporting the port SDH to network side；Specifically, main group is transmitted to by the expense interface of work at present group road board The port output SDH of road board may is that if work at present group road board is main group road board, and official telephone business is direct The port output SDH of main group road board is sent to by the expense interface of main group road board, if work at present group road board is standby Group road board, then official telephone business is sent to the output of main group road connected to it board by the expense interface of standby group road board The port SDH；And work at present group road board can be by official telephone Service control board according to main group road board and standby group road board Current state determine one.

When the main group road board input port SDH (i.e. the port SDH 1) of SDH terminal device 2 receives the number from network side According to rear, the expense interface of work at present group road board is passed it to, official telephone Service control board connects from corresponding expense After mouth receives data, is intersected according to the local current crossedpath stored and be transmitted to and official telephone service access plate Block the expense interface of connection, official telephone service access board judges that the official telephone business inputted by expense interface is not at this time After the official telephone business for locally needing to export, official telephone Service control board, public affair electricity are recycled to by local expense interface Call business Control card is intersected according to the local current crossedpath stored is transmitted to opening for work at present group road board Pin joint mouth, and it is forwarded to by it port output SDH (i.e. the port SDH 2) of main group road board, it is exported by the port SDH to net Network side；

When the main group road board input port SDH (i.e. the port SDH 1) of SDH terminal device 3 receives the number from network side According to rear, it is transmitted to the expense interface of main group road board and standby group road board simultaneously, official telephone Service control board is from working as Board corresponding expense interface in preceding work group road is to data and after judging the reception data for official telephone business, according to this The current crossedpath that ground is stored is intersected the expense interface for being transmitted to and connecting with official telephone service access board, by public affairs Business telephone service access board, which is stuck in, judges institute's reception business to output it after locally needing the official telephone business exported.

Illustrate a bit: in this example, determination for work at present group road board and with the data transmission between it Mode is referring to description before, and details are not described herein again.

(6) communication link protection scene six (is provided with standby group road board, but the not set official telephone service access plate of intermediate node Card, and the current network side port SDH is the port SDH of standby group road board)

Referring to Figure 12, in above-mentioned application scenarios, SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3 are these Three SDH terminal devices that inventive embodiments are proposed, and SDH terminal device 1 and SDH terminal device 3 include: official telephone Service control board, official telephone service access board, main group road board and standby group road board；And SDH terminal device 2 wraps It includes: official telephone Service control board, main group road board and standby group road board, but do not include: official telephone service access plate Card；SDH terminal device 1, SDH terminal device 2 and SDH terminal device 3 are linked in sequence by the respective port SDH by optical fiber；

(ii) standby group road board is in place and records the location information for the expense interface connecting accordingly with standby group road board；

(iii) official telephone service access board is in place and record is accordingly opened with what official telephone service access board was connect The location information of pin joint mouth；

The official telephone Service control board of three SDH terminal devices is respectively according to the expense of this board determined above The location information for the different boards that interface is connected and current work group road board, which determine, can be used for official telephone business biography The current crossedpath passed, illustrates a bit: can determine certain according to the working condition of main group road board and standby group road board herein The path that one board carries out data transmission between work at present group road board, with work at present group road board is effectively to work as Preceding crossedpath.

When SDH terminal device 1 needs to initiate public affair service request, the official telephone service access plate of SDH terminal device 1 The telephony interface of card receives official telephone business (including voice service and signaling traffic), then encapsulates it by predetermined format And it is sent to the expense interface of this board；Official telephone Service control board is electric from corresponding expense interface thereon to public affair The official telephone business is transmitted to opening for work at present group road board according to the local current crossedpath stored by call business Pin joint mouth；Then the port output SDH (the i.e. end SDH of standby group road board is transmitted to by the expense interface of work at present group road board 2) mouth, is exported by exporting the port SDH to network side；Specifically, standby group is transmitted to by the expense interface of work at present group road board The port SDH of road board may is that official telephone business is directly by standby if work at present group road board is standby group road board The expense interface of group road board is sent to the port output SDH of standby group road board, if work at present group road board is main group road Board, then official telephone business is sent to the output SDH of standby group road board connected to it by the expense interface of main group road board Port；And work at present group road board can be by official telephone Service control board according to main group road board and working as group road board Preceding state determines one.

When the standby group road board input port SDH (i.e. the port SDH 1) of SDH terminal device 2 receives the number from network side According to rear, the expense interface of work at present group road board is passed it to, official telephone Service control board connects from corresponding expense After mouth receives data, the output being transmitted to standby group road board is intersected according to the local current crossedpath stored The expense interface of the work at present group road board of the port SDH connection, and the port output SDH for group road board is forwarded to by it (i.e. the port SDH 2) is exported by exporting the port SDH to network side；

When the standby group road board input port SDH (i.e. the port SDH 1) of SDH terminal device 3 receives the number from network side According to rear, it is transmitted to the expense interface of main group road board and standby group road board simultaneously, official telephone Service control board is from working as Board corresponding expense interface in preceding work group road is to data and after judging the reception data for official telephone business, according to this The current crossedpath that ground is stored is intersected the expense interface for being transmitted to and connecting with official telephone service access board, by public affairs Business telephone service access board, which is stuck in, judges institute's reception business to output it after locally needing the official telephone business exported.

The embodiment of the present invention has the advantage that

1, upgraded on the basis of existing equipment, call function can be realized, the original business configuration of equipment is not required to change；

2, recurrent network topology can be achieved；

3, device configuration can be reduced, ease for use is improved.

The embodiment of the present invention also proposed a kind of SDH terminal device, and the SDH terminal device includes executing the above method Official telephone Service control board and the board being electrically connected with official telephone Service control board；It is described with official telephone business The board of Control card electrical connection may include: main group road board；Or main group road board and standby group road board；Or main group road Board and official telephone service access board；Alternatively, main group road board, standby group road board and official telephone service access board, Each board transmits the method for official telephone business in above description in SDH chain net, and details are not described herein again.

Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.

Claims

1. a kind of method for transmitting official telephone business, which is characterized in that applied in synchronous digital system SDH recurrent network SDH terminal device；The described method includes:

Official telephone Service control board is arranged in the SDH terminal device and is electrically connected with official telephone Service control board Board；

It is in place in SDH terminal device belonging to official telephone Service control board record to be electrically connected with official telephone Service control board The link information in place of the board connect；

Official telephone Service control board is according to the board being electrically connected with official telephone Service control board in place recorded Link information in place determine official telephone business transmitting current crossedpath；

When official telephone Service control board receives official telephone business, official telephone Service control board is handed over according to current Official telephone business is forwarded by cross road diameter.

2. the method according to claim 1, wherein the official telephone Service control board is in the following manner Determination receives official telephone business:

Predetermined position expense interface on the official telephone Service control board and described in place with official telephone business control Predetermined position expense interface on the board of making sheet card electrical connection is electrically connected correspondingly；

It is determined when the official telephone Service control board is from the expense interface in predetermined position to business and receives public affair electricity Call business.

3. according to the method described in claim 2, it is characterized in that, the plate being electrically connected with official telephone Service control board Card are as follows: be provided with the main group road board of the network side input port SDH and the network side output port SDH；The current crossedpath Include:

On official telephone Service control board and on the main group road board that the network side input port SDH is connected on the board of main group road The expense of expense interface connection, which is interfaced on official telephone Service control board, exports the end SDH with network side on the board of main group road Crossedpath between the expense interface of expense interface connection on the connected main group road board of mouth.

4. according to the method described in claim 3, it is characterized in that, the official telephone Service control board intersects according to current The official telephone business is forwarded by path

Official telephone business is connect from the expense that the expense interface connected with the network side of the main group road board input port SDH is connect Mouth is forwarded to the expense interface that the expense interface connected with the network side of the main group road board output port SDH is connect；

The method also includes:

When the expense interface of main group road board is to the official telephone industry from the official telephone Service control board When business, the network side that official telephone business is forwarded to main group road board is exported into the port SDH, the network side by main group road board is defeated The port SDH is sent to network side out.

5. according to the method described in claim 2, it is characterized in that, the plate being electrically connected with official telephone Service control board Card are as follows: be provided with the main group road board of the network side input port SDH and the network side output port SDH, be provided with for public affair electricity The official telephone service access board for the telephony interface that call business is output and input；

The current crossedpath includes:

The expense interface being connect on official telephone Service control board with the expense interface of the official telephone service access board Opening for the main group road board that the port SDH is connected is exported with network side on the board of main group road on to official telephone Service control board Crossedpath between the expense interface of pin joint mouth connection；Or

The main group road board that the port SDH is connected is inputted with network side on the board of main group road on official telephone Service control board The expense of expense interface connection is interfaced on official telephone Service control board and the official telephone service access board conduct Crossedpath between the expense interface of the expense interface connection of output.

6. according to the method described in claim 5, it is characterized in that, the official telephone Service control board intersects according to current The official telephone business is forwarded by path

When the official telephone business that official telephone Service control board receives are as follows: by the expense of official telephone service access board Interface input official telephone business when, by official telephone business from official telephone Service control board with official telephone business The expense interface of the expense interface connection of access board is forwarded to the master being connected with the network side of the main group road board output port SDH The expense interface of the expense interface connection of group road board；Alternatively,

When the official telephone business that official telephone Service control board receives are as follows: inputted by the expense interface of main group road board Official telephone business when, by official telephone business from the expense interface being connect with the expense interface of main group road board be forwarded to The expense interface of the expense interface connection of official telephone service access board.

7. according to the method described in claim 6, it is characterized in that, the method also includes:

The official telephone business is forwarded to and main group road board from the expense interface connecting with official telephone service access board The connected main group road board in the network side output port SDH the connection of expense interface expense interface after, via main group road board Expense interface be transmitted to main group road board network side output the port SDH, by main group road board network side output the port SDH hair It send to network side；Or

The official telephone business is forwarded to and official telephone industry from the expense interface connecting with the expense interface of main group road board After the expense interface of the expense interface connection of business access board, the official telephone service access board is judged as that local needs are defeated When official telephone business out, the telephony interface that the official telephone business is forwarded to this board is exported；Otherwise, by the public affairs Business telephone service is forwarded to official telephone Service control board by the expense interface of this board as output.

8. according to the method described in claim 2, it is characterized in that, the plate being electrically connected with official telephone Service control board Card are as follows: be provided with the main group road board of the network side input port SDH and the network side output port SDH, be provided with network side input The standby group road board of the port SDH and the network side output port SDH, main group road board and the standby group road board constitute mutual The board of protection；

The method also includes:

The official telephone Service control board record board being electrically connected with official telephone Service control board in place After the link information of position, determine that one of main group road board and the standby group road board are work at present group road board；And really The port network side SDH on fixed main group road board or the port network side SDH on the standby group road board are current net The network side port SDH；

The current crossedpath includes:

Opening on the work at present group road board being connected on official telephone Service control board with the current network side input port SDH Pin joint mouth connection expense be interfaced on official telephone Service control board with current network side output the port SDH be connected it is current The crossedpath between expense interface that the expense interface to work on the board of group road connects.

9. according to the method described in claim 8, it is characterized in that,

The official telephone business is forwarded by the official telephone Service control board according to current crossedpath

When the official telephone business that official telephone Service control board receives are as follows: inputted by the expense interface of main group road board Official telephone business when, official telephone business is connect from the expense interface connected with the current network side input port SDH Expense interface is forwarded to the expense interface that the expense interface connected with the current network side output port SDH is connect；

The method also includes:

When the expense interface of work at present group road board is to the public affair from the official telephone Service control board When telephone service, official telephone business is forwarded to the current network side output port SDH by work at present group road board, by working as The preceding network side output port SDH is sent to network side.

10. according to the method described in claim 2, it is characterized in that, described be electrically connected with official telephone Service control board Board are as follows: be provided with that the main group road board of the network side input port SDH and the network side output port SDH, to be provided with network side defeated Enter the standby group road board of the port SDH and the network side output port SDH, be provided with the electricity output and input for official telephone business Talk about the official telephone service access board of interface；Wherein, main group road board and the standby group road board constitute mutually protection Board；

The method also includes:

The current crossedpath includes:

The expense interface being connect on official telephone Service control board with the expense interface of the official telephone service access board The crossedpath between expense interface being connect on to official telephone Service control board with expense interface A；Wherein, the expense Interface A is the expense interface that the work at present group road board that the port SDH is connected is exported with current network side；

Alternatively, being interfaced to official telephone Service control plate with the expense interface B expense connecting on official telephone Service control board The crossedpath between expense interface being connect with the official telephone service access board as the expense interface of output on card； Wherein, the expense interface B is the expense interface that the work at present group road board that the port SDH is connected is inputted with current network side.

11. according to the method described in claim 10, it is characterized in that,

When official telephone Service control board receives official telephone business are as follows: connect by the expense of official telephone service access board When the official telephone business of mouth input, official telephone business is connect from official telephone Service control board with official telephone business The expense interface for entering board connection is forwarded to the expense interface connecting with the expense interface A；Alternatively,

When official telephone Service control board receives official telephone business are as follows: pass through the expense interface of work at present group road board When the official telephone business of input, official telephone business is connect from the expense connecting with the expense interface of work at present group road board Mouth is forwarded to the expense interface connecting with official telephone service access board as the expense interface of output.

12. according to the method for claim 11, which is characterized in that the method also includes:

The official telephone business is forwarded to from the expense interface connecting with official telephone service access board and connects with the expense After the expense interface of mouth A connection, the current network side output end SDH is forwarded to via the expense interface of work at present group road board Mouthful, network side is sent to by the current network side output port SDH；Alternatively,

The official telephone business is forwarded to and public affair electricity from the expense interface connecting with work at present group road board expense interface After call business accesses expense interface of the board as the expense interface connection of output, the official telephone service access board judgement For locally need to export official telephone business when, by the official telephone business be forwarded to this board telephony interface export； Otherwise, the expense interface by the official telephone business by this board as output is forwarded to official telephone Service control plate Card.

13. according to method described in claim 9 or 12, which is characterized in that work at present group road board is electric by public affair Call business is forwarded to the current network side output port SDH

When work at present group road, board is main group road board and the current network side output port SDH is main group road board The port SDH when, the official telephone business is sent directly to main group road board by the expense interface of main group road board The port output SDH；

When work at present group road, board is standby group road board and the current network side output port SDH is standby group road board The port SDH when, the official telephone business is sent directly to the standby group road board by the expense interface of standby group road board The port output SDH；

When work at present group road, board is the standby group road board but the current network side output port SDH is the master When the port SDH of group's road board, send by the expense interface of standby group road board the official telephone business to connected to it The port output SDH of main group road board；

When work at present group road, board is main group road board but the current network side output port SDH is described standby When the port SDH of group's road board, send by the expense interface of main group road board the official telephone business to connected to it The port output SDH of standby group road board.

14. according to method described in claim 9 or 12, which is characterized in that the official telephone service access board judgement For the official telephone business for locally needing to export specifically: the reception photos and sending messages that the official telephone business includes are local letter Breath.

15. a kind of synchronous digital system SDH terminal device, which is characterized in that the SDH terminal device includes executing aforesaid right It is required that the official telephone Service control board of any one of 1-14 the method and being electrically connected with official telephone Service control board Board.