CN101583051A - Method for realizing group call, multi service router and page system - Google Patents
Method for realizing group call, multi service router and page system Download PDFInfo
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Abstract
The invention provides a method for realizing group call, a multi-service router (MSR) and a page system; wherein the method comprises the following steps: the MSR receives calling signaling sent by a plurality of telephone exchange page (PBX-Page) controllers directly or via special private branch exchanges (PBX), and allocates corresponding downlink time slots for each PBX-Page; the MSR receives calling signaling and voice signals sent by a phone and allocates uplink time slots for the voice signals, the allocated uplink time slots have the same number with the downlink time slots, and analog-to-digital conversion is carried out on the voice signals which are then copied to each uplink time slot; the voice signals of each uplink time slot are respectively exchanged to corresponding downlink time slots; analog-to-digital conversion is carried out on the voice signals of downlink time slots which are then sent to the PBX-Page controllers corresponding to the downlink time slots respectively or to the PBX connected with the PBX-Page controllers corresponding to the downlink time slots. The invention can improve the quality of voice signals in group call service of the page system.
Description
Technical field
The present invention relates to notify from a phone call technical field, particularly a kind of method that realizes grouping busy, multiservice router (MSR) and (Page) system of call.
Background technology
At present, the audio output port of Page system connects multiple loud speaker (Speaker) and Page controller, is mainly used in business premises, hospital and supermarket etc., realizes the broadcasting group call service.The Page controller mainly is divided into two big classes, and promptly telephone exchange is notified from a phone call (PBX-Page) controller and IP-Page controller.
Early stage Page system adopts the PBX-Page controller to carry out networking, and the private branch exchange (PBX) that terminal connects is called out special voice server by the PBX-Page controller, realizes simple networking.But the efficiency of transmission of this mode of unicast based on model of client is lower and can not satisfy the application requirements of real-time, thereby is not suitable for large-scale group call service.The Page system of current main-stream adopts the IP-Page controller to carry out networking, main IP-Page controller, central Ethernet switch and the sip server a plurality of equipment such as (SIP Server) disposed in the Page system.Referring to Fig. 1, Fig. 1 is the Page system configuration schematic diagram of available technology adopting IP-Page controller networking.The IP-Page controller can be understood as a small-sized voice gateway equipment of supporting Session Initiation Protocol.For grouping busy voice flow transmission,, need each IP-Page controller and Ethernet switch to support multicast to transmit for fear of for too much the taking of the network bandwidth from source of sound to a plurality of Speaker.Each IP-Page controller need add a multicast group to the Ethernet switch application, carry out as IGMP agreement by standard, Ethernet switch is periodically inquired about with craft personal and is concerned, as IP address among Fig. 1 is 10.0.0.2,10.0.0.3 and the IP-page controller of 10.0.0.5 adds a multicast group G (correspondence is grouied busy number 100), when source of sound phone (Phone) 1 dialing 100, will make a call by the IP-Page controller of SIP Server in all groups, called IP-Page controller response, behind the call setup, the speech of follow-up phone 1 will become the VOIP message by IP-page controller in the LAN arrival group, decoding reverts to pcm stream (need copy to a plurality of Speaker passages) to IP-page controller internal processor through DSP with the VOIP message, changes into analogue voice signal by inner CODEC circuit then and drives a plurality of Speaker.
By above-mentioned flow process as can be seen, there is following defective in the Page system of existing employing IP-Page controller networking:
---＞pcm stream---＞dsp code---＞IP/MAC frame encapsulation---＞IP multicast routing forwarding---＞IP/MAC frame decapsulation---＞DSP decoding---＞pcm stream---＞analog signal that in network, the processing path of analog voice signal is: analog signal; Whole process need has increased line delay and has introduced the shake factor through the forwarding of DSP encoding and decoding, IP message encapsulation decapsulation processing and central Ethernet switch; As seen, the Page system of existing employing IP-Page controller networking causes quality of speech signal to descend owing to complex disposal process when realizing grouping busy easily.
Summary of the invention
The embodiment of the invention proposes a kind of method of grouping busy of realizing, can improve the quality of voice signal in the group call service of Page system.
The embodiment of the invention also proposes a kind of MSR and Page system, can improve the quality of voice signal in the group call service of Page system.
The technical scheme of the embodiment of the invention is achieved in that
A kind of method of grouping busy of realizing, this method is applied to comprise the system of MSR, PBX-Page controller, PBX and phone, and wherein, the PBX-Page controller directly links to each other with MSR or links to each other with MSR by PBX, and phone directly links to each other with MSR, and this method comprises:
The call signaling that MSR receives the direct transmission of a plurality of PBX-Page controllers or sends by PBX is that each PBX-Page controller distributes corresponding descending time slot;
MSR receives call signaling and the voice signal that phone sends, and for described voice signal distributes ascending time slot, the ascending time slot that is distributed is identical with the number of descending time slot, and voice signal is carried out analog-to-digital conversion and copies to each ascending time slot; The voice signal of each ascending time slot is exchanged to corresponding descending time slot respectively; The voice signal of descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion, perhaps, the voice signal of descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively, and PBX is sent to the voice signal that receives respectively the PBX-Page controller of this descending time slot correspondence after digital-to-analogue conversion.
A kind of MSR, be applied to comprise the system of MSR, PBX-Page controller, PBX and phone, wherein, the PBX-Page controller directly links to each other with MSR or links to each other with MSR by PBX, phone directly links to each other with MSR, and this MSR comprises: group busy access module, CPU module, TDM Switching Module and FXS module; Wherein,
Group busy access module, be used to receive the call signaling that the PBX-Page controller directly sends or send by PBX, request CPU module is that described PBX-Page controller distributes corresponding descending time slot; Also be used to receive the voice signal of each descending time slot that the TDM Switching Module sends; The voice signal of described each descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion, perhaps, the voice signal of described each descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively;
The CPU module is used for the request of grouping busy access module according to described, is that each PBX-Page controller distributes corresponding descending time slot; According to the request of FXS module, the voice signal that receives for the FXS module distributes ascending time slot, and the ascending time slot that is distributed is identical with the number of descending time slot, and indication FXS module is carried out the voice signal that receives analog-to-digital conversion and copied to each ascending time slot; Also be used to control the TDM module voice signal of each ascending time slot is exchanged to each descending time slot respectively;
The FXS module is used to receive the call signaling that phone sends, and request CPU module is that the voice signal of described phone distributes ascending time slot; Receive the voice signal that phone sends, described voice signal is carried out analog-to-digital conversion and copies to each ascending time slot, the voice signal of described each ascending time slot is sent to the TDM Switching Module according to the indication of CPU module;
The TDM Switching Module is used for the indication according to the CPU module, and the voice signal of described each ascending time slot is exchanged to corresponding descending time slot respectively, the voice signal of descending time slot is sent to grouies busy access module.
A kind of Page system comprises: MSR, phone, PBX and a plurality of PBX-Page controller; Wherein,
The PBX-Page controller is used for directly or by PBX sending call signaling to MSR;
Phone is used for sending call signaling and voice signal to MSR;
MSR is used to receive that a plurality of PBX-Page controllers directly send or by the call signaling that PBX sends, be that each PBX-Page controller distributes corresponding descending time slot; Receive call signaling and voice signal that phone sends, for described voice signal distributes ascending time slot, the ascending time slot that is distributed is identical with the number of descending time slot, and voice signal is carried out analog-to-digital conversion and copies to each ascending time slot; The voice signal of each ascending time slot is exchanged to corresponding descending time slot respectively; The voice signal of descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion, perhaps, the voice signal of descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively;
PBX is used for the voice signal that receives is sent to respectively the PBX-Page controller of this descending time slot correspondence after digital-to-analogue conversion.
As seen, method, MSR and Page system that the realization that the present invention proposes is grouied busy, based on MSR design of Platform Page system, by MSR is PBX-Page controller allocation of downlink time slot, receive call signaling and voice signal that phone sends, after voice signal copied to a plurality of ascending time slots, voice signal is exchanged at described descending time slot, and be sent to the PBX-Page controller.The group call service that the technical scheme that proposes by the present invention realizes, owing to avoided in the prior art twice DSP encoding and decoding, the IP message of PCM voice signal being encapsulated the forwarding of decapsulation processing and central Ethernet switch, make simple to the processing procedure of voice signal, reduce the risk that line delay and shake factor occur, thereby can improve the quality of voice signal.
And the Page system that the present invention proposes adopts the PBX-Page controller to carry out networking, and does not need to use expensive IP-Page controller; Support the Ethernet switch of multicast protocol and high QOS mechanism to exchange with the needs that MSR substitutes in the original system, these are changed and have all saved networking cost.In addition, the Page system that the present invention proposes can make full use of enterprise's existing telephone line resource, is convenient to network management and safeguards.
Description of drawings
Fig. 1 is the Page system configuration schematic diagram of available technology adopting IP-Page controller networking;
Fig. 2 is the structural representation of Page system embodiment of the present invention;
The method embodiment flow chart that Fig. 3 is grouied busy for the present invention's realization;
Fig. 4 is the schematic diagram of embodiment of the invention allocation of downlink time slot;
Fig. 5 distributes the schematic diagram of ascending time slot for the embodiment of the invention;
Fig. 6 is the schematic diagram of the embodiment of the invention to a plurality of ascending time slot reproduction speech signals;
Fig. 7 a is the TDM exchanged form schematic diagram when comprising single time row bus;
Fig. 7 b is the TDM exchanged form schematic diagram when comprising a plurality of times row bus;
Fig. 8 is the schematic diagram of the embodiment of the invention to a plurality of time slot group reproduction speech signals.
Embodiment
At present, multiservice router (MSR) is a kind of new generation network product of releasing towards industry branch and large and medium-sized enterprise specially, and multiple business such as VoIP voice communication can be provided for the enterprise customer; Present MSR generally supports digital voice trunking interface (VE1), telephone user interface (FXS) and analog voice trunk interface multiple speech interface types such as (FXO).And in the Page system, the speech interface type that the PBX-Page controller uses is VE1, FXO, and the speech interface type that phone uses is FXS.As seen, MSR has just in time satisfied the access demand of PBX-Page controller and phone in the Page system.Therefore, the present invention can adopt MSR to realize the Page system.
For adapting to the Page system that the present invention proposes, MSR need improve in the system, comprises that the function to existing FXS module strengthens, and increases the TDM Switching Module.Wherein, the FXS module after the increased functionality can copy to a plurality of ascending time slots with the voice signal from phone after analog-to-digital conversion; MSR is built-in TDM Switching Module, voice signal after can duplicating the FXS module exchanges, voice signal after the exchange enters VE1 module or high density FXO module, by the VE1 module voice signal directly is sent to PBX again, by PBX voice signal is carried out being sent to the PBX-Page controller after the digital-to-analogue conversion, or voice signal is carried out being sent to the PBX-Page controller after the digital-to-analogue conversion, thereby realize VE1 module or high density FXO module are connected the group call service of PBX-Page controller by high density FXO module.In MSR, the function class of VE1 module and high density FXO module seemingly can be referred to as and group busy access module.
Below lifting specific embodiment describes in detail:
The Page system embodiment:
Referring to Fig. 2, Fig. 2 is the structural representation of Page system embodiment of the present invention, and this system comprises: MSR, phone, PBX and a plurality of PBX-Page controller.In system embodiment shown in Figure 2:
30 PBX-Page controllers link to each other with VE1 module among the MSR by PBX, are that each the PBX-Page controller that links to each other with the VE1 module distributes fixing dialling the number, and dialling the number of distributing in the present embodiment is respectively 110～139;
24 PBX-Page controllers directly link to each other with FXO module among the MSR, are that each the PBX-Page controller that links to each other with the FXO module distributes fixing dialling the number, and dialling the number of distributing in the present embodiment is respectively 210～233;
Each PBX-Page controller is hung a plurality of Speaker down, and the number of grouping busy of all Speaker is 100;
Phone links to each other with FXS module among the MSR, and dialling the number of phone of configuration is 200, and the hot key number is 100.
Wherein, dialling the number of phone carries out using when existing VoIP business is with other business in the prior art for it;
Among the present invention, Speaker's grouies busy that number is identical in the hot key number of phone and the system.In the prior art, in order to realize the group call service of phone to Speaker, the IP-Page controller that IP-Page controller and the Speaker that phone connected connected adds a multicast group, phone is keyed in the group number of multicast group, and Ethernet switch can exchange to the Speaker that the IP-Page controller in the multicast group is connected with the voice messaging of phone according to the group number of this multicast group; In the present invention, owing to no longer adopt the mechanism of grouping busy with the realization of multicast group in the prior art, so the hot key number that phone is set grouies busy that with Speaker's number is identical, key in hot key number 100 when phone and go forward side by side after the lang sound calls out, MSR can realize that this phone is to grouping busy in the system that number is the group call service of 100 Speaker.
The flow direction of voice signal is in the system: phone sends analog voice signal to the FXS of MSR module; The FXS module is converted to audio digital signals with analog voice signal, and audio digital signals is copied to a plurality of ascending time slots and is sent to the TDM module; The TDM module exchanges the voice signal that receives, and the voice signal after the exchange is sent to VE1 module or high density FXO module by pre-assigned descending time slot; After the VE1 module receives voice signal, directly voice signal is sent to PBX, PBX carries out digital-to-analogue conversion and is sent to the PBX-Page controller voice signal, voice signal is sent to down the Speaker that hangs by the PBX-Page controller again; Perhaps, after high density FXO module receives voice signal, voice signal is carried out digital-to-analogue conversion and is sent to the PBX-Page controller, voice signal is sent to down the Speaker that hangs by the PBX-Page controller again.By this process, phone is hung grouping busy of Speaker down to each PBX-Page controller in the realization system.
In the said system, the PBX-Page controller is used for directly or by PBX sending call signaling to MSR;
Phone is used for sending call signaling and voice signal to MSR;
MSR is used to receive that a plurality of PBX-Page controllers directly send or by the call signaling that PBX sends, be that each PBX-Page controller distributes corresponding descending time slot; Receive call signaling and voice signal that phone sends, for described voice signal distributes ascending time slot, the ascending time slot that is distributed is identical with the number of descending time slot, and voice signal is carried out analog-to-digital conversion and copies to each ascending time slot; The voice signal of each ascending time slot is exchanged to each descending time slot respectively, the voice signal of each descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion; Perhaps, the voice signal of each descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively;
PBX is used for the voice signal that receives is sent to respectively the PBX-Page controller of this descending time slot correspondence after digital-to-analogue conversion.
In the said system, the PBX-Page controller send call signaling concrete mode can for: dial the number according to pre-assigned, adopt dtmf signal to send call signaling to MSR; With pre-assigned dialling the number is that 110 PBX-Page controller is an example, behind this controller electrifying startup, 110 sends dtmf signal by built-in dial module according to dialling the number, and initiates the calling of setting up link;
Phone send call signaling concrete mode can for: according to pre-assigned hot key number, adopt dtmf signal to send call signaling to MSR, wherein the group number of extension Speaker is identical down for hot key number and PBX-Page controller; With pre-assigned hot key number is that 100 phone is an example, and this phone sends dtmf signal according to hot key number 100, initiates the calling of setting up link.
For realizing the function of the Page system that the present invention proposes, the present invention also proposes a kind of MSR, and there is certain difference in existing MSR in this MSR and the prior art, below introduction in detail:
MSR embodiment:
Still be example with Fig. 2, the MSR that the embodiment of the invention proposes comprises: CPU module, TDM Switching Module, VE1 module, high density FXO module and FXS module.There are 2 class buses among the MSR, i.e. control bus and data/address bus, wherein, the CPU module links to each other with TDM Switching Module, VE1 module, high density FXO module and FXS module respectively by control bus (pci bus), and these modules are controlled; VE1 module, high density FXO module and FXS module are connected with the TDM Switching Module by data/address bus (in the present embodiment be that example describe with the 8MHW bus, also can adopt the data/address bus of other types such as 2M HW bus, 16M HW bus or 32M HW bus) respectively.
Described in preceding system, VE1 module among the MSR and high density FXO module can be referred to as grouies busy access module, and wherein, the VE1 module is connected with the PBX-Page controller by PBX, and high density FXO module directly is connected with the PBX-Page controller.Group busy access module, be used to receive the call signaling that the PBX-Page controller directly sends or send by PBX, request CPU module is that described PBX-Page controller distributes corresponding descending time slot; Also be used to receive each descending time slot that the TDM Switching Module sends voice signal; The voice signal of each descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion, perhaps, the voice signal of described each descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively;
CPU module among the MSR can be used for the request of grouping busy access module according to described, is that each PBX-Page controller distributes corresponding descending time slot; According to the request of FXS module, the voice signal that receives for the FXS module distributes ascending time slot, and the ascending time slot that is distributed is identical with the number of descending time slot, and indication FXS module is carried out the voice signal that receives analog-to-digital conversion and copied to each ascending time slot; Also be used to control the TDM module voice signal of each ascending time slot is exchanged to each descending time slot respectively;
FXS module among the MSR can be used to receive the call signaling that phone sends, and request CPU module is that the voice signal of described phone distributes ascending time slot; Receive the voice signal that phone sends, voice signal is carried out analog-to-digital conversion and copies to each ascending time slot, the voice signal of described each ascending time slot is sent to the TDM Switching Module according to the indication of CPU module;
TDM Switching Module among the MSR is used for the indication according to the CPU module, and the voice signal of each ascending time slot is exchanged to each descending time slot respectively, the voice signal of each descending time slot is sent to grouies busy access module.
Among the above-mentioned MSR, the mode of FXS module reproduction speech signal can for: voice signal is latched,, periodically this voice signal is copied to each ascending time slot at the rising edge of master clock (PCLK) according to PCM timing sequence generating header signal.
The Page system and the MSR that adopt the present invention to propose, the present invention also propose a kind of method of grouping busy of realizing, referring to Fig. 3, and the method embodiment flow chart that Fig. 3 is grouied busy for the present invention's realization, this embodiment is applied to system shown in Figure 1.This method embodiment comprises:
Step 301:PBX-Page controller sends call signaling to MSR.
For the group call service of phone in the realization system to extension Speaker under the PBX-Page controller, the PBX-Page controller at first sends call signaling, and Request System is set up link.Be that 110 PBX-Page controller is an example to dial the number, behind this PBX-Page controller electrifying startup, send dtmf signal (dialling the number 110), initiate the calling of setting up link by PBX according to pre-assigned by built-in dial module.
In the present embodiment, dialling the number is that 110～139 PBX-Page controller all sends call signaling via PBX to the VE1 of MSR module by dtmf signal, and Request System is set up link.Dial the number is that the number of grouping busy of the Speaker that hangs down of 110～139 PBX-Page controller is 100.
The VE1 module of step 302:MSR detects and handles R2 signaling by built-in DSP to the dtmf dialing sound, request CPU module is a PBX-Page controller allocation of downlink time slot;
For the allocation of downlink time slot, the CPU module at first needs to add up current has set up link for how many PBX-Page controller requests, could distribute a descending time slot for each PBX-Page controller afterwards.In the present embodiment, the total N of the PBX-Page controller of link is set up in current electrifying startup of CPU module records among the MSR and initiation, and current total N=30 PBX-Page controller electrifying startup is so need to distribute 30 descending time slots altogether.It is pointed out that in the present embodiment that because the timeslot number of 8M HW bus is 128, so the span of N is 1～128, that is to say, to multipotency be 128 PBX-Page controller allocation of downlink time slots simultaneously.
CPU module among the MSR is distributed 30 descending time slots for the PBX-Page controller, referring to Fig. 4, Fig. 4 is the schematic diagram of embodiment of the invention allocation of downlink time slot, in the present embodiment, is 30 PBX-Page controllers DTS0～DTS29 time slots of allocation of downlink 8M HW bus DHW0 respectively.
Step 303: dialling the number is 200 receiver off-book, according to pre-assigned hot key number 100, sends call signaling by dtmf signal to the FXS of MSR module; The built-in DSP of FXS module handles dtmf signal, detects to comprise hot key number 100 in this dtmf signal, identifies the hot key number and is 100 phone request and initiate grouping busy in the system that number is the group call service of 100 Speaker; FXS module request CPU module is that the group call service of this phone distributes ascending time slot;
The CPU module of step 304:MSR is determined descending time slot according to the hot key number in the call signaling, distributes corresponding ascending time slot for this phone afterwards; For satisfying the group call service of 30 PBX-Page controllers being hung Speaker (number of grouping busy of Speaker is 100) down, the CPU module is distributed 30 time slots going up row bus UHW0, i.e. UTS0～UTS29 time slot for this phone.Referring to Fig. 5, Fig. 5 distributes the schematic diagram of ascending time slot for the embodiment of the invention.
Step 303 and step 304 have been finished the hot key link setup of phone, and execution in step 305 afterwards.
Step 305: phone sends analog voice signal to the FXS of MSR module, and the FXS module is carried out analog-to-digital conversion to the analog voice signal that receives, and voice signal takies the time slot of UHW0 after compression, as the UTS0 time slot.
Step 306:FXS module is according to the indication of CPU module, according to PCM timing sequence generating header signal, then the voice signal after the analog-to-digital conversion is copied to each ascending time slot that distributes in the step 304, promptly the FXS module is duplicated the voice signal in the UTS0 time slot of UHW0 bus to UTS1～UTS29 time slot.The mode of duplicating is: with the 8bit data latching of UTS0, periodically copy to other N-1 distributed time slot at the PLCK rising edge clock; Referring to Fig. 6, Fig. 6 is the schematic diagram of the embodiment of the invention to a plurality of ascending time slot reproduction speech signals.In the present embodiment, specifically can finish duplicating of voice signal by the PCM logic module in the FXS module.
The TDM Switching Module of step 307:MSR is according to the indication of CPU module, the voice signal of each ascending time slot and 30 descending time slots (being DTS0～DTS29 time slot of DHW0) that distribute in step 302 are exchanged, and the voice signal after the exchange enters the VE1 module.Afterwards, the VE1 module is sent to voice signal the PBX that the PBX-Page controller is connected again, and PBX is sent to the PBX-Page controller with the voice signal that receives after digital-to-analogue conversion.
The present embodiment setting is operated in the speed of UHW and the equal pattern of speed of DHW, rate selection PCLK=8.192Mb/s (8M HW).The PCM voice signal is operated in unidirectional mode UHW0---＞DHW0, the TDM Switching Module is under the control of CPU module, voice signal is exchanged respectively at UTS0～UTS29 time slot of last row bus UHW0 and DTS0～DTS29 time slot of following row bus DHW0, and concrete corresponding relation is as follows:
UTS0——＞DTS0；
UTS1——＞DTS1；
......
UTS29——＞DTS29；
Finish the transmission of voice signal by above-mentioned exchanged form from phone to the PBX-Page controller.
In the foregoing description, what data/address bus was selected for use is 8M HW bus, also can select the HW bus of other speed in the present invention; When selecting the HW bus of 8M HW bus and other speed for use, the concrete parameter of the exchange capacity of the TDM Switching Module among the MSR sees the following form 1, as: when selecting 8M HW bus for use, MSR can support the exchanges data of each 32 HW bus of up-downgoing, and 32 VE1 modules and/or high density FXO module just can be arranged at most among the MSR.
| UHW, DHW speed | UHW * DHW bar number | UHW, DHW operating position |
| 2M | 32×32 | UHW(i)、DHW(i)＝0～31 |
| 8M | 32×32 | UHW(i)、DHW(i)＝0～31 |
| 16M | 16×16 | UHW(i)、DHW(i)＝0～15 |
| 32M | 8×8 | UHW(i)、DHW(i)＝0～7 |
Table 1
Step 308: after grouping busy end, the FXS module detects the phone on-hook, and the FXS module reports the CPU module to remove the distribution of 30 time slots of the UHW0 of phone correspondence, waits for next time and calls out; 30 time slots of the DHW0 that distributes for the PBX-Page controller can be used as the special line resource and remain to and continue next time to use, until shutdown of PBX-Page controller or outage.
The foregoing description is to realize that the grouping busy of PBX-Page controller to hanging under the VE1 module is that example is introduced, the present invention also can realize hanging grouping busy of PBX-Page controller under the high density FXO module, the difference of the two only is, high density FXO resume module call signaling be analogue signalling, and VE1 resume module call signaling is R2 signaling; The PBX-Page controller that high density FXO module connects mostly is 24 most, and the PBX-Page controller that the VE1 module connects mostly is 30 most; High density FXO module carries out being sent to the PBX-Page controller after the digital-to-analogue conversion to the voice signal that receives, and the VE1 module directly is sent to PBX with the voice signal that receives, and is undertaken being sent to the PBX-Page controller after the digital-to-analogue conversion by PBX.
In addition, 2 8M HW buses (being UHW0 and DHW0) that speed is identical have only been taken in the above embodiments, if need mixed insertion VE1 module and high density FXO module among the MSR, perhaps comprise several VE1 modules/high density FXO module, then can take under a plurality of descending 8M HW buses and hang the PBX-Page controller; In this case, because the up 8M HW bus that the FXS module takies has only one, in order to satisfy grouping busy to a plurality of PBX-Page controllers, require to be not more than an assignable number of time slot 128 of 8M HW bus for the number of PBX-Page controller allocation of downlink time slot simultaneously, the mode of specific implementation is: the CPU module is determined the number of the PBX-Page controller of transmission call signaling, judge the number of the ascending time slot whether this number can distribute for the voice signal of phone greater than MSR, if be not more than, then CPU is the descending time slot that each PBX-Page controller distributes a correspondence; If greater than, illustrating that then the PBX-Page controller that sends call signaling simultaneously is too much, MSR can't provide group call services for these PBX-Page controllers simultaneously.
Shown in Fig. 7 a and 7b, Fig. 7 a is the TDM exchanged form schematic diagram when comprising single down row bus, comprises the last row bus of a FXS module to the TDM Switching Module among the MSR, and TDM Switching Module is to the following row bus of VE1 module/high density FXO module;
Fig. 7 b is the TDM exchanged form schematic diagram when comprising a plurality of down row bus, comprises the last row bus of a FXS module to the TDM Switching Module among the MSR, and TDM Switching Module is to the following row bus of N VE1 module/high density FXO module; For down row bus DHW0, DHW1 ..., the summation of the descending time slot that distributes of DHWN should be less than 128, the mode of specific implementation is: the CPU module determine down row bus DHW1, DHW2 ..., in all PBX-Page controllers of connecting of DHWN, send the number of the PBX-Page controller of call signaling, judge the number (promptly 128) of the ascending time slot whether this number can distribute for the voice signal of phone greater than MSR, if be not more than, then CPU is the descending time slot that each PBX-Page controller distributes a correspondence; If greater than, illustrating that then the PBX-Page controller that sends call signaling simultaneously is too much, MSR can't provide group call services for these PBX-Page controllers simultaneously.
In addition, can be in the present embodiment according to grouping busy the needs a plurality of groups of grouping busy of division flexibly, in this case, in the foregoing description, the described loud speaker distribution group number of hanging down for each PBX-Page controller can for: the PBX-Page controller is divided into a plurality of groups of grouping busy, for each loud speaker of grouping busy that the PBX-Page controller in the group is hung down distributes identical group number, group busy the loud speaker that the PBX-Page controller in the group is hung down for difference and distribute different group number; Describedly be that phone distributes the hot key number, the hot key number identical with group number can for: for described phone distributes a plurality of hot key numbers, each hot key number is identical with group number corresponding with it respectively; Described MSR receives call signaling and the voice signal that phone sends, for voice signal distribute ascending time slot can for: MSR determines the descending time slot that corresponding group number with it has been distributed according to the hot key number that comprises in the described call signaling, is the ascending time slot that described phone distributes correspondence.In the system as shown in Figure 1, the PBX-Page controller of hanging under the VE1 module is divided into one and grouies busy group, and the number of grouping busy of all Speaker that hang down is 100 in this group, and 100 pairs of the hot key numbers of phone should be grouied busy group; The PBX-Page controller of hanging under the high density FXO module is divided into another and grouies busy group, and the number of grouping busy of all Speaker that hang down is 101 in this group, and 101 pairs of the hot key numbers of phone should be grouied busy group.After the built-in DSP of FXS module detects the dtmf dialing sound of different hot key numbers, the time slot group of row bus UHW0 on the request CPU module assignment; The CPU module is this hot key number assignment ascending time slot group, and wherein the number of ascending time slot equals the number of grouping busy PBX-Page controller in the group of this hot key number correspondence; Then, the built-in PCM logic module of FXS module copies to the hot key number time slot corresponding group that makes a call according to the configuration of CPU with the voice signal of the UTS0 time slot of bus UHW0, shown in 8, Fig. 8 is the schematic diagram of the embodiment of the invention to a plurality of time slot group reproduction speech signals, wherein:
Time slot group one comprises UTS0～UTS29, and the voice signal that copies to this time slot group is sent to the VE1 module after exchange, and the corresponding number of grouping busy is 100;
Time slot group two comprises UTS30～UTS53, and the voice signal that copies to this time slot group is sent to high density FXO module after exchange, and the corresponding number of grouping busy is 101.
In addition, in the aforementioned embodiment, last row bus is identical with the speed of following row bus.In other embodiments of the invention, last row bus also can be different with the speed of following row bus; When the up-downgoing Bus Speed not simultaneously, as long as the ascending time slot that satisfy to distribute is identical with the number of descending time slot, still can realize the purpose that the present invention is grouied busy.
As fully visible, the method that Page system, MSR and the realization that the embodiment of the invention proposes grouied busy can realize in the local area network (LAN) hanging the group call service of Speaker under a plurality of PBX-Page controllers based on the MSR platform.Wherein, the CPU module among the MSR can be each PBX-Page controller allocation of downlink time slot, after the FXS module receives the voice signal that phone sends, is that this voice signal distributes the ascending time slot identical with the descending time slot number; The FXS module copies to this voice signal in the ascending time slot of distribution according to the indication of CPU module; The also built-in TDM Switching Module of MSR, the voice signal after according to the indication of CPU module the FXS module being duplicated exchanges.Among the present invention, the duplication service of core and the reciprocal exchange of business are carried out by hardware cell (FXS module and TDM Switching Module) fully, do not need the participation of CPU module substantially, and this makes circuit switching bandwidth and QoS secure fully; In addition, the phone of hanging under the FXS module does not influence its normal voip phone communication that participates in this locality or spanning network and other business except can hot key dialing initiates to group busy, has embodied the advantage of MSR platform.
As seen, the present invention can realize the group call service of Page system simply and effectively, its advantage is mainly reflected in: utilize existing PBX and phone tradition VOIP method of calling to connect, the time delay of local large capacity I DM Switching Module is fixed, shake minimumly, so the transferring voice quality is apparently higher than existing IP-page networking mode; The scheme of grouping busy is very little for the occupancy of host CPU module, and the data service for MSR itself does not influence substantially; A MSR cooperates several voice plate cards to realize networking, need not other equipment and server, and configuration management is safeguarded simple efficient, with low cost; Capacity expansion and upgrading is simple, makes full use of existing PBX and is connected the PBX-Page controller with the telephone wire resource, is fit to intranet environment large-scale network-estabilishing.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (14)
1, a kind of method of grouping busy of realizing, this method is applied to comprise the system of multiservice router MSR, telephone exchange call PBX-Page controller, private branch exchange PBX and phone, wherein, the PBX-Page controller directly links to each other with MSR or links to each other with MSR by PBX, phone directly links to each other with MSR, it is characterized in that described method comprises:
The call signaling that MSR receives the direct transmission of a plurality of PBX-Page controllers or sends by PBX is that each PBX-Page controller distributes corresponding descending time slot;
MSR receives call signaling and the voice signal that phone sends, and for described voice signal distributes ascending time slot, the ascending time slot that is distributed is identical with the number of descending time slot, and voice signal is carried out analog-to-digital conversion and copies to each ascending time slot; The voice signal of each ascending time slot is exchanged to corresponding descending time slot respectively; The voice signal of descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion, perhaps, the voice signal of descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively, and PBX is sent to the voice signal that receives respectively the PBX-Page controller of this descending time slot correspondence after digital-to-analogue conversion.
2, method according to claim 1, it is characterized in that, described MSR further comprises before receiving PBX-Page controller transmission call signaling: be the loud speaker distribution group number that each PBX-Page controller is hung down, for described phone distributes the hot key number, described hot key number is identical with group number;
Comprise this hot key number in the call signaling that described phone sends;
Described MSR is that the voice signal of phone distributes the mode of ascending time slot to be: MSR determines descending time slot according to the group number of the hot key number correspondence in the described call signaling, for described phone distributes corresponding ascending time slot.
3, method according to claim 2, it is characterized in that, the described loud speaker distribution group number of hanging down for each PBX-Page controller is: described PBX-Page controller is divided into a plurality of groups of grouping busy, for each loud speaker of grouping busy that the PBX-Page controller in the group is hung down distributes identical group number, group busy the loud speaker that the PBX-Page controller in the group is hung down for difference and distribute different group number;
Described for phone distributes the hot key number, the hot key number is all mutually with group number: for described phone distributes a plurality of hot key numbers, each hot key number is identical with group number corresponding with it respectively;
Described MSR receives call signaling and the voice signal that phone sends, for voice signal distributes ascending time slot be: MSR determines the descending time slot that corresponding group number with it has been distributed according to the hot key number that comprises in the described call signaling, for described phone distributes corresponding ascending time slot.
4, method according to claim 1 is characterized in that, described MSR for each PBX-Page controller distributes the mode of corresponding descending time slot is:
Central processing unit CPU module among the MSR is determined the number of the PBX-Page controller of transmission call signaling, when described number was not more than the ascending time slot number that MSR can distribute for the voice signal of phone, described CPU be the descending time slot of a correspondence of each PBX-Page controller distribution.
5, method according to claim 1, it is characterized in that, the described mode that voice signal is copied to described ascending time slot is: the FXS module among the MSR latchs described voice signal, according to pulse code modulation PCM timing sequence generating header signal, periodically this voice signal is copied to described each ascending time slot at master clock PCLK rising edge.
6, method according to claim 1 is characterized in that, described voice signal with each ascending time slot exchanges to the step of corresponding descending time slot respectively and carried out by the time division multiplexing tdm Switching Module that sets in advance among the MSR.
7, a kind of MSR, be applied to comprise the system of MSR, PBX-Page controller, PBX and phone, wherein, the PBX-Page controller directly links to each other with MSR or links to each other with MSR by PBX, phone directly links to each other with MSR, it is characterized in that described MSR comprises: group busy access module, CPU module, TDM Switching Module and FXS module; Wherein,
The described access module of grouping busy is used to receive the call signaling that the PBX-Page controller directly sends or send by PBX, and request CPU module is that described PBX-Page controller distributes corresponding descending time slot; Also be used to receive the voice signal of each descending time slot that the TDM Switching Module sends; The voice signal of described each descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion, perhaps, the voice signal of described each descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively;
Described CPU module is used for the request of grouping busy access module according to described, is that each PBX-Page controller distributes corresponding descending time slot; According to the request of FXS module, the voice signal that receives for the FXS module distributes ascending time slot, and the ascending time slot that is distributed is identical with the number of descending time slot, and indication FXS module is carried out the voice signal that receives analog-to-digital conversion and copied to each ascending time slot; Also be used to control the TDM module voice signal of each ascending time slot is exchanged to each descending time slot respectively;
Described FXS module is used to receive the call signaling that phone sends, and request CPU module is that the voice signal of described phone distributes ascending time slot; Receive the voice signal that phone sends, described voice signal is carried out analog-to-digital conversion and copies to each ascending time slot, the voice signal of described each ascending time slot is sent to the TDM Switching Module according to the indication of CPU module;
Described TDM Switching Module is used for the indication according to the CPU module, and the voice signal of described each ascending time slot is exchanged to corresponding descending time slot respectively, the voice signal of descending time slot is sent to grouies busy access module.
8, MSR according to claim 7 is characterized in that, described grouping busy comprises VE1 module and/or high density FXO module in the access module,
When grouping busy that access module is the VE1 module, this VE1 module is connected with the PBX-Page controller by PBX; When grouping busy that access module is the FXO module, this FXO module directly is connected with the PBX-Page controller.
9, MSR according to claim 7, it is characterized in that, the voice signal that described FXS module sends phone copies to each ascending time slot and is: the FXS module latchs described voice signal, according to PCM timing sequence generating header signal, periodically this voice signal is copied to each ascending time slot at the rising edge of PCLK.
10, MSR according to claim 7, it is characterized in that, described CPU module is used for definite number that sends the PBX-Page controller of call signaling, when described number is not more than the ascending time slot number that MSR can distribute for the voice signal of phone, be the descending time slot that each PBX-Page controller distributes a correspondence.
11, a kind of call Page system is characterized in that described system comprises: MSR, phone, PBX and a plurality of PBX-Page controller; Wherein,
Described PBX-Page controller is used for directly or by PBX sending call signaling to MSR;
Described phone is used for sending call signaling and voice signal to MSR;
Described MSR is used to receive that a plurality of PBX-Page controllers directly send or by the call signaling that PBX sends, be that each PBX-Page controller distributes corresponding descending time slot; Receive call signaling and voice signal that phone sends, for described voice signal distributes ascending time slot, the ascending time slot that is distributed is identical with the number of descending time slot, and voice signal is carried out analog-to-digital conversion and copies to each ascending time slot; The voice signal of each ascending time slot is exchanged to corresponding descending time slot respectively; The voice signal of descending time slot is sent to the PBX-Page controller of this descending time slot correspondence respectively after digital-to-analogue conversion, perhaps, the voice signal of descending time slot is sent to the PBX that the PBX-Page controller of this descending time slot correspondence is connected respectively;
Described PBX is used for the voice signal that receives is sent to respectively the PBX-Page controller of this descending time slot correspondence after digital-to-analogue conversion.
12, system according to claim 11 is characterized in that, described system is the loud speaker distribution group number of hanging under each PBX-Page controller, and for described phone distributes the hot key number, described hot key number is identical with group number.
13, system according to claim 11, it is characterized in that, described MSR is used for definite number that sends the PBX-Page controller of call signaling, when described number is not more than the ascending time slot number that MSR can distribute for the voice signal of phone, be the descending time slot that each PBX-Page controller distributes a correspondence.
14, system according to claim 11 is characterized in that, described MSR is used for voice signal is latched, and according to PCM timing sequence generating header signal, periodically this voice signal is copied to described each ascending time slot at the PCLK rising edge.
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| CN116566536B (en) * | 2023-07-12 | 2023-10-03 | 厦门星纵物联科技有限公司 | Method for realizing simulated telephone call by router, router and storage medium |
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