CN100544456C - Call out the method for route in a kind of tandem system and the tandem system - Google Patents
Call out the method for route in a kind of tandem system and the tandem system Download PDFInfo
- Publication number
- CN100544456C CN100544456C CN200510105559.1A CN200510105559A CN100544456C CN 100544456 C CN100544456 C CN 100544456C CN 200510105559 A CN200510105559 A CN 200510105559A CN 100544456 C CN100544456 C CN 100544456C
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- China
- Prior art keywords
- tandem
- tandem exchange
- exchange
- downlink call
- interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1023—Media gateways
- H04L65/103—Media gateways in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
- H04L65/104—Signalling gateways in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
- H04M7/0075—Details of addressing, directories or routing tables
Abstract
The invention provides method and the tandem system of calling out route in a kind of tandem system, the core of its method and system is: the interface that the downlink call intercommunication is set between based on first tandem exchange of soft switch and second tandem exchange, connected second tandem exchange is transmitted with the downlink call of its reception by described interface in first tandem exchange, and by described second tandem exchange described downlink call is called out route.The present invention can provide at least two routes for downlink call, make between many downlink call routes and can realize functions such as route backup, load balancing, the interface of the downlink call intercommunication between the tandem exchange among the present invention can adopt the interface of SIP-T agreement, making between the tandem exchange of dissimilar or same type not to increase under extra physical equipment and the situation about being connected, and realizes route backup, the load balancing of downlink call; Thereby realized saving the realization cost and the maintenance cost of downlink call route backup, load balancing etc., improved the purpose of downlink call reliability.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to call out in a kind of tandem system and the tandem system method of route.
Background technology
Along with development of telecom technology, highly integrated because soft switch has big capacity, professional, control and characteristics such as carrying separates, making with the soft switch is that the NGN (next generation network) of core is applied in the communication network gradually.
Soft switch as the networking schematic diagram of tandem exchange as shown in Figure 1.
Among Fig. 1,, all breathe out by the A of tandem exchange for the up call of the A of end office (EO).Conversely, all are routed to the A of end office (EO) by the A of tandem exchange by the downlink call of tandem exchange.
Consider generally can adopt the biplane networking structure from load sharing and reliability aspect, concrete networking as shown in Figure 2.
Among Fig. 2, for the up call of the A of end office (EO), because the A of tandem exchange and B are mutually redundant two planes, so, two routes when breathing out, the A of end office (EO) are arranged, i.e. route A and route B, and route A inserts by the A of tandem exchange, and route B is by the B of tandem exchange access.
For downlink call, as downlink call, then has only a route, promptly with the reciprocal route of route A from the A of tandem exchange to the A of end office (EO) by tandem exchange.
Can find out obviously that from Fig. 2 the phenomenon of up call and downlink call asymmetry can appear in present this biplane networking structure, up call has the route stand-by protection, and downlink call does not then have the route stand-by protection.
When the networking mode that adopts traditional switch promptly not to be based on the switch of soft switch carries out networking, for realizing calling out route backup, need between A of tandem exchange and the B of tandem exchange, increase the E1 relaying, E1 be by ITU-T G.703, G704, G706 the definition communication interface, so not only need to increase extra networking and maintenance cost, and, do not make full use of the NGN network advantages yet.
Summary of the invention
The objective of the invention is to, method and the tandem system of calling out route in a kind of tandem system are provided,, do not increasing under the calling route implementing condition of cost, realized improving the purpose of downlink call reliability by intercommunication interface between the tandem exchange is set.
For achieving the above object, call out the method for route in a kind of tandem system provided by the invention, comprising:
A, the interface of downlink call intercommunication is set between based on first tandem exchange of soft switch and second tandem exchange;
B, first tandem exchange transmit connected second tandem exchange with the downlink call of its reception by described interface, and by described second tandem exchange described downlink call are called out route.
Two tandem exchanges based on soft switch are among the described step a: type is identical/and different tandem exchanges based on soft switch;
Described first tandem exchange and second tandem exchange be the tandem exchange or the tandem exchange of load balancing each other of route backup each other.Described intercommunication interface comprises: based on the interface of SIP-T agreement.
The downlink call that first tandem exchange receives among the described step b comprises: the downlink call that first tandem exchange receives by itself and the interface of the 3rd tandem exchange intercommunication, first tandem exchange are by the downlink call of downlink call inlet reception.
First tandem exchange specifically comprises the downlink call of its reception by the step that described interface transfers to second tandem exchange among the described step b:
First tandem exchange transfers to second tandem exchange with the downlink call of its reception by described interface according to the SIP-T protocol signaling.
Described step b specifically comprises:
First tandem exchange transfers to second tandem exchange with the downlink call of its reception interface by described intercommunication;
Second tandem exchange transfers to described downlink call the end office (EO) of ownership first tandem exchange by connected Tandem Gateway.
The present invention also provides a kind of tandem system, at least comprise: based on first tandem exchange of soft switch with based on second tandem exchange of soft switch, be provided with the interface of downlink call intercommunication between described first tandem exchange and second tandem exchange, first tandem exchange receives downlink call, and this downlink call transferred to connected second tandem exchange by described interface, by second tandem exchange described downlink call is called out route.
Described interface comprises: based on the interface of SIP-T agreement.
Described each tandem exchange based on soft switch is: the tandem exchange based on soft switch that type is identical or different.
Also comprise in the described tandem system: belong to the Tandem Gateway of tandem exchange, tandem exchange is connected with the Tandem Gateway of its ownership, and Tandem Gateway is connected with one or more end office (EO)s;
Second tandem exchange transfers to the Tandem Gateway of ownership with its downlink call that receives by described interface, by this Tandem Gateway this downlink call is routed to corresponding end office (EO).
Description by technique scheme as can be known, by the interface of downlink call intercommunication is set between different tandem exchanges, make the present invention provide at least two routes, make between many downlink call routes and can realize functions such as route backup, load balancing for downlink call; By adopting the interface of SIP-T agreement, making between the tandem exchange of dissimilar or same type not to increase under extra physical equipment and the situation about being connected, and realizes route backup, the load balancing of downlink call; Thereby, improve the purpose of downlink call reliability by realization cost and the maintenance cost that technical scheme provided by the invention has realized saving downlink call route backup, load balancing etc.
Description of drawings
Fig. 1 is the networking schematic diagram of soft switch as tandem exchange;
Fig. 2 is a biplane networking structure schematic diagram;
Fig. 3 is the networking schematic diagram of tandem system of the present invention.
Embodiment
The core of method of the present invention and tandem system is: the interface that the downlink call intercommunication is set between based on first tandem exchange of soft switch and second tandem exchange, connected second tandem exchange is transmitted with the downlink call of its reception by described interface in first tandem exchange, and by second tandem exchange described downlink call is called out route.
Below technical scheme provided by the invention is further described.
Be provided with the interface of downlink call intercommunication between two tandem exchanges of the present invention based on soft switch, the interface of the downlink call intercommunication here can be the interface based on SIP-T (Session Initiation Protocol forTelephones) agreement, like this, can carry out the transmission of downlink call by the SIP-T protocol signaling between two tandem exchanges.
Two tandem exchanges that are provided with the downlink call intercommunication interface can be mutually redundant tandem exchange, also can be the tandem exchange of load balancing each other.
Because the SIP-T agreement is a kind of standardization agreement that is widely used in intercommunication between the soft switch, so, utilize this interface not needing to increase under extra physical equipment and the situation about being connected, realize the downlink call transmission between the tandem exchange of dissimilar or same type.The tandem exchange that tandem exchange such as model are identical, model is different that type is identical, type is different.Certainly, the interface of downlink call intercommunication also can be other standardization agreement based on Signalling exchange between the soft switch between two tandem exchanges.
After between two tandem exchanges are as first tandem exchange and second tandem exchange, being provided with interface based on the SIP-T agreement, first tandem exchange can with its from world that downlink call inlet receives/domestic downlink call transfers to second tandem exchange by the interface of downlink call intercommunication.The go into station interface of above-mentioned downlink call inlet for calling out at first tandem exchange.
If first tandem exchange is main tandem exchange, second tandem exchange for being equipped with tandem exchange, then main tandem exchange is its world/domestic downlink call that receives from the downlink call inlet, and the interface by the downlink call intercommunication transfers to tandem exchange fully.
After second tandem exchange promptly is equipped with the interface of tandem exchange by the downlink call intercommunication and receives downlink call, can this downlink call be routed to the end office (EO) that belongs to first tandem exchange by Tandem Gateway direct-connected with it, thereby, the downlink call that receives for first tandem exchange provides a new route, has satisfied the demand of route backup.
If first tandem exchange and second tandem exchange be the tandem exchange of load balancing each other, then first tandem exchange passes through its world/domestic downlink call from the reception of downlink call inlet, transfer to second tandem exchange from the interface of downlink call intercommunication, after the interface of second tandem exchange by the downlink call intercommunication receives downlink call, can this downlink call be routed to the end office (EO) that belongs to first tandem exchange by Tandem Gateway direct-connected with it, load between first tandem exchange and its direct-connected Tandem Gateway is effectively alleviated, satisfied the demand of load balancing.
In the foregoing description process, the downlink call that first tandem exchange receives also can be its downlink call that receives from other tandem exchange by intercommunication interface, as the intercommunication interface of first tandem exchange by itself and the 3rd tandem exchange, receive the downlink call that the transmission of the 3rd tandem exchange comes, at this moment, first tandem exchange can transfer to second tandem exchange with the interface of its this downlink call by the downlink call intercommunication equally.
The present invention does not change the route processing procedure that is up to the up call of tandem exchange from end office (EO).
Tandem system provided by the invention as shown in Figure 3.
Among Fig. 3, tandem system of the present invention comprises: the A of tandem exchange, the B of tandem exchange, belong to the Tandem Gateway of the A of tandem exchange and belong to the Tandem Gateway of the B of tandem exchange.A of tandem exchange and the B of tandem exchange are the tandem exchange based on soft switch, and the type of A of tandem exchange and the B of tandem exchange can be identical, also can be inequality.
Be provided with the interface based on the SIP-T agreement between A of tandem exchange and the B of tandem exchange, A of tandem exchange and the B of tandem exchange carry out the transmission of downlink call by this interface according to the SIP-T agreement.
For the downlink call that goes downwards to end office (EO) from tandem exchange, there are two as the route from the A of tandem exchange to the A of end office (EO) among Fig. 3, be route A and route A ', route A for from the A of tandem exchange to the Tandem Gateway that belongs to the A of tandem exchange again to the A of end office (EO), route A ' for from the A of tandem exchange to the B of tandem exchange to the Tandem Gateway that belongs to the B of tandem exchange again to the A of end office (EO).Route A ' and the route A route that backups each other, also load balancing route each other.
Above-mentioned description to tandem system of the present invention is that example is described with two tandem exchanges, and tandem system also can comprise plural tandem exchange.When tandem system comprises a plurality of tandem exchange, between a plurality of tandem exchanges downlink call is realized that the process and the foregoing description of calling route are basic identical, be not described in detail at this.
Tandem system of the present invention makes the route of up call and downlink call all can realize route backup and load balancing, improved the reliability of downlink call, and, the present invention fully, has effectively utilized the physics networking of existing tandem system, not needing increases extra physical equipment and is connected, and has saved the realization cost and the maintenance cost of downlink call route backup, load balancing etc.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (10)
1, calls out the method for route in a kind of tandem system, it is characterized in that, be provided with the interface of downlink call intercommunication between based on first tandem exchange of soft switch and second tandem exchange based on soft switch; And described method comprises step:
Described second tandem exchange receives the downlink call that described first tandem exchange comes by described interface transmission;
The described downlink call that described second tandem exchange will receive transfers to the end office (EO) of described first tandem exchange of ownership by connected Tandem Gateway.
2, call out the method for route in a kind of tandem system as claimed in claim 1, it is characterized in that:
Describedly with second tandem exchange being based on soft switch based on first tandem exchange of soft switch: type is identical/different tandem exchanges based on soft switch;
Described first tandem exchange and second tandem exchange be the tandem exchange or the tandem exchange of load balancing each other of route backup each other.
3, call out the method for route in a kind of tandem system as claimed in claim 1, it is characterized in that described intercommunication interface comprises: based on the interface of SIP-T agreement.
4, call out the method for route in a kind of tandem system as claimed in claim 1, it is characterized in that, the downlink call that described first tandem exchange transfers to described second tandem exchange is the downlink call that described first tandem exchange receives.
5, call out the method for route in a kind of tandem system of stating as claim 4, it is characterized in that the downlink call that described first tandem exchange receives comprises: the downlink call that first tandem exchange receives by itself and the interface of the 3rd tandem exchange intercommunication, first tandem exchange are by the downlink call of downlink call inlet reception.
As calling out the method for route in claim 1,2,3, the 4 or 5 described a kind of tandem systems, it is characterized in that 6, described second tandem exchange receives described first tandem exchange and specifically comprises by the downlink call that described interface transmission comes:
Described second tandem exchange receives the downlink call that described first tandem exchange comes by described interface transmission according to the SIP-T protocol signaling.
7, a kind of tandem system, at least comprise based on first tandem exchange of soft switch with based on second tandem exchange of soft switch, it is characterized in that, be provided with the interface of downlink call intercommunication between described first tandem exchange and second tandem exchange, described first tandem exchange receives downlink call, and this downlink call transferred to connected second tandem exchange by described interface, the described downlink call that described second tandem exchange will receive transfers to the end office (EO) of described first tandem exchange of ownership by connected Tandem Gateway.
8, a kind of tandem system as claimed in claim 7 is characterized in that, described interface comprises: based on the interface of SIP-T agreement.
9, a kind of tandem system as claimed in claim 7 is characterized in that, described each tandem exchange based on soft switch is: the tandem exchange based on soft switch that type is identical or different.
10, as claim 7,8 or 9 described a kind of tandem systems, it is characterized in that described Tandem Gateway is connected with one or more end office (EO)s;
Described second tandem exchange transfers to the Tandem Gateway of ownership with its downlink call that receives by described interface, this downlink call is routed to the end office (EO) of described first tandem exchange of ownership by this Tandem Gateway.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510105559.1A CN100544456C (en) | 2005-09-27 | 2005-09-27 | Call out the method for route in a kind of tandem system and the tandem system |
| PCT/CN2006/001924 WO2007036119A1 (en) | 2005-09-27 | 2006-08-01 | A tandem system and a method for calling the route in the tandem system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510105559.1A CN100544456C (en) | 2005-09-27 | 2005-09-27 | Call out the method for route in a kind of tandem system and the tandem system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1878332A CN1878332A (en) | 2006-12-13 |
| CN100544456C true CN100544456C (en) | 2009-09-23 |
Family
ID=37510593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510105559.1A Expired - Fee Related CN100544456C (en) | 2005-09-27 | 2005-09-27 | Call out the method for route in a kind of tandem system and the tandem system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100544456C (en) |
| WO (1) | WO2007036119A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103581012A (en) * | 2013-10-21 | 2014-02-12 | 华为技术有限公司 | Data transmission method and router |
| CN106301713B (en) * | 2015-06-05 | 2020-01-21 | 中兴通讯股份有限公司 | Method, site equipment and system for realizing disaster recovery communication |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6982950B1 (en) * | 1998-12-22 | 2006-01-03 | Sprint Communications Company L.P. | System and method for connecting a call in a tandem architecture |
| US6816584B1 (en) * | 2000-09-11 | 2004-11-09 | Verizon Services Corp. | Routing a call through a telecommunications network |
| CN1627855A (en) * | 2003-12-10 | 2005-06-15 | 华为技术有限公司 | Route method of mobile long distance tandem center, and system |
-
2005
- 2005-09-27 CN CN200510105559.1A patent/CN100544456C/en not_active Expired - Fee Related
-
2006
- 2006-08-01 WO PCT/CN2006/001924 patent/WO2007036119A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN1878332A (en) | 2006-12-13 |
| WO2007036119A1 (en) | 2007-04-05 |
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Granted publication date: 20090923 Termination date: 20120927 |