CN1173527C - Connection method for time gap of multi-module bridging for program controlled exchanger - Google Patents
Connection method for time gap of multi-module bridging for program controlled exchanger Download PDFInfo
- Publication number
- CN1173527C CN1173527C CNB011052864A CN01105286A CN1173527C CN 1173527 C CN1173527 C CN 1173527C CN B011052864 A CNB011052864 A CN B011052864A CN 01105286 A CN01105286 A CN 01105286A CN 1173527 C CN1173527 C CN 1173527C
- Authority
- CN
- China
- Prior art keywords
- module
- time slot
- called
- bridge joint
- calling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention discloses a connection method for time gap of multi-module bridging in a program controlled exchanger, which has the steps that the positions of a calling module and a called module are determined, and then whether the two modules are arranged in the same module and whether a direct connection relay exists are respectively judged; if the two judgment are false, bridging time gap which can be connected with the calling module needs looking for step by step from the called module to modules at upper levels to finish connection. The route connection lookup method of the present invention can search quickly to finish connection in systematic application of module bridging, and has powerful function of error automatic healing when a system has accidents. The present invention can be used for upgrade in digital program controlled switching systems with various networking modes.
Description
Technical field
The present invention relates to field of telecommunications, specifically a kind of method that the speech channel of realization multimode continues in stored-program control exchange.
Background technology
Switch multimode in the past adopts star-like networking mode (as shown in Figure 1) mostly, intermodule (comprises local module-local module, local module-remote end module, remote end module-remote end module) conversation must be passed through the center module tandem, promptly for a calling subscriber and called subscriber not in the calling of same module, switch must be routed to center module to calling subscriber's speech channel and called subscriber's speech channel simultaneously, is responsible for both are continued by center module again.Such networking structure is simple, and intermodule speech channel connecting method is also single.Development along with switch technology, multistage tree group network structure (as shown in Figure 2) and net type networking structure just find broad application in switch, because this networking mode relative complex, and flexibility is big, and the call between two disparate modules can be adopted multiple route continuation method in theory.For adopting different route continuation methods in the full dispersion digital SPC exchange system that adopts multistage tree type or the networking of net type, its speed that continues has bigger difference.Operational efficiency and raising telephone connection speed in order to improve switch network press for a kind of connecting method fast and effectively and set up speech channel at any two intermodules of switch.
Summary of the invention
The objective of the invention is to, provide a kind of and in the full dispersion digital SPC exchange system of multistage tree type or the networking of net type, realize cross-module fast optimum method for searching route, finishing the calling speech channel continues, the mistake self-healing mechanism is provided in the scope of whole system simultaneously, after unexpected accident, can recovers automatically rapidly to guarantee system.
Connection method for time gap of multi-module bridging for program controlled exchanger of the present invention, implementation step is as follows,
The first step is located calling and called user place module;
1. determine the module position at calling and called user place, and in the module at calling and called user place, distribute the time slot that continues to give the calling and called user;
2. whether the time slot that continues of judging the calling and called user in same module then changes step in same module
3; As not in same module, second step of redirect then;
3. in module, finish caller and called users and continue process ends;
In second step, in the module at called subscriber place, seek the direct connection relaying whether have from called subscriber to calling subscriber, if having then by direct connection trunk connection bridge joint time slot, complete connection; If there is not the direct connection relaying then to change for the 3rd step;
In the 3rd step, continue and arrive the bridge joint time slot of higher level's module when the time slot of front module;
1. judge whether successfully to search out bridge joint time slot,, then change step 2 if seek successfully when father's module of front module; If seek failure, jump procedure 3;
2. the time slot that will work as front module is routed on the time slot of its higher level's module, changes for the 4th step over to;
3. judge whether current module is called module, if then change step 4; If not called module, then jump procedure 6;
4. remove the bridge joint time slot that has continued, discharge the calling and called call proceeding;
5. call failure finishes to continue flow process;
6. remove the bridge joint time slot that has continued, and send out message request release bridge joint time slot, return step 3 again,, discharge the call proceeding of calling and called, finish to continue flow process up to returning called module to adjacent block;
In the 4th step, seek bridge joint time slot, complete connection in the module in higher level's module of front module in the 3rd step according to the calling subscriber place;
1. judge the time slot in higher level's module, whether can obtain calling subscriber and called subscriber simultaneously, if could jump procedure 2; If can not obtain simultaneously, then return and carried out for second step;
2. calling and called user's bridge joint time slot continues in higher level's module;
3. the calling and called subscriber bridging time slot during protection has continued;
4. the bridge joint time slot continues successfully.
Connection method for time gap of multi-module bridging of the present invention has been realized quick cross-module optimum route querying, and intrasystem mistake self-healing can be provided in multimode tree group network structure and netted networking structure, guaranteed the reliable and stable running of system.
Description of drawings
Fig. 1 is star-like networking structure schematic diagram;
The multistage tree group network structural representation of Fig. 2;
Fig. 3 is a connection method for time gap of multi-module bridging flow chart of the present invention;
Fig. 4 is the switching network of multiple planes schematic diagram;
Fig. 5 is the present invention's main working state schematic representation of using in dual-machine hot backup system;
Fig. 6 is the present invention's standby working state schematic representation in dual-machine hot backup system;
Fig. 7 is the multimode switch of the present invention speech channel embodiment schematic diagram that continues;
Fig. 8 is continue a bridge joint route method for dismounting flow chart after finishing of the present invention;
Fig. 9 is the process chart of calling and called user in same module of the inventive method;
Process chart when Figure 10 has the direct connection relaying for the called and calling subscriber of the inventive method;
Figure 11 is the process chart when higher level's module of called module is sought the failure of bridge joint time slot.
Embodiment
Below in conjunction with drawings and Examples, further specify characteristics of the present invention, in the accompanying drawings:
Because simple in structure, the method that continues is also simple relatively in existing switching system for star-like networking diagram as shown in Figure 1; Though and Fig. 2 shown in tree group network structure networking mode complexity because it has very flexible characteristic, can satisfy the demand of all types of user simultaneously, just be widely used.The present invention also mainly relates to the multi-module bridging technology in multistage tree type or the networking of net type.
At multimode tree group network characteristics, connection method for time gap of multi-module bridging mainly solves key issue four:
1. route searches;
2. under the networking situation of various complexity, between calling and called, set up a speech path fast, and when calling out release, can tear the road rapidly open and discharge the interlock circuit resource;
3. reliable speech path protection when switching, MP is provided;
4. " sweeping away rubbish " function regularly is provided, guarantee that failure accident takes place beyond MP-MP Communication Block etc. after, made " hanging " but the intermodule traffic resource rapid release of switch.
For the solution of the present invention more clearly is described, at first introduce several substances:
In total system to intermodule relaying time slot speech channel carry out unified logical number (TLN-Time SlotLogical Number), the structure of TLN is as follows:
typedef?struct?tagTLN?{
BYTE ts; / * timeslot number */
WORD hw; The HW * of/* intermodule speech channel/
BYTE module; Module No. * in the/* multi-module structure/
}TLN，_FAR*LPTLN；
2. the time slot of adjacent two modules is called TWIN_TLN mutually.By calling the TWIN_TLN that can obtain a time slot with minor function
CM_GETTWINTLN(TLN)
3. multistage tree is as shown in the figure. and be called sibling module mutually between the module at the same level, higher level's module is called father's module of subordinate's module, and subordinate's module is called the submodule of higher level's module, can use the relaying direct connection between the sibling module;
4. can obtain the module No. that links to each other with this time slot by calling the CM_GETSPCMODULE function;
5. five-star module is Central Switching Module (SNM), and SNM has big switching network, can be divided into two classes according to its composition mode:
1) large capacity single plane switching network (as 32K, 64K, 128K), continuing of intermodule just can be finished in a plane, and be fairly simple;
2) switching network of multiple planes;
Switching network of multiple planes is to be combined into a switching network of multiple planes by a plurality of monoplanes switching network by certain mode, as shown in Figure 4, forms the 32K switching network with 6 8K monoplane switching networks (from I to VI), I, II, III, IV is used to insert local module (3#, 4#), add V, the VI module is used to insert remote end module (28#), bridging process passes through I for 3# to the calling between the 4#, II, III, continue and once get final product in the arbitrary plane among the VI; And 3# is to the calling of 28#, and bridging process will pass through I, II, and III, the arbitrary plane among the VI is routed to the V plane, is routed to 28# again.
For the SNM that adopts above two kinds structure, bridging process continues according to data configuration and intermodule Time Slot Occupancy situation automatic selection of optimal route.
Be the reliability that guarantees that bridge joint continues, need in the system of two-node cluster hot backup, adopt following bridge joint time slot protection mechanism.The operating state of main frame as shown in Figure 5, main when receiving the request connect message with state, the associated bridge time slot that continues, and the notice standby host protects this to continue; When receiving the request release message, remove the associated bridge time slot, and the notice standby host goes to protect this to continue; When receiving the master by switching messages, the stand-by state of moving into; After receiving the claimed connect message of standby host, all the bridge joint time slot that has continued notice standby hosts.
Operating state Fig. 6 of standby host receives when asking for protection connect message at stand-by state, record associated bridge time slot; When receiving request release guard message, remove associated bridge time slot record; When receiving the master by switching messages, the main state of using of moving into; After receiving active and standby machine communication recovery message, send out connect message claimed to main frame.
Because multimode switch practice in a bigger geographic range, is easier to be subjected to the interference of extraneous various factors, for the protection bridging process can recover operate as normal rapidly automatically after interference eliminated.Adopt intermodule time interval resource check and correction regularly, guaranteeing can rapid release when accident is disturbed the resource from suspending that causes.
Suppose to have modules A and B to link, the logic number of a certain voice channel time slot on the A module of direct connection relaying is TLN_A, and the logic number on the B module is TLN_B.Because the corresponding physical slot by time of TLN_A and TLN_B is same time slot, so TLN_A should be consistent in TLN_B state under normal circumstances.Work as A, when the communication disruption of B intermodule (or because of other extraneous factors) caused intermodule to discharge the failure of bridge joint time slot, TLN_A was inevitable inconsistent in the state of TLN_B.Bridging process is regularly checked the intermodule time slot state, when Discovery Status is inconsistent, the bridge joint time slot of release busy then, and remove in the bridge joint speech channel that links to each other.
Call out called subscriber B with calling subscriber A respectively below in conjunction with shown in Figure 7, calling subscriber C calls out called subscriber D, and calling subscriber A calls out called subscriber D the detailed process that bridge joint route of the present invention continues and removes is described.
As shown in flow chart 9, switch is determined caller and called place module according to the position and the called number analysis result of caller off-hook, is caller and calledly respectively looks for a time slot to be used for speech channel continuing in its place module respectively; Judge that more whether caller time slot (OPTLN_A) and called time slot (TPTLN_B) are at same module (relation of continuing is seen calling subscriber A and the called subscriber B among Fig. 7); If in their same modules then do not need bridging process to participate in cross-module speech channel to continue, directly can get up caller and called connection; If not in same module, then need bridging process to participate in continuing of cross-module speech channel, the flow process of bridge joint time slot is progressively sought in startup from called party to calling party, flow process is seen Figure 10, and switch at first has or not the direct connection relaying according to the called time slot of the office data configuration determination place module of local exchange to caller time slot place module; If (remote end module at calling subscriber A and called subscriber B place as shown in Figure 7) arranged then at direct connection time slot (TPBTLN_B) of the called module side application of direct connection relaying to the caller module; Again at a direct connection time slot (OPBTLN_A) of the caller module side application correspondence of direct connection relaying to called module; At last respectively the time slot (OPBTLN_A) of caller time slot (OPTLN_A) and direct connection relaying Calling Side, and the time slot of called time slot (TPTLN_B) and direct connection relaying callee side link to each other (TPBTLN_B); The bridge joint path continues and finishes (as shown in Figure 7);
If this module is not to the direct connection relaying (remote end module at calling subscriber C and called subscriber D place as shown in Figure 7) of caller module then apply for a time slot (TPBTLN_D) to father's module; Called time slot (TPTLN_D) is routed to this to the time slot (TPBTLN_D) of father's module; Continuing of called like this module finished, the bridge joint route of waiting for other modules of the moving into success message that continues.
If look for the failure of bridge joint time slot from father's module of called module, then this call failure needs to remove all calling routes that continued, and flow process is seen Figure 11, judges to work as whether front module is called module; If called module is then removed the calling route that has continued and is discharged the relevant time slot that takies; Discharge called call proceeding; Discharge the calling process; Call failure.If, then at first remove calling route and the relevant time slot that takies of release that this module has continued when front module is not called module; Look for the module that is attached thereto according to this module to the time slot of callee side again, notify its call failure; Recurrence discharges the bridge joint time slot like this, all discharges call failure until arriving all time slots of called module.So just realized the self-healing mechanism when system makes mistakes on stream, guaranteed that system can recover rapidly automatically after the accident of meeting accident.
Father's module in called module is looked for the bridge joint time slot according to calling subscriber place module, flow process is seen the frame 41,42,43 and 44 among Fig. 3, if can obtain this module simultaneously to calling subscriber's the time slot (OPFTLN_C) and the time slot (TPFTLN_D) of called module, illustrate that all required time slots all find, the time slot (TPFTLN_D) of this module that then continues from the time slot (OPFTLN_C) of caller module to called module, the time slot of bridge module continues and finishes like this; The time slot (OPBTLN_C) of notice caller modular splicing caller time slot (OPTLN_C) to the caller module to bridge module; (called module is continuing the time slot of called time slot to called module to bridge module before); The bridge joint path all continues and finishes; If can not obtain the time slot (as in Fig. 7 calling subscriber A and called subscriber D) of father's module of called module simultaneously to caller module and called module, illustrate that this module is to also having bridge module between the caller module, continue call flow Figure 10, flow process Figure 11, up to the time slot that finds the caller module, and the time slot on the used bridge module by flow process complete connection shown in Figure 3.
When talk-through need discharge the bridge joint route, begin to discharge all bridge joint time slots from called equally.Judge that at first whether calling and called are in same module.If in same module then directly tear road, call release open; If calling and called are not on same module then adopt the flow process of Fig. 8.Remove the speech channel on the called module, and discharge related time-slot.Judge whether the module that links to each other in this module Calling Side time slot is the caller module; If the caller module, the time slot of then notifying the caller module will arrive bridge module discharges, and the bridge joint time slot continues and finishes.If not the caller module, the bridge joint of notifying this module to discharge this calling, the flow process of recursive call Fig. 8 like this, until arriving the caller module, all bridge joint time slots continue and finish.
Connection method for time gap of multi-module bridging of the present invention is applied in experimental system, and through in many ways test with on probation, all obtained satisfied effect.In multimode tree group network structure and netted networking structure, realized quick cross-module optimum route querying, and intrasystem mistake self-healing can be provided, guarantee the reliable and stable running of system.
Claims (4)
1. a connection method for time gap of multi-module bridging for program controlled exchanger is characterized in that, the step of realization is as follows:
The first step is located calling and called user place module;
1. determine the module position at calling and called user place, and in the module at calling and called user place, distribute the time slot that continues to give calling and called user (11);
2. whether the time slot that continues of judging the calling and called user in same module then changes step 3 in same module; As not in same module, second step (12) of redirect;
3. in module, finish caller and called users and continue, process ends (13); In second step, in the module at called subscriber place, seek the direct connection relaying (21) whether have from called subscriber to calling subscriber, if having then by direct connection trunk connection bridge joint time slot, complete connection (22); If there is not the direct connection relaying then to change for the 3rd step;
In the 3rd step, continue and arrive the bridge joint time slot of higher level's module when the time slot of front module;
1. judge whether successfully to search out bridge joint time slot (31),, then change step 2 if seek successfully when father's module of front module; If seek failure, then jump procedure 3;
2. the time slot that will work as front module is routed on the time slot of its higher level's module (32), changes for the 4th step over to;
3. judge whether current module is called module (33), if then change step 4; If not called module, then jump procedure 6;
4. remove the bridge joint time slot that has continued, discharge calling and called call proceedings (34);
5. call failure finishes to continue flow process (35);
6. remove the bridge joint time slot that has continued, and send out message request release bridge joint time slot (36), return step 3 again,, discharge the call proceeding (34) of calling and called, finish to continue flow process up to returning called module to adjacent block;
In the 4th step, seek bridge joint time slot, complete connection in the module in higher level's module of front module in the 3rd step according to the calling subscriber place;
1. judge the time slot (41) in higher level's module, whether can obtain calling subscriber and called subscriber simultaneously, if could would change step 2; If can not obtain simultaneously, then return and carried out for second step (21);
2. calling and called user's bridge joint time slot (42) continues in higher level's module;
3. the calling and called subscriber bridging time slot (43) during protection has continued;
4. bridge joint time slot continue successfully (44).
2. a kind of connection method for time gap of multi-module bridging for program controlled exchanger according to claim 1 is characterized in that, also is included as the reliability that guarantees that bridge joint continues, and adopts the guard method of following bridge joint time slot in the system of two-node cluster hot backup:
1) job step of main frame
When receiving the request connect message, the associated bridge time slot that continues, and the notice standby host protects this to continue; When receiving the request release message, remove the associated bridge time slot, and the notice standby host goes to protect this to continue; When receiving the master by switching messages, the stand-by state of moving into; After receiving the claimed connect message of standby host, all the bridge joint time slot that has continued notice standby hosts;
2) job step of standby host
Receive when asking for protection connect message record associated bridge time slot; When receiving request release guard message, remove associated bridge time slot record; When receiving the master by switching messages, the main state of using of moving into; After receiving active and standby machine communication recovery message, send out connect message claimed to main frame.
3. a kind of connection method for time gap of multi-module bridging for program controlled exchanger according to claim 1, it is characterized in that, also comprise regularly the time interval resource between the module in continuing is proofreaded, when the state of two time slots in continuing is inconsistent, the bridge joint time slot of release busy, and remove the bridge joint speech channel that intermodule links to each other.
4. a kind of connection method for time gap of multi-module bridging for program controlled exchanger according to claim 1 is characterized in that, when talk-through discharges the bridge joint route (51), begins to discharge all bridge joint time slots from called; Judge that whether calling and called are in same module (52); If in same module then directly tear the road open, call release (53); If calling and called are on the same module then remove speech channel on front module, and discharge the bridge joint time slot (54) of this module; Obtain the module No. (55) of this bridge joint time slot correspondence; Whether the module that judgement links to each other with this module Calling Side time slot is caller module (56); If the caller module, the time slot of then notifying the caller module will arrive bridge module discharges (57), bridge joint time slot finish (58) of continuing; If not the caller module, the notice adjacent block discharges the bridge joint time slot (59) of this calling, and returns dismounting when the front module time slot, and until arriving the caller module, all bridge joint time slots continue and discharge finish (58).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011052864A CN1173527C (en) | 2001-01-19 | 2001-01-19 | Connection method for time gap of multi-module bridging for program controlled exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011052864A CN1173527C (en) | 2001-01-19 | 2001-01-19 | Connection method for time gap of multi-module bridging for program controlled exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1366398A CN1366398A (en) | 2002-08-28 |
| CN1173527C true CN1173527C (en) | 2004-10-27 |
Family
ID=4654369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011052864A Expired - Fee Related CN1173527C (en) | 2001-01-19 | 2001-01-19 | Connection method for time gap of multi-module bridging for program controlled exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1173527C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450124C (en) * | 2002-12-31 | 2009-01-07 | 中兴通讯股份有限公司 | Method of gap connecting on-and-off rapid detection |
| CN1937784B (en) * | 2006-09-26 | 2010-05-12 | 华为技术有限公司 | Programme-coutrolled digital exchange method and exchange device for realizing data exchange |
-
2001
- 2001-01-19 CN CNB011052864A patent/CN1173527C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1366398A (en) | 2002-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1859811A (en) | Passive optical network system and its service protective method | |
| CN101068139A (en) | Media gateway upper connection link main spare protecting method | |
| JP2000514960A (en) | Method and apparatus for routing an Internet call | |
| JP2002513534A (en) | Signaling network gateway device and its use in signaling networks | |
| CN1192094A (en) | Redundancy, expanded switching capacity and fault isolation arrangements for expandable telecommunications system | |
| AU719819B2 (en) | Procedure and system for ensuring emergency communication | |
| CN1921357A (en) | Full optical fibre protecting device and method | |
| CN1934561A (en) | Restoration mechanism for network topologies | |
| EP0909525B1 (en) | Atm telecommunications systems and method for routing narrow band traffic | |
| CN101262528B (en) | A multi-gateway backup method for voice access of network call | |
| US6493337B1 (en) | Method and apparatus for internet access which bypass local central end office using digital loop carrier and permanent signal treatment procedures | |
| CN1254126C (en) | Method and apparatus for management of signal-instruction link group | |
| JPH1084593A (en) | Method for recovering isdn d channel without losing signaling or packet data and its device | |
| CN1173527C (en) | Connection method for time gap of multi-module bridging for program controlled exchanger | |
| JP2001500334A (en) | Telecommunication intelligent network | |
| CN1142166A (en) | Channel-changing method and channel-changing controller | |
| CN1440605A (en) | Communications system | |
| CN1956425A (en) | Gateway apparatus and standby switching method thereof | |
| CN1925518A (en) | Module configuration managing method in compound telecommunication platform | |
| CN101051931A (en) | System and method for realizing business protection using LCAS protocol | |
| US5995618A (en) | Method for redirecting traffic on a communications network for conservation of network resources | |
| CN1845565A (en) | Method for solving interior and exterior simultaneous robbing under signaling and service separate structure | |
| CN1282330C (en) | Control gating method for realizing applied signalling to business in number 7 news distribution unit | |
| CN1160881C (en) | Method for implementing service routing in synchronous optical transmission system | |
| US6567510B1 (en) | Traffic monitor for detecting trunk traffic congestion in a telephone switching network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041027 Termination date: 20180119 |