CN101674593B - Dispatching method based on call permanent maintenance - Google Patents
Dispatching method based on call permanent maintenance Download PDFInfo
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- CN101674593B CN101674593B CN 200910190411 CN200910190411A CN101674593B CN 101674593 B CN101674593 B CN 101674593B CN 200910190411 CN200910190411 CN 200910190411 CN 200910190411 A CN200910190411 A CN 200910190411A CN 101674593 B CN101674593 B CN 101674593B
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Abstract
The invention discloses a dispatching method based on call permanent maintenance, comprising the steps of: when in initialized running of a dispatching system, setting up a control channel and a media channel from a dispatching machine to a dispatcher station; when in the running process of the dispatching system, periodically maintaining the control channel and the media channel by using the dispatching machine and the dispatcher station; managing the call of the dispatcher station by using the dispatched control channel and media channel; and after the dispatching system stops running, disassembling the control channel and the media channel of dispatching machine and the dispatcher station. As the control channel and the media channel which are needed for completing dispatching call of the dispatcher station are dispatched in advance and occupied in a permanent way, so that the reliable dispatching service can be ensured to be provided in a shared packet data network, the technology is simply implemented, special reformation is needed by the dispatching machine or the network, namely, the service quality of the dispatching call can be monitored in real time, and the high reliability of the dispatching system can be fully ensured.
Description
Technical field
The present invention relates to a kind of dispatching method based on calling out permanent maintenance, in particular in dispatching patcher, forever keep dispatching desk and control centre's device call, and carry out the method that availability checks.
Background technology
Dispatching patcher is a kind of communication system of special use, and the industry specific aim is very strong, and it is also very high that safety and stability requires, in the colliery, the industries such as electric power, traffic are widely adopted.Dispatching patcher is general main to be comprised of speech path equipment and control appliance, follow the development of the communication technology, in control appliance, extensively adopt at present digital program controlled, master-slave redundancy, the technology such as nonblocking switching, adopt proprietary subscriber's line in speech path equipment, these measures have all fully guaranteed the high reliability of dispatching patcher.But along with the development of TDM technology towards voip technology, voice and signaling no longer exclusively enjoy transmission line, have caused the reduction of communication reliability, have hindered the application of voip technology in dispatching patcher.For this problem, the main method of taking at present is by implement the technology of some QoS at data network, ensure reliability and the fail safe of packet voice transmission, this method has been improved reliability and the fail safe of voice communication to a certain extent, but when catastrophic failure or other traffic peak, the anxiety of resource still can cause the obstruction of crucial scheduling conversation, can't reach the fail safe of traditional TDM technology; Communication failure occurring, particularly can't identify timely and effectively during the media delivery fault.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide the calling-control method of dispatching patcher, for the defective of above-mentioned prior art, provide a kind of use based on calling out the permanent dispatching method that keeps, in voip network, provide reliable and secure dispatching method with convenient.
Technical scheme of the present invention comprises:
A kind of based on calling out the permanent dispatching method that keeps, it may further comprise the steps:
When A, dispatching patcher initialization operation, set up dispatcher to control channel and the media channel of dispatching desk;
In B, the dispatching patcher running, dispatcher and dispatching desk regularly carry out the maintenance of control channel and media channel;
The control channel of distributing in C, the use steps A and media channel manage the calling of dispatching desk;
D, dispatching patcher finish operation, remove control channel and the media channel of dispatcher and dispatching desk.
Described method, wherein, the mode of setting up described in the described steps A comprises that the standard interface or the privately owned interface that use communication specification to provide carry out conventional call establishment process.
Described method wherein, also comprises in the described steps A: dispatcher is connected with receive path the sendaisle of the media channel of distributing to dispatching desk, forms loop.
Described method wherein, also comprises in the described steps A: dispatching desk distributes a media channel to check counter, and media channel is checked counter O reset.
Described method wherein, also comprises in the described steps A: dispatching desk distributes a control channel to check counter, and control channel is checked counter O reset.
Described method, wherein, the maintenance of media channel is further comprising the steps of among the described step B:
F1, the quiet bag of dispatching desk timing cycle transmission check that with media channel counter adds one to dispatcher;
F2, dispatcher directly return to dispatching desk by the media channel loop with the quiet bag that receives;
The quiet bag that F3, dispatching desk receive behind the quiet bag and send compares, if sequence number unanimously then media channel is checked counter O reset;
F4, dispatching desk enter into the cycle of the quiet bag of next timed sending,, then think to send a warning message the media channel fault to dispatching desk greater than predetermined threshold value M if media channel checks counter; Otherwise, enter the next round proof cycle.
Described method, wherein, the maintenance of control channel is further comprising the steps of among the described step B:
F5, the transmission of dispatching desk timing cycle are shaken hands signaling to dispatcher, and control channel is checked that counter adds one;
After F6, dispatcher receive handshake information, handshake information is responded;
The handshake information that F7, dispatching desk receive after the handshake response and send compares, if sequence number unanimously then control channel is checked counter O reset;
F8, dispatching desk enter into the cycle of the quiet bag of next timed sending,, then think to send a warning message the control channel fault to dispatching desk greater than predetermined threshold value N if control channel checks counter; Otherwise, enter the next round proof cycle.
Described method, wherein, further comprising the steps of among the described step C:
C1, when dispatching desk is breathed out, dispatching desk sends to dispatcher by control channel with call request and call information, dispatcher is carried out call proceeding, with preallocated media channel be connected participant and connect, call proceeding is finished follow-up continuation of insurance and is stayed preallocated media channel, and carries out from ring;
When C2, dispatching desk receipt of call, dispatcher is by the relevant call information of control channel notice dispatching desk, and with preallocated media channel with is connected participant and connects, continuation kept preallocated media channel after call proceeding was finished, and carried out oneself and encircle;
C3, be checked through when calling out beginning at dispatching desk, the processing of pause step B behind end of calling, continues the processing of step B.
Described method, wherein, the call-connection process among described step C1 and the C2 also comprises: have in the calling that dispatching desk participates in any, do not need the resource of dispatching desk needs is reallocated.
Provided by the present invention based on calling out semipermanent method, because having adopted dispatching desk is to finish the realization that the needed control channel of dispatch call and media channel carry out preassignment and forever take, guaranteed in the packet data network of sharing, reliable dispatch service is provided, technology realizes simple, dispatcher or network be need not special transformation, and service quality that can the Real-Time Monitoring dispatch call is for the high reliability of dispatching patcher provides abundant assurance.
Description of drawings
Fig. 1 is the networking schematic diagram of basic dispatching patcher.
Embodiment
Below in conjunction with accompanying drawing, will be described in more detail each preferred embodiment of the present invention.
Dispatching patcher initialization flow process among the present invention is in this preferred embodiment, after system starts initialization, dispatcher reads configuration information, obtains the address information of fund allocation within a fund family platform, and dispatching desk can be one, also can be a plurality of, dispatcher can be carried out following handling process to all dispatching desks one by one:
A, be that dispatching desk distributes necessary media processing resources, is established to the control channel of dispatching desk;
B, send setup requests to dispatching desk by control channel;
C, dispatching desk response setup requests;
D, dispatcher are carried out loopback to media receive path and sendaisle;
The indication that E, dispatcher transmission connection have been set up is to dispatching desk;
F, dispatching desk send connection establishment response to dispatcher, distribute simultaneously a media channel inspection counting
Device and zero clearing distribute a control channel to check counter and zero clearing.
In this preferred embodiment, the step that the media channel inspection is carried out is: dispatching desk periodically produces timeout signal by the timer mechanism that operating system provides, this signal can trigger the media channel checking mechanism of dispatching desk, when start-up check, judge that at first media channel checks whether counter surpasses threshold value, in this example, this threshold value setting is 1, like this when once checking dropout arbitrarily, all will trigger the media channel fault warning, and shown by dispatching desk, if check counter less than 1, then dispatching desk sends quiet bag to dispatcher by media channel, will check that simultaneously the numerical value of counter adds 1, dispatcher will return to dispatching desk with quiet bag by loop after receiving quiet bag, dispatching desk receives and will compare the sequence number of two quiet bags, if two sequence numbers are equal, then media channel is checked counter O reset, otherwise wait for next timer expiry signal, repeat this flow process.
In this preferred embodiment, the step that the control channel inspection is carried out is: dispatching desk periodically produces timeout signal by the timer mechanism that operating system provides, this signal can trigger the control channel checking mechanism of dispatching desk, when start-up check, judge that at first control channel checks whether counter surpasses threshold value, in this example, this threshold value setting is 1, like this when any handshake is lost, all will trigger the control channel fault warning, and shown by dispatching desk, if check counter less than 1, then dispatching desk sends handshake request to dispatcher by control channel, will check that simultaneously the numerical value of counter adds 1, dispatcher will send handshake response to dispatching desk after receiving handshake request, dispatching desk compares the sequence number of handshake request and two message of handshake response, if two sequence numbers are equal, then control channel is checked counter O reset, otherwise wait for next timer expiry signal, repeat this flow process.
In this preferred embodiment, the flow process that dispatching desk is breathed out is: the user operates by dispatching desk, initiate a calling, after dispatching desk is finished the called address information, send setup requests by the control channel of having set up, stop simultaneously the regular check of control channel and media channel, after dispatcher receives setup requests, according to the called address information in the request, the called subscriber is arrived in call proceeding, behind called subscriber's receipt of call, dispatcher uses preallocated dispatching desk media channel to be connected the media connection with the called subscriber.After conversation is finished, dispatcher is removed the connection of having set up, send release signal to both sides, the control channel and the media channel that keep simultaneously preallocated dispatching desk, and media sendaisle and receive path are carried out loopback, after dispatching desk receives and calls out release signal, the regular check that recovers control channel and media channel.
In this preferred embodiment, the flow process of dispatching desk incoming call is: other user is initiated to the calling of specifying dispatching desk by dispatcher, dispatcher sends setup requests to dispatching desk by control channel, dispatching desk responds setup requests, stops simultaneously the regular check mechanism of control channel and media channel.Dispatcher is used pre-assigned dispatching desk media channel by behind the call setup response confirmation dispatching desk receipt of call, and calling subscriber's media channel connects, and both sides enter conversation.After calling is finished, dispatcher will be removed media and be connected, send and discharge indication to the both sides that participate in calling out, but the control channel and the media channel that keep the dispatching desk side, sendaisle and receive path with media channel carries out loopback simultaneously, after dispatching desk receives and discharges indication, the check process of media channel and control channel will be recovered.
In this preferred embodiment, because in the dispatching patcher running, control channel and media channel that dispatching desk needs are allocated in advance, guaranteed that dispatching desk resource under high traffic also can fully be ensured, thereby improved the reliability of dispatch call, reduced simultaneously the time delay of distributing, call setup can be faster effective.
In addition, for this preferred embodiment, media channel and control channel have periodic test, simultaneously by the setting to the inspection counter threshold, assurance can in time find and alarm for the sporadic fault that occurs in the network, thereby can supervise the user in time to fix a breakdown, and guarantees the availability of system.
Should be understood that, above-mentioned description for preferred embodiment of the present invention only is the example explanation, can not therefore think the restriction to scope of patent protection of the present invention, and scope of patent protection of the present invention should be as the criterion with claims.
Claims (8)
1. one kind based on calling out the permanent dispatching method that keeps, and it may further comprise the steps:
When A, dispatching patcher initialization operation, set up dispatcher to control channel and the media channel of dispatching desk;
In B, the dispatching patcher running, dispatcher and dispatching desk regularly carry out the maintenance of control channel and media channel;
The control channel of distributing in C, the use steps A and media channel manage the calling of dispatching desk;
D, dispatching patcher finish operation, remove control channel and the media channel of dispatcher and dispatching desk;
Wherein, described steps A specifically comprises: for dispatching desk distributes necessary media processing resources, be established to the control channel of dispatching desk; Send setup requests to dispatching desk by control channel; Dispatching desk response setup requests; Dispatcher is carried out loopback to media receive path and sendaisle; The indication that dispatcher transmission connection has been set up is to dispatching desk; Dispatching desk sends connection establishment response to dispatcher, distributes simultaneously a media channel to check counter and zero clearing, distributes a control channel to check counter and zero clearing;
Described step B specifically comprises media channel checking mechanism or the control channel checking mechanism of dispatching desk, wherein:
Dispatching desk periodically produces timeout signal by the timer mechanism that operating system provides, this signal can trigger the media channel checking mechanism of dispatching desk, when start-up check, judge that at first media channel checks whether counter surpasses threshold value, this threshold value setting is 1, like this when once checking dropout arbitrarily, all will trigger the media channel fault warning, and shown by dispatching desk, if check counter less than 1, then dispatching desk sends quiet bag to dispatcher by media channel, will check that simultaneously the numerical value of counter adds 1, dispatcher will return to dispatching desk with quiet bag by loop after receiving quiet bag, dispatching desk receives and will compare the sequence number of two quiet bags, if two sequence numbers are equal, then media channel is checked counter O reset, otherwise wait for next timer expiry signal, repeat this flow process;
Dispatching desk periodically produces timeout signal by the timer mechanism that operating system provides, this signal can trigger the control channel checking mechanism of dispatching desk, when start-up check, judge that at first control channel checks whether counter surpasses threshold value, this threshold value setting is 1, like this when any handshake is lost, all will trigger the control channel fault warning, and shown by dispatching desk, if check counter less than 1, then dispatching desk sends handshake request to dispatcher by control channel, will check that simultaneously the numerical value of counter adds 1, dispatcher will send handshake response to dispatching desk after receiving handshake request, dispatching desk compares the sequence number of handshake request and two message of handshake response, if two sequence numbers are equal, then control channel is checked counter O reset, otherwise wait for next timer expiry signal, repeat this flow process;
Described step C specifically comprises the flow process of dispatching desk exhalation and the flow process of incoming call, wherein:
The flow process that dispatching desk is breathed out is: the user operates by dispatching desk, initiate a calling, after dispatching desk is finished the called address information, send setup requests by the control channel of having set up, stop simultaneously the regular check of control channel and media channel, after dispatcher receives setup requests, according to the called address information in the request, the called subscriber is arrived in call proceeding, behind called subscriber's receipt of call, dispatcher uses preallocated dispatching desk media channel to be connected the media connection with the called subscriber; After conversation is finished, dispatcher is removed the connection of having set up, send release signal to both sides, the control channel and the media channel that keep simultaneously preallocated dispatching desk, and media sendaisle and receive path are carried out loopback, after dispatching desk receives and calls out release signal, the regular check that recovers control channel and media channel;
The flow process of dispatching desk incoming call is: other user is initiated to the calling of specifying dispatching desk by dispatcher, dispatcher sends setup requests to dispatching desk by control channel, dispatching desk responds setup requests, stops simultaneously the regular check mechanism of control channel and media channel; Dispatcher is used pre-assigned dispatching desk media channel by behind the call setup response confirmation dispatching desk receipt of call, and calling subscriber's media channel connects, and both sides enter conversation; After calling is finished, dispatcher will be removed media and be connected, send and discharge indication to the both sides that participate in calling out, but the control channel and the media channel that keep the dispatching desk side, sendaisle and receive path with media channel carries out loopback simultaneously, after dispatching desk receives and discharges indication, the check process of media channel and control channel will be recovered.
2. method according to claim 1 is characterized in that, the mode of setting up described in the described steps A comprises that the standard interface or the privately owned interface that use communication specification to provide carry out conventional call establishment process.
3. method according to claim 1 is characterized in that, also comprises in the described steps A: dispatcher is connected with receive path the sendaisle of the media channel of distributing to dispatching desk, forms loop.
4. method according to claim 1 is characterized in that, also comprises in the described steps A: dispatching desk distributes a media channel to check counter, and media channel is checked counter O reset.
5. method according to claim 1 is characterized in that, also comprises in the described steps A: dispatching desk distributes a control channel to check counter, and control channel is checked counter O reset.
6. method according to claim 1 is characterized in that, the maintenance of media channel is further comprising the steps of among the described step B:
F1, the quiet bag of dispatching desk timing cycle transmission check that with media channel counter adds one to dispatcher;
F2, dispatcher directly return to dispatching desk by the media channel loop with the quiet bag that receives;
The quiet bag that F3, dispatching desk receive behind the quiet bag and send compares, if sequence number unanimously then media channel is checked counter O reset;
F4, dispatching desk enter into the cycle of the quiet bag of next timed sending,, then think to send a warning message the media channel fault to dispatching desk greater than predetermined threshold value M if media channel checks counter; Otherwise, enter the next round proof cycle.
7. method according to claim 2 is characterized in that, the maintenance of control channel is further comprising the steps of among the described step B:
F5, the transmission of dispatching desk timing cycle are shaken hands signaling to dispatcher, and control channel is checked that counter adds one;
After F6, dispatcher receive handshake information, handshake information is responded;
The handshake information that F7, dispatching desk receive after the handshake response and send compares, if sequence number unanimously then control channel is checked counter O reset;
F8, dispatching desk enter into the cycle of the quiet bag of next timed sending,, then think to send a warning message the control channel fault to dispatching desk greater than predetermined threshold value N if control channel checks counter; Otherwise, enter the next round proof cycle.
8. method according to claim 1 is characterized in that, and is further comprising the steps of among the described step C:
C1, when dispatching desk is breathed out, dispatching desk sends to dispatcher by control channel with call request and call information, dispatcher is carried out call proceeding, with preallocated media channel be connected participant and connect, call proceeding is finished follow-up continuation of insurance and is stayed preallocated media channel, and carries out from ring;
When C2, dispatching desk receipt of call, dispatcher is by the relevant call information of control channel notice dispatching desk, and with preallocated media channel with is connected participant and connects, continuation kept preallocated media channel after call proceeding was finished, and carried out oneself and encircle;
C3, be checked through when calling out beginning at dispatching desk, the processing of pause step B behind end of calling, continues the processing of step B.
Method according to claim 8 is characterized in that, the call-connection process among described step C1 and the C2 also comprises: have in the calling that dispatching desk participates in any, do not need the resource of dispatching desk needs is gone reallocation.
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| CN 200910190411 CN101674593B (en) | 2009-09-16 | 2009-09-16 | Dispatching method based on call permanent maintenance |
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| CN 200910190411 CN101674593B (en) | 2009-09-16 | 2009-09-16 | Dispatching method based on call permanent maintenance |
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| CN101674593B true CN101674593B (en) | 2013-04-17 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747501A (en) * | 2004-09-08 | 2006-03-15 | 北京佳讯飞鸿电气有限责任公司 | Dispatch table and device of chief operator's desk for digital programmed dispatcher |
| CN2922344Y (en) * | 2006-05-26 | 2007-07-11 | 潍坊华光通讯有限公司 | Broadcasting call dispatching system |
| EP1942696A1 (en) * | 2005-05-03 | 2008-07-09 | IPWireless, Inc. | Signalling scheduling assitance data in a cellular communication system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747501A (en) * | 2004-09-08 | 2006-03-15 | 北京佳讯飞鸿电气有限责任公司 | Dispatch table and device of chief operator's desk for digital programmed dispatcher |
| EP1942696A1 (en) * | 2005-05-03 | 2008-07-09 | IPWireless, Inc. | Signalling scheduling assitance data in a cellular communication system |
| CN101252414A (en) * | 2005-05-03 | 2008-08-27 | Ip无线有限公司 | Apparatus and method for communicating signalling information |
| CN2922344Y (en) * | 2006-05-26 | 2007-07-11 | 潍坊华光通讯有限公司 | Broadcasting call dispatching system |
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