CN105491049B - Calling based on SIP enhances control method - Google Patents
Calling based on SIP enhances control method Download PDFInfo
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- CN105491049B CN105491049B CN201510923296.9A CN201510923296A CN105491049B CN 105491049 B CN105491049 B CN 105491049B CN 201510923296 A CN201510923296 A CN 201510923296A CN 105491049 B CN105491049 B CN 105491049B
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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
- H04L65/1066—Session management
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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
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
Abstract
The present invention is suitable for New Technology Of Shortwave Communication field, provides a kind of calling enhancing control method based on SIP, including overtime forward rate-determining steps, forced releasing and forced interposing rate-determining steps and private network user's calling step.Commander's user's registration has multiple telephone numbers, if the telephone number commander user's time-out called certainly is not answered, forward to next herd number, until having attempted all telephone numbers；After onsite user and commander user establish calling connection, there is another commander user to need to call the onsite user, it is then tolled breakdown according to the execution of the priority of the two headquarter user and is operated with intrusion, meet the call demand of high priority commander user and onsite user；In addition it can also be achieved private network user calling.Technical solution of the present invention can neatly carry out Call- Control1 acording to the requirement of user, meet the various businesses demand of commander user and onsite user.
Description
Technical field
The invention belongs to New Technology Of Shortwave Communication fields more particularly to a kind of calling based on SIP to enhance control method.
Background technology
Session Initiation Protocol (Session Initiation Protocol, session initiation protocol) is by IETF (Internet
Engineering Task Force, internet engineering task group) formulate multimedia communication protocol.It is one and is based on text
Application layer control protocol, the session for creating, changing and discharging one or more participants.
Session Initiation Protocol is generally only practically applicable to simple both call and establishes process, during both sides' actual call, it may appear that
Some special circumstances, for example side user's time-out is not answered, multiple users call a user, call private network user etc., SIP associations
View is all to relevant Call- Control1, does not adapt to the exchange of integrated service in short wave communication network.
Invention content
In view of the above problems, the purpose of the present invention is to provide a kind of, and the calling based on SIP enhances control method, it is intended to solve
Not the technical issues of certainly existing Session Initiation Protocol does not adapt to the exchange of integrated service in short wave communication network.
The present invention adopts the following technical scheme that：
The calling based on SIP enhances control method, includes the following steps：
Overtime forward rate-determining steps：Onsite user uses default number calling commander user, when commander user's time-out does not connect
When listening, onsite user turns to next telephone number and continues calling commander according to the telephone number sequence of the commander user of setting
User, until having attempted all telephone numbers；Commander's user's registration has multiple telephone numbers, including fixed telephone number
And Mobile Directory Number；
Forced releasing and forced interposing rate-determining steps：After onsite user and commander user establish calling connection, if the finger for having priority high
When waving user's call try onsite user, then the commander user currently connected is tolled breakdown and operated with intrusion, it is described preferred
The high commander user of grade establishes calling connection with the onsite user；
Private network user's calling step：When commander user calls private network user, according to access node residing for private network user
Signal strength, frequency of use therefrom select several access nodes and initiate call request, and when private network, user receives call request
Afterwards, an access node access is selected.
The beneficial effects of the invention are as follows：Calling enhancing control of the method for the present invention based on SIP can be acording to the requirement of user
Call- Control1 is neatly carried out, the various businesses demand of commander user's (wire user) and onsite user (wireless user) are met,
Commander's user's registration has multiple telephone numbers, if telephone number commander user's time-out of calling is not answered, forward is to next
Herd number, until having attempted all telephone numbers；After onsite user and commander user establish calling connection, there is other one
A commander user needs to call the onsite user, then is tolled breakdown according to the execution of the priority of the two headquarter user and grasped with intrusion
Make, meets the call demand of high priority commander user and onsite user；It is connect in addition, private network user may be in multiple simultaneously
Under the signal covering of ingress, for commander for selecting several access nodes to initiate call request, private network user can select one
Access node accesses, and realizes private network user calling.
Description of the drawings
Fig. 1 is the flow chart of the calling enhancing control method provided in an embodiment of the present invention based on SIP；
Fig. 2 is the specific interaction diagrams of step S1 in Fig. 1；
Fig. 3 is the specific interaction diagrams of step S2 in Fig. 1；
Fig. 4 is the specific interaction diagrams of step S3 in Fig. 1.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
Fig. 1 shows the flow of the calling enhancing control method provided in an embodiment of the present invention based on SIP, for the ease of saying
It is bright to illustrate only and the relevant part of the embodiment of the present invention.
Calling enhancing control method provided in this embodiment based on SIP includes the following steps：
Step S1, overtime forward rate-determining steps：Onsite user uses default number calling commander user, when commander user is super
When Shi Wei is answered, onsite user turns to next telephone number and continues to exhale according to the telephone number sequence of the commander user of setting
It is commander user, until having attempted all telephone numbers；Commander's user's registration has multiple telephone numbers, including fixed electricity
Talk about number and Mobile Directory Number.
The present invention realizes onsite user calling commander user by the short wave communication network based on SIP.Described in the present embodiment
Onsite user and commander user all referring to actual use device end, wherein the onsite user is at distal end scene
Device end, wireless access short wave communication network, and the device end at commander user center in order to control, it is connect by wired mode
Enter to short wave communication network, the commander user that staff at the scene is located at control centre by onsite user's device call sets
It is standby.
In current Shortwave Communication System, commander user only has one, is frequently encountered commander's subscriber busy or current
Situations such as commander user does not answer for a long time can not relate in time if such onsite user has emergency to need to report
Commander user may bring about great losses.The audio call of onsite user is answered in time in order to facilitate commander user, first to referring to
The multiple telephone numbers of user's registration to be waved, can be phone number or base number, this multiple telephone number is associated, and according to
It is centainly ranked sequentially, first telephone number is default number, the Call Forwarding sequence that subsequent telephone number determines, headquarter
User can safeguard by self-service mode or by way of administrator.
When onsite user needs voice calls calling commander user, onsite user uses default number calling commander first
User, when commander user's time-out is not answered, onsite user turns to next according to the telephone number sequence of the commander user of setting
A telephone number continues calling commander user, and each telephone number corresponds to a commander user, until call try is complete all
Telephone number.Under normal circumstances, the corresponding user of the telephone number of all registrations is busy or all time-out the case where not answering
Substantially be not in ensure that commander user answers the audio call of onsite user in time.
Step S2, forced releasing and forced interposing rate-determining steps：After onsite user and commander user establish calling connection, if there is priority
When high commander user's call try onsite user, then the commander user currently connected is tolled breakdown and intrusion operates, institute
It states the high commander user of priority and establishes calling connection with the onsite user.
In emergency communication, since short wave channel has the characteristics that unstable, after onsite user's call setup, need as possible
There is another commander user to need to call the onsite user as commander user or onsite user's call using its link,
It is then tolled breakdown according to the execution of the priority of the two commander users and is operated with intrusion, meet high priority headquarter user and scene
The call demand of user.
Step S3, private network user calling step：When commander user calls private network user, accessed according to residing for private network user
Signal strength, the frequency of use of node therefrom select several access nodes and initiate call request, when private network user receives calling
After request, an access node access is selected.
Private network user may simultaneously be under the signal covering of multiple access nodes, in order to keep communication efficiency more preferable, private network
User can choose the stronger access node access of signal.In order to realize that commander user calls private network user in this step, through passing by one's way
By, according to the conditions such as the signal strength of access node, frequency of use residing for private network user, selecting plurality of access section after inquiring
Point is routed back to, while initiating call request message to multiple access nodes.After private network user receives call request message, selection
Which accessed from access node.
Above-mentioned steps S1, when specific implementation, as shown in Fig. 2, including the following steps：
S11, onsite user send voice-over-net call request to access node controller, and access node controller is completed real
When transmission RTP and eat dishes without rice or wine after link association, send the first INVITE request messages to shortwave service controller；Described first
INVITE request messages include calling number, called number, type of service, transmission channel information, caller location information etc..
In Session Initiation Protocol, the communication message between server and client side is divided into two classes：Request message and response message.
Wherein request message is client issues the sip message of server to activate specific operation, including INVITE,
ACK, BYE, CANCEL, OPTION and UPDATE message.Type is specific as follows in the 6 of sip request message：
1, (INVITE) is invited --- invite user that calling is added；
2, confirm (ACK) --- confirm that the final response to INVITE has been received in client computer；
3, option (OPTIONS) --- information of the request about server-capabilities；
4, goodbye (BYE) --- terminate the calling between two users in calling；
5, cancel (CANCEL) --- cancel the secondary operation；
6, (REGISTER) is registered --- the mapping for providing address resolution allows server to know the position of other users.
Response message is sip message of the server to the handling result of client feedback corresponding requests, including 1xx, 2xx,
3xx, 4xx, 5xx, 6xx are responded.Wherein 1xx classes message is Temporary Response, and message indicates that server or agency are being handled,
Determining response is not obtained also.Client should continue waiting for the response of server.When server prediction cannot within 200 milliseconds
When finally being responded, it should send a 1xx response.Server can send multiple 1xx responses.Here is common
1xx class messaging list.
100 call attempts (Trying) carrying out with call it is related operation (such as：Access database), but called subscriber
There are no positioning.
180 called terminal ringings (Ringing) called subscriber agency has obtained called position, just in destination user prompter.
The response can also initiate a local ring-back again
181 Call Forwardings (Call Is Being Forwarded) proxy server can indicate current with the conditional code
Calling is just being transferred to other destinations.(calling is forwarding)
182 call queuings (Queued) are called temporarily inaccessible, and active calls are queued rather than are rejected.Work as clothes
When business device is effective, the calling can be proceeded to respond to." the reason phrase " of the response can further provide queued call
Information, such as：" having 5 callings in queue, it is expected that the stand-by period is 15 minutes ".Server, which can send out multiple 182 responses, to be come
Update the information of current queued call.
183 session progress (session progress) response is used to prompt to establish the progress msg talked with.Reason-
Phrase (sentence of expression reason), header field or message body can be used for prompting the information of the new information of calling progress.
Wherein 2xx classes message is expressed as work(response, and request has been received, handles and has successfully been received；
200 OK--- are asked successfully.
The present embodiment is before request message and response message plus first, second waits words, is to distinguish different entity hairs
The message gone out not indicates the different message of content, wherein the content entrained by some message may be identical.Similarly hereinafter.
In this step, onsite user is wirelessly connected to Node Controller, and commander user is typically wire connected to shortwave voice gateways,
Onsite user sends voice-over-net call request to access node controller first, and access node controller sends the first INVITE
Request message is to shortwave service controller.
S12, shortwave service controller send the first MESSAGE request messages to regional complex management platform.Described first
MESSAGE request messages carry calling number, called number, type of service, caller location.
S13, regional complex management platform carry out business authentication according to the first MESSAGE request messages, and inquire quilt
Routing and record caller location are cried, then returns to the first OK response messages to shortwave service controller, the first OK responses disappear
Breath includes service authentication result, called routing, called transferred number, when the preceding mark code is that commander user's time-out is not answered,
Next phone number of the phone number of active calls, that is, prepare the phone number redirected.
After S14, shortwave service controller receive the first OK response messages of regional complex management platform, according to called road
By sending the 2nd INVITE request messages to shortwave voice gateways；The 2nd INVITE request messages include numbers of calling and called parties,
Transmission channel information, caller location.
S15, shortwave voice gateways send ALERTING message to commander user, complete real-time Transmission RTP and are closed with time division multiplexing tdm
Connection, and the first Ringing response messages are sent to shortwave service controller；The first Ringing response messages carry main quilt
It calls out the numbers code, transmission channel information.
S16, shortwave service controller send the 2nd Ringing response messages to access node controller, access node control
Device processed sends back bell and responds to onsite user；
If S17, shortwave service controller wait for the called time-out that listens response, and called subscriber has registered Forwarded-to number
Code, then trigger overtime forward process, and shortwave service controller is cancelled built to shortwave voice gateways transmission CANCLE request messages
Connection between vertical onsite user and commander's use；
S18, shortwave voice gateways return to the 2nd OK response messages to shortwave service controller.
S19, shortwave service controller initiate the 3rd INVITE request messages, the 3rd INVITE to shortwave voice gateways
Request message includes to carry numbers of calling and called parties, transferred number and transmission channel information；
S110, shortwave voice gateways complete the call treatment of commander's user outline number, if successfully connected, give shortwave
Service controller sends the 3rd Ringing response messages to shortwave service controller, if shortwave service controller waits for called connect
After listening response timeout, continues next transferred number and continue to trigger forward process, until commander user answers or all Forwarded-to numbers
Code call attempt finishes；The 3rd Ringing response messages include numbers of calling and called parties, transmission channel information.
S111, shortwave service controller record transmission channel information new in the 3rd Ringing response messages；Deng
After the 200ok response messages that callee side is sent arrive, transmission channel information is written in the 200ok responses to Calling Side.
After S112, called commander user answer, shortwave voice gateways return to the 3rd OK responses to shortwave service controller
Message；
S113, shortwave service controller are formed according to the new transmission channel information and the 3rd OK response messages
4th OK response messages, and it is sent to access node controller, the 4th OK response messages include numbers of calling and called parties and institute
State new transmission channel information；
S114, access node controller send the first acknowledgement character response message to shortwave service controller；First ACK is rung
It includes numbers of calling and called parties to answer message.
S115, shortwave service controller forward the first acknowledgement character response message to shortwave voice gateways；
S116, it establishes and converses by the access node controller and shortwave voice gateways, onsite user and commander user
Connection.
Above-mentioned steps S2, when specific implementation, as shown in figure 3, including the following steps：
After S21, onsite user establish call connection with the first commander user, when the second commander user needs to the scene
When user initiates audio call, shortwave voice gateways send the 4th INVITE request messages to shortwave service controller；4th
INVITE request messages carry numbers of calling and called parties, type of service, transmission channel information.
S22, shortwave service controller send the 2nd MESSAGE request messages to regional complex management platform；Described second
MESSAGE request messages include numbers of calling and called parties, type of service.
S23, regional complex management platform carry out business authentication according to the 2nd MESSAGE request messages, and inquire quilt
Routing and record caller location are cried, it is found that called onsite user with first commander's user's communication, compares the second commander user
Judge if the priority of the second commander user is higher than the priority of the first commander user with the priority of the first commander user
Intrusion is needed, regional complex management platform returns to the 5th OK response messages to shortwave service controller at this time, and the 5th OK is rung
It includes authentication result, called position and intrusion instruction to answer message；
After S24, shortwave service controller receive intrusion instruction, BYE request messages are sent to shortwave voice gateways, it is described
BYE request messages include the telephone number of the first commander user；
The connection of S25, shortwave voice gateways release the first commander user and onsite user, and returned to shortwave service controller
Return the 6th OK response messages；
S26, shortwave service controller according to currently called present user information, send re-INVITE request messages to
Access node controller, the re-INVITE request messages include numbers of calling and called parties, calling number, Call ID, transmission channel
Information, caller location, intrusion instruction；
S27, access node controller return the 4th Ringing response messages to shortwave service controller；
The 4th Ringing response messages are transmitted to shortwave voice gateways, shortwave language by S28, shortwave service controller
Sound gateway gives second commander user's ring-back tone；
S29, access node controller complete voice channel intrusion conversion, send the 7th OK response messages to shortwave business control
Device processed；The 7th OK response messages include numbers of calling and called parties.
7th OK responses are forwarded to shortwave voice gateways by S210, shortwave service controller；
S211, the completion of shortwave voice gateways are associated with the real-time Transmission RTP of the second commander user with time division multiplexing tdm, are sent out
Send the second ACK message to shortwave service controller；
S212, shortwave service controller forward second ACK message to access node controller；
S213, onsite user and the second commander user start to converse.
Above-mentioned steps S3, when specific implementation, as shown in figure 4, including the following steps：
After S31, commander user complete authentication, transmission the first call request of voice-over-net is then short to shortwave voice gateways
Wave voice gateways send the first call request of voice-over-net to shortwave service controller；First message related to calls carries calling and called
Number, type of service, Call ID, user plane information.In the present embodiment, private network user radio is connected to access node controller,
Commander user is typically wire connected to shortwave voice gateways.
S32, shortwave service controller send service access request to regional complex management platform；The service access request
Including numbers of calling and called parties, type of service, caller location.
S33, regional complex management platform ask finishing service certification according to the service access, and inquire called routing and
Caller location is recorded, then returns to service access response message to shortwave service controller；The service access response message packet
Containing authentication result and called position.
S34, according to the signal strength of access node, frequency of use residing for private network user, therefrom select several access nodes
Controller concurrently plays the second call request of voice-over-net.In diagram, shortwave service controller is to access node controller A and access
Node Controller B initiates the second call request of voice-over-net.Second call request includes to carry numbers of calling and called parties, Call
ID, user plane information, caller location.
S35, selected access node controller, i.e. access node controller A and B send voice-over-net call and disappear
Cease shortwave service controller；The voice-over-net call message includes ring-back, Call ID, called position.
S36, two shortwave service controllers send the voice-over-net call message to shortwave voice gateways, short
Wave voice gateways send voice prompt to commander user, and the content for reporting prompt tone is position or the state of onsite user；
S37, private network user therefrom select an access node controller and complete wireless link setup process, it is illustrated that in, access
Node Controller A is selected, and access node controller A sends off-hook and answers message to shortwave service controller；
S38, shortwave service controller forward the off-hook to answer message to shortwave voice gateways；
S39, shortwave voice gateways send the off-hook and answer message to headquarter user, and complete real-time Transmission RTP and
Time division multiplexing tdm is associated with, and the transmission of shortwave voice gateways listens response message to shortwave service controller；The message that listens response
Including Call ID.
Message is listened response to access node controller A described in S310, the forwarding of shortwave service controller；
S311, by access node controller A, Business Stream is established between private network user and commander user, both sides start to converse.
Specification, service node controller described above is needed to be civilian access node controller or pass through opening
The regional agency controller of access node access.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (4)
1. a kind of calling based on SIP enhances control method, which is characterized in that the method includes：
Overtime forward rate-determining steps：Onsite user uses default number calling commander user, when commander user's time-out is not answered,
Onsite user turns to next telephone number and continues calling commander user according to the telephone number sequence of the commander user of setting,
Until having attempted all telephone numbers；Commander's user's registration has multiple telephone numbers, including fixed telephone number and shifting
Mobile phone number；
Forced releasing and forced interposing rate-determining steps：After onsite user and commander user establish calling connection, if the commander for having priority high uses
When the family call try onsite user, then the commander user currently connected is tolled breakdown and operated with intrusion, the priority is high
Commander user and the onsite user establish calling connection；
Private network user's calling step：When commander user calls private network user, according to the signal of access node residing for private network user
Strong and weak, frequency of use, therefrom selects several access nodes and initiates call request, after private network user receives call request, choosing
Select an access node access.
2. method as described in claim 1, which is characterized in that the time-out forward rate-determining steps specifically include：
S11, onsite user send voice-over-net call request to access node controller, and access node controller is completed to pass in real time
Defeated RTP sends the first INVITE request messages to shortwave service controller with after link association of eating dishes without rice or wine；
S12, shortwave service controller send the first MESSAGE request messages to regional complex management platform；
S13, regional complex management platform carry out business authentication according to the first MESSAGE request messages, and inquire and be called road
By with record caller location, then to shortwave service controller return the first OK response messages, the first OK response message packets
Containing service authentication result, called routing, called transferred number, when the transferred number is that commander user's time-out is not answered, currently
Next phone number of the phone number of calling, that is, prepare the phone number redirected；
After S14, shortwave service controller receive the first OK response messages of regional complex management platform, according to called routing, hair
Send the 2nd INVITE request messages to shortwave voice gateways；
S15, shortwave voice gateways send ALERTING message to commander user, complete realtime transmission protocol RTP and are closed with time division multiplexing tdm
Connection, and the first Ringing response messages are sent to shortwave service controller；
S16, shortwave service controller send the 2nd Ringing response messages to access node controller, access node controller
It sends back bell and responds to onsite user；
If S17, shortwave service controller wait for the called time-out that listens response, and called subscriber has registered transferred number, then
The overtime forward process of triggering, shortwave service controller are cancelled established existing to shortwave voice gateways transmission CANCLE request messages
Connection between field user and commander's use；
S18, shortwave voice gateways return to the 2nd OK response messages to shortwave service controller；
S19, shortwave service controller initiate the 3rd INVITE request messages, the 3rd INVITE requests to shortwave voice gateways
Message includes to carry numbers of calling and called parties, transferred number and transmission channel information；
S110, shortwave voice gateways complete the call treatment of commander's user outline number, if successfully connected, give shortwave business
Controller sends the 3rd Ringing response messages to shortwave service controller, if shortwave service controller, which waits for being called, answers sound
After answering time-out, continues next transferred number and continue to trigger forward process, until commander user answers or all transferred numbers are exhaled
Trial is made to finish；
S111, shortwave service controller record transmission channel information new in the 3rd Ringing response messages；
After S112, called commander user answer, shortwave voice gateways return to the 3rd OK response messages to shortwave service controller；
S113, shortwave service controller are according to the new transmission channel information and the 3rd OK response messages composition the 4th
OK response messages, and be sent to access node controller, the 4th OK response messages include numbers of calling and called parties and described new
Transmission channel information；
S114, access node controller send the first acknowledgement character response message to shortwave service controller；
S115, shortwave service controller forward the first acknowledgement character response message to shortwave voice gateways；
S116, call connection is established by the access node controller and shortwave voice gateways, onsite user and commander user.
3. method as described in claim 1, which is characterized in that the forced releasing and forced interposing rate-determining steps specifically include：
After S21, onsite user establish call connection with the first commander user, when the second commander user needs to the onsite user
When initiating audio call, shortwave voice gateways send the 4th INVITE request messages to shortwave service controller；
S22, shortwave service controller send the 2nd MESSAGE request messages to regional complex management platform；
S23, regional complex management platform carry out business authentication according to the 2nd MESSAGE request messages, and inquire and be called road
By with record caller location, it is found that called onsite user with first commander's user's communication, compares the second commander user and the
The priority of one commander user judges to need if the priority of the second commander user is higher than the priority of the first commander user
Intrusion, to shortwave service controller the 5th OK response messages of return, the 5th OK is responded to disappear regional complex management platform at this time
Breath includes authentication result, called position and intrusion instruction；
After S24, shortwave service controller receive intrusion instruction, BYE request messages are sent to shortwave voice gateways, the BYE is asked
Message is asked to include the telephone number of the first commander user；
The connection of S25, shortwave voice gateways release the first commander user and onsite user, and return to the to shortwave service controller
Six OK response messages；
S26, shortwave service controller send re-INVITE request messages to access according to currently called present user information
Node Controller, the re-INVITE request messages include numbers of calling and called parties, calling number, transmission channel information, caller position
It sets, intrusion instruction；
S27, access node controller return the 4th Ringing response messages to shortwave service controller；
The 4th Ringing response messages are transmitted to shortwave voice gateways, shortwave voice network by S28, shortwave service controller
It closes to second commander user's ring-back tone；
S29, access node controller complete voice channel intrusion conversion, send the 7th OK response messages to shortwave Service control
Device；
7th OK responses are forwarded to shortwave voice gateways by S210, shortwave service controller；
S211, the completion of shortwave voice gateways are associated with the realtime transmission protocol RTP of the second commander user with time division multiplexing tdm, are sent out
Send the second ACK message to shortwave service controller；
S212, shortwave service controller forward second ACK message to access node controller；
S213, onsite user and the second commander user start to converse.
4. method as described in claim 1, which is characterized in that the private network user calling step specifically includes：
S31, commander user complete after authenticating, transmission the first call request of voice-over-net to shortwave voice gateways, then shortwave language
Sound gateway sends the first call request of voice-over-net to shortwave service controller；
S32, shortwave service controller send service access request to regional complex management platform；
S33, regional complex management platform ask finishing service certification according to the service access, and inquire called routing and record
Then caller location returns to service access response message to shortwave service controller；
S34, according to the signal strength of access node, frequency of use residing for private network user, therefrom select several access nodes to control
Device concurrently plays the second call request of voice-over-net；
S35, selected access node controller send voice-over-net call message to shortwave service controller；
S36, shortwave service controller send the voice-over-net call message to shortwave voice gateways, shortwave voice gateways
Voice prompt is sent to commander user, the content for reporting prompt tone is position or the state of onsite user；
S37, private network user therefrom select an access node controller and complete wireless link setup process, selected one
Access node controller sends off-hook and answers message to shortwave service controller；
S38, shortwave service controller forward the off-hook to answer message to shortwave voice gateways；
S39, shortwave voice gateways send the off-hook and answer message to headquarter user, and complete real-time Transmission RTP and time-division
TDM associations are multiplexed, the transmission of shortwave voice gateways listens response message to shortwave service controller；
The access node control to listen response described in S310, the forwarding of shortwave service controller selected by message to private network user
Device；
S311, by a selected access node controller, Business Stream, both sides are established between private network user and commander user
Start to converse.
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| CN108076055B (en) * | 2017-12-04 | 2020-06-30 | 北京邮电大学 | Method and device for controlling forced disconnection and forced insertion of SIP multi-party session |
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| CN1968318A (en) * | 2006-09-25 | 2007-05-23 | 华为技术有限公司 | Communication method, system for unified communication service and relevant apparatus |
| CN101553047A (en) * | 2009-04-23 | 2009-10-07 | 南京大学 | ROIP radio station transmission terminal device and transmission method |
| CN102185714A (en) * | 2011-05-04 | 2011-09-14 | 公安部沈阳消防研究所 | Intelligent networking management platform for fire emergency communication |
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| CN1968318A (en) * | 2006-09-25 | 2007-05-23 | 华为技术有限公司 | Communication method, system for unified communication service and relevant apparatus |
| CN101553047A (en) * | 2009-04-23 | 2009-10-07 | 南京大学 | ROIP radio station transmission terminal device and transmission method |
| CN102185714A (en) * | 2011-05-04 | 2011-09-14 | 公安部沈阳消防研究所 | Intelligent networking management platform for fire emergency communication |
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