CN101193263B - Caller and called realization method for E1 private line conference TV system - Google Patents
Caller and called realization method for E1 private line conference TV system Download PDFInfo
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- CN101193263B CN101193263B CN2006101459994A CN200610145999A CN101193263B CN 101193263 B CN101193263 B CN 101193263B CN 2006101459994 A CN2006101459994 A CN 2006101459994A CN 200610145999 A CN200610145999 A CN 200610145999A CN 101193263 B CN101193263 B CN 101193263B
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Abstract
The invention discloses a method for realizing calling and being called in a video conference system with an E1 special line, which solves the problem of no concept of calling or being called in the existing E1 flow, and includes the processes: initializing a protocol stack, initializing H221 and H242, utilizing and establishing a calling object when a calling terminal is required; and simulating a concept of calling and simulating a concept of being called. Compared with the prior art, the invention simulates the concepts of calling and being called on the basis of the existing E1 processing flow. Two terminals connected with each other through an E1 line have the concepts of calling and being called, and after starting up, a first terminal can determine whether to transmit data to a second terminal according to requirements. Provided that the first terminal generates calling toward the second terminal actively, the second terminal can determine whether to receive the calling according to requirements. The invention allows users to have more optional processing methods. The invention increases the flexibility of the system and facilitates the operation for users.
Description
Technical field
The present invention relates to signaling and processing method of data in the data communication, mainly based in the TV conference system of E1 special line circuit between the video conference terminal or the processing method of the signaling between video conference terminal and the multipoint control unit (MCU).
Background technology
A basic multipoint videoconference system should be made up of MCU, conference terminal, transmission network.Video conference terminal based on the E1 special line utilizes the E1 line to be connected, and its signal inserts MCU or other terminal through the E1 line.
In private line conference TV system, between terminal and the terminal or the communication between terminal and the MCU directly link to each other by the E1 circuit.The main agreement of using has: H221, H242.The H221 version of an agreement has been stipulated the transmission channel of whole 64kbit/s～1920kbit/s is dynamically cut apart the channel that the city is suitable for the more low rate of audio frequency, video, data and telematics occasion again.Be exactly specifically: distribute various channels, and the frame structure of having stipulated initial channel and additional channel.H242 makes the other side know that it receives the decode the total capacity of various signals by its capability set of mutual transmission between terminal room or terminal and the MCU, carries out capability negotiation and carries out mode switch with this.As Fig. 1: two terminals that link to each other through the E1 circuit do not exist caller and called notion, and terminal or MCU (calling 1 terminal in the following text) start back just sends data to terminal that links to each other with this terminal (perhaps MCU) or MCU (calling 2 terminals in the following text) at once.If 2 terminals do not need to communicate with 1 terminal, but the feature of the E1 TV conference system that realizes according to H221, H242 version of an agreement, 1,2 two terminal is in normal communication state soon.At this moment, the user of terminal 2 has to enable and hangs up operation.Obviously, owing to there is not a called notion of caller, the user just not have active to make a call or selects the right of whether call accepted.This has just increased the complexity that the user handles.Its main shortcoming is system's shortcoming flexibility, the inconvenience of user's operation.
Summary of the invention
At lacking of existing of prior art and not enough, the invention provides a kind of caller and the method for called realization, the i.e. called notion of simulation caller on existing E1 flow process that can distinguish in the called E1 private line conference TV system of caller.
For achieving the above object, the present invention by the following technical solutions: the caller in the E1 private line conference TV system of the present invention and the method for called realization comprise the steps:
Steps A, initializtion protocol stack, initialization H221 and H242;
Step B when the needs calling terminal, uses and creates call object;
Step C, simulation caller notion, promptly the upper strata of protocol stack is created and is called out, protocol stack returns access success, the upper strata of protocol stack makes a call, and protocol stack is initiated H221, H242 and connected, exchange, the mode switch of framing signal operation of beginning H221 search frame and H242 ability;
Step D, simulate called notion, calling is created on the upper strata that is protocol stack, protocol stack initialization H221 and H242 module, the search of beginning Frame Aligning Word and return access success to the application of protocol stack is if search Frame Aligning Word then return the incoming call indication to the upper strata of protocol stack, the incoming call indication that the application layer process of protocol stack is current, and return call answering to protocol stack, capability set is set and begins H221 and the processing of H242.
Preferably: in the caller in described E1 private line conference TV system and the method for called realization, described step C also comprises:
Step C1, treat protocol stack return create access success after, to protocol stack the capability set of terminal is set, and transfers to the H242 module;
Step C2, application makes a call, and protocol stack carries out the processing of H221 and H242.
Preferably: in the caller in described E1 private line conference TV system and the method for called realization, further comprise before the processing of described beginning H221 and H242: use and return call answering to protocol stack.
Preferably: in the caller in described E1 private line conference TV system and the method for called realization, also comprise:
Step e is if the user as the calling other-end, at first creates to protocol stack and calls out;
Step F behind the access success, initiatively makes a call to other-end.
Preferably: in the caller in described E1 private line conference TV system and the method for called realization, also comprise:
Step G is not if the user as called, after protocol stack reports the incoming call indication, reply this calling and gets final product.
With respect to prior art, the present invention simulates the called notion of caller on existing E1 handling process.Two terminals that link to each other through the E1 circuit exist caller and called notion, can determine as required behind 1 starting up of terminal whether to send data to 2 terminals.If 1 terminal initiatively makes a call to 2 terminals, 2 terminals can determine whether call accepted as required.Make the user have more processing mode to select.Increased the flexibility of system, user-friendly.
Description of drawings
Fig. 1 is two communication terminal schematic diagrames based on E1 special line circuit;
Fig. 2 is not for there being two terminal communication flow charts of calling and called in the prior art;
Fig. 3 is calling procedure figure of the present invention;
Fig. 4 is called flow figure of the present invention.
Embodiment
The present invention is on existing E1 handling process, the called notion of simulation caller.
Existing E1 handling process does not have the calling and called notion, and with reference to accompanying drawing 2, its idiographic flow is:
The first step, initializtion protocol stack, initialization H221 and H242.
In second step, capability set (capability set of terminal) is set to protocol stack.And transfer to the H242 module.
In the 3rd step, protocol stack is initiated H221, H242 and is connected, the exchange of beginning H221 search frame framing signal (FAS sign indicating number) operation and H242 ability, mode switch etc.
The protocol stack that the present invention mentions is meant: of containing H221 agreement, H242 agreement, consultative management layer is overall.
The caller in the E1 private line conference TV system of the present invention and the method for called realization, the i.e. called notion of simulation caller on existing E1 flow process.Flow process is as follows:
Steps A, initializtion protocol stack, initialization H221 and H242;
Step B when the needs calling terminal, uses and creates call object;
Step C, simulation caller notion;
Step D simulates called notion.
With reference to accompanying drawing 3, the main flow process of simulation caller is:
The first step, the upper strata of protocol stack are created and are called out, and protocol stack returns access success.(the analog call notion is at first created and is called out).
In second step, the protocol stack upper strata makes a call.
In the 3rd step, protocol stack is initiated H221, H242 and is connected, the exchange of beginning H221 search frame framing signal (FAS sign indicating number) operation and H242 ability, mode switch etc.
With reference to accompanying drawing 4, simulate called main flow process and be:
The first step, the upper strata of protocol stack are created and are called out protocol stack initialization H221 and H242 module.And begin the search of Frame Aligning Word simultaneously and return access success to the application of protocol stack.
Second step is if search the H221 Frame Aligning Word then return incoming call indication to the upper strata.
The 3rd step, the incoming call indication that the application layer process of protocol stack is current.And return call answering to protocol stack.
In the 4th step, capability set is set and begins H221 and the processing of H242.
Through such simulation, if the user need call out other terminal, then at first to create and call out, behind the establishment access success, initiatively making a call gets final product; If do not need to call out other terminal, but as called, after protocol stack reported the incoming call indication, it was just passable not reply this calling.With respect to prior art, the present invention simulates the called notion of caller on existing E1 handling process.Two terminals that link to each other through the E1 circuit exist caller and called notion, can determine as required behind 1 starting up of terminal whether to send data to 2 terminals.If 1 terminal initiatively makes a call to 2 terminals, 2 terminals can determine whether call accepted as required.Make the user have more processing mode to select.Increased the flexibility of system, user-friendly.
Claims (5)
1.E1 the caller in the private line conference TV system and the method for called realization comprise the steps:
Steps A, initializtion protocol stack, initialization H221 and H242;
Step B when the needs calling terminal, uses and creates call object;
Step C, simulation caller notion, promptly the upper strata of protocol stack is created and is called out, protocol stack returns access success, the upper strata of protocol stack makes a call, and protocol stack is initiated H221, H242 and connected, exchange, the mode switch of framing signal operation of beginning H221 search frame and H242 ability;
Step D, simulate called notion, calling is created on the upper strata that is protocol stack, protocol stack initialization H221 and H242 module, the search of beginning Frame Aligning Word and return access success to the application of protocol stack is if search Frame Aligning Word then return the incoming call indication to the upper strata of protocol stack, the incoming call indication that the application layer process of protocol stack is current, and return call answering to protocol stack, capability set is set and begins H221 and the processing of H242.
2. the caller in the E1 private line conference TV system according to claim 1 and the method for called realization is characterized in that described step C also comprises:
Step C1, treat protocol stack return create access success after, to protocol stack the capability set of terminal is set, and transfers to the H242 module;
Step C2, application makes a call, and protocol stack carries out the processing of H221 and H242.
3. the caller in the E1 private line conference TV system according to claim 1 and the method for called realization is characterized in that the processing of described beginning H221 and H242 further comprises before: use and return call answering to protocol stack.
4. according to the caller in claim 2 or the 3 described E1 private line conference TV systems and the method for called realization, it is characterized in that also comprising:
Step e is if the user as the calling other-end, at first creates to protocol stack and calls out;
Step F behind the access success, initiatively makes a call to other-end.
5. the caller in the E1 private line conference TV system according to claim 4 and the method for called realization is characterized in that also comprising:
Step G is not if the user as called, after protocol stack reports the incoming call indication, reply this calling and gets final product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101459994A CN101193263B (en) | 2006-11-30 | 2006-11-30 | Caller and called realization method for E1 private line conference TV system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101459994A CN101193263B (en) | 2006-11-30 | 2006-11-30 | Caller and called realization method for E1 private line conference TV system |
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| Publication Number | Publication Date |
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| CN101193263A CN101193263A (en) | 2008-06-04 |
| CN101193263B true CN101193263B (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101459994A Expired - Fee Related CN101193263B (en) | 2006-11-30 | 2006-11-30 | Caller and called realization method for E1 private line conference TV system |
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| CN102006452A (en) * | 2010-11-24 | 2011-04-06 | 中兴通讯股份有限公司 | Method for monitoring terminal through IP network and MCU |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377186A (en) * | 1993-07-21 | 1994-12-27 | Telefonaktiebolaget L M Ericsson | System for providing enhanced subscriber services using ISUP call-setup protocol |
| CN1471314A (en) * | 2002-07-26 | 2004-01-28 | 华为技术有限公司 | Disconnection recalling mehtod for conference television system |
| CN1549544A (en) * | 2003-05-09 | 2004-11-24 | 张剑波 | Method and apparatus for conducting communication based on Internet |
| CN1725851A (en) * | 2004-07-20 | 2006-01-25 | 赵亮 | Control system and method of video conference |
| CN1816134A (en) * | 2005-02-06 | 2006-08-09 | 中兴通讯股份有限公司 | Multi-spot video conference system and media processing method |
-
2006
- 2006-11-30 CN CN2006101459994A patent/CN101193263B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377186A (en) * | 1993-07-21 | 1994-12-27 | Telefonaktiebolaget L M Ericsson | System for providing enhanced subscriber services using ISUP call-setup protocol |
| CN1471314A (en) * | 2002-07-26 | 2004-01-28 | 华为技术有限公司 | Disconnection recalling mehtod for conference television system |
| CN1549544A (en) * | 2003-05-09 | 2004-11-24 | 张剑波 | Method and apparatus for conducting communication based on Internet |
| CN1725851A (en) * | 2004-07-20 | 2006-01-25 | 赵亮 | Control system and method of video conference |
| CN1816134A (en) * | 2005-02-06 | 2006-08-09 | 中兴通讯股份有限公司 | Multi-spot video conference system and media processing method |
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