WO2013063959A1

WO2013063959A1 - Flash-based telephone service implementation method and system

Info

Publication number: WO2013063959A1
Application number: PCT/CN2012/078952
Authority: WO
Inventors: 李刚; 贺彬; 张治华
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-10-31
Filing date: 2012-07-20
Publication date: 2013-05-10
Also published as: CN103095648A

Abstract

A Flash-based telephone service implementation method and system. The method includes: a service-side system sending a call arrival request to a Flash user according to a received invitation request sent by an exchange network, receiving an answer request sent by the Flash user, establishing a call, notifying the Flash user that the call is established successfully, and completing the data transmission between the Flash user and an exchange network user.

Description

Method and system for implementing telephone service based on Flash

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and system for implementing a telephone service based on Flash. Background technique

Flash technology can provide text display functions, and audio and video services can be performed based on Flash. In the related art, when the telephone service is based on Flash, the Flash media server is centered, and the typical Flash media servers include: Adobe Flash Media Server and Red5.

At present, when the telephone service is based on Flash, the two parties can only be Flash users, and the Flash users cannot communicate with ordinary telephone users in the switching network, and the data exchange between the Flash users depends on the Flash media server, which is inconvenient to expand. Summary of the invention

The embodiment of the invention provides a method and a system for implementing a telephone service based on Flash, which is used to solve the problem that the telephone service according to the Flash in the related art cannot interact with the ordinary telephone user in the switching network, and the scalability is poor.

A method for implementing a telephone service based on Flash according to an embodiment of the present invention includes: receiving, by a service side system, an invitation request sent by a switching network;

The service side system sends a call arrival request to the Flash user according to the invitation request, and receives an answer request sent by the Flash user;

The service side system sends a response message to the session initiation protocol server SIP Server through the switching network according to the received answer request, and establishes a call;

The service side system notifies the Flash user that the call is successfully established, and completes the media data transmission between the Flash user and the switching network user.

Another Flash-based telephone service implementation method provided by the embodiment of the present invention includes: The service side system receives a call request sent by the Flash user;

The service side system sends an invitation request to the session initiation protocol server SIP Server according to the call request; when receiving the successful response returned by the SIP server, the call response information is sent to the Flash user to establish a call;

The service side system notifies the switching network user that the call is successfully established, and completes the media data transmission between the Flash user and the switching network user.

A service side system provided by an embodiment of the present invention, where the system is configured to:

Sending a call arrival request to the Flash user according to the received invitation request from the exchange network user, and receiving an answer request sent by the Flash user, and sending a response message to the session initiation protocol server SIP Server through the switching network according to the received answer request. Establish a call, notify the Flash user that the call is successfully established, and complete the media data transmission between the Flash user and the switching network user. Another service side system provided by the embodiment of the present invention is configured to:

Receiving a call request sent by the Flash user; sending an invitation request to the session initiation protocol server SIP Server according to the call request; sending a called response message to the Flash user, establishing a call when receiving the successful response returned by the SIP server; notifying the switching network The user call is successfully established, and media data transmission between the Flash user and the switching network user is completed.

In the embodiment of the present invention, whether the call inside the system or the outside of the system is logically the same, the possibility of modifying the Flash soft phone when the service change is minimized is minimized, and the application is highly scalable, because each Flash There is no logical connection between users, and system capacity can be increased by simply increasing the number of servers.

BRIEF abstract

FIG. 1 is a schematic diagram of an overall implementation process of a Flash-based telephone answering service according to an embodiment of the present invention;

2 is a schematic structural diagram of a Flash-based telephone service implementation system according to an embodiment of the present invention;

3 is a note of the Flash-based telephone service of the present invention in conjunction with the system of the embodiment shown in FIG. 2. a detailed description of the process of the book;

FIG. 4 is a schematic diagram of a call initiation process in a Flash-based telephone service implementation according to an embodiment of the present invention; FIG.

FIG. 5 is a process of receiving a call in a Flash-based telephone service according to an embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

In order to realize the intercommunication between the Flash user and the ordinary telephone user of the switching network, and improve

The scalability of the Flash user, the embodiment provides a Flash-based telephone service implementation method and system.

FIG. 1 is a schematic diagram of an overall implementation process of a Flash-based telephone answering service according to an embodiment of the present invention, including the following steps:

S101: The service side system receives an invitation invite request sent by the switching network.

When there is an incoming call on the switching network, the Session Initiation Protocol (SIP) server (Server) of the switching network sends an invite request to the service side system.

S102: The service side system sends a call arrival request to the Flash user according to the request, and receives an answer request sent by the Flash user.

The service side system notifies the Flash user of the arrival of the call through a reverse invoke ( invoke) request, and simultaneously responds to the SIP Server 180 to try to send information. When the Flash user receives the call arrival request sent by the service side system, the user is prompted, and according to the operation of the user clicking the answer button, the service side system sends an answer request requesting to answer the call.

S103: The service side system sends a response message to the session initiation protocol server SIP Server through the switching network according to the received answer request, and establishes a call.

In the embodiment of the present invention, the service side system sends a standard SIP 200 response according to the answer request to the Sip Server, until the service side system receives the acknowledgement character (ACK) from the calling party, and the call signaling interaction is completed, and the call succeeds. set up. S104: The service side system notifies that the Flash call is successfully established, and completes media data transmission between the Flash user and the switching network user.

The process of receiving a call by the Flash user includes: the service side system receives the call request sent by the Flash user; the service side system sends an invitation request to the session initiation protocol server SIP Server according to the call request; Upon receiving the 180Ringing returned by the SIP server, the response message is sent to the Flash user to establish a call; the service side system notifies the switching network user that the call is successfully established, and completes the media data transmission between the Flash user and the switching network user.

The service-side system notifies the Flash user that the call is successfully established through a reverse invoke request, and gives a unique release stream and play stream name in the system. The Flash user opens a stream (publish), that is, the local microphone audio is packaged and sent to the service side system in Real Time Messaging Protocal (RTMP) format, and the above play stream named by the service side system is played at the same time.

The service-side system converts the media data data format (such as Nelly\Speex audio) released by the Flash user into a peer media format (for example, G.711 a-law audio), and sends it to the media port of the other party, and at the same time, from the opposite media. The port receives the media data, converts the peer media data format (for example, G.711 a-law audio) into a media data format recognizable by the Flash user (for example, Nelly\Speex audio), packages the content in the RTMP format, and sends the data to the Flash user.

Since the core logic of the softphone is implemented in the service side system in the embodiment of the present invention, the Flash user can only be responsible for the interface presentation and the collection and playback of the media data, thereby reducing the core logic and interface coupling degree of the Flash user. In addition, the service side system is equivalent to a plurality of softphone objects, and there is no logical connection between the plurality of softphone objects. The process of initiating or receiving a call from a softphone object is handled by the standard sip protocol. Whether it is a call within the system, or an inter-system call or a call over an external exchange network, it is logically consistent, minimizing the need to modify the Flash softphone when the service changes, and the application is highly scalable. Moreover, the system is easy to expand. Since there is no logical connection between Flash phones, the system capacity can be increased by simply increasing the number of servers.

One of the benefits of Flash itself is that 99% of Internet users have installed and are using flash controls, so the terminal side phone software eliminates the need for installation.

In addition, in the embodiment of the present invention, the service side system completes the Flash user and exchanges the network telephone. Before the telephone service between users, the Flash user needs to complete registration. The specific registration process includes: The service side system receives an invoke registration request sent by the Flash user; the service side system generates a SIP registration request by the registration request, and sends the SIP registration request to the SIP server. ; Notify the Flash user of the registration result information returned by the SIP Server.

2 is a schematic structural diagram of a Flash-based telephone service implementation system according to an embodiment of the present invention. The system includes: a softswitch system 21, a service side system 22, a Flash Client 231, and an external user agent 24. The monthly service side system is mainly divided into two parts: RTMP adaptation module and user agent class module. The RTMP adaptation module is mainly responsible for interfacing with the Flash user 23 (RTMP-based invoke signaling and media); the user agent class module is mainly responsible for signaling interaction with the softswitch system 21 and performing media exchange with the external user agent 24.

Specifically, taking the answering service as an example, the service side system 22 receives the invitation request sent by the softswitch system 21; sends a call arrival request to the Flash user 23 according to the invitation request, and receives the answer request sent by the Flash user 23; The answering request sends a response message to the session initiation protocol server SIP Server through the softswitch network 21 to establish a call; notifies the Flash user 23 that the call is successfully established, and completes the media between the Flash user 23 and the exchange network user (external user agent 24). data transmission.

Specifically, the Flash user 23 implements a telephone service through a terminal interface, and a Flash client 231 is installed on the terminal, and the user 23 initiates and answers the call by using a button operation on the Flash client 231. The Flash user 23 is further configured to send a registration request to the service side system 22 before the telephone service is implemented by the service side system; the service side system 22 is further configured to receive the registration request sent by the Flash user 23; and generate the SIP registration by using the registration request. Request, and send to the SIP Server; notify the Flash user 23 of the registration result information returned by the SIP Server.

In order to implement the soft phone service between the Flash user 23 and the external user agent 24, the service side system 22 includes two modules, an RTMP adaptation logic module 221 and a SIP user agent class module 222.

FIG. 3 is a detailed description of a registration process of a Flash-based telephone service according to an embodiment of the present invention in conjunction with the system shown in FIG. 2, the process comprising the following steps:

S301: The callback function of the RTMP adaptation logic module 221 in the service side system 22 receives an invoke registration request from the Flash user 23, where the invoke registration request carries the Flash. Identification information of the household 23.

S302: The service side system 22 sends a SIP registration request to the Sip Server. The registration request of the SIP carries the identification information of the Flash user 23 and the address information of the service side system.

Therefore, the Sip Server can route related SIP commands corresponding to the identification information to the service side system.

S303: The service side system 22 receives the registration response from the Sip Server.

S304: The service side system 22 determines whether the registration is successful according to the returned registration response. When the registration is successful, the process proceeds to step S305. If the registration is unsuccessful, the process proceeds to step S306.

S305: The service side system 22 sends an RTMP adaptation logic module 221 through an interface function.

Invoke-RegOK to Flash user 23, the registration process ends.

S306: The service side system 22 calls the RTMP adaptation logic module 221 to send the Invoke-RegFail to the Flash user 23 through the interface function, and then proceeds to step S101 to allow the Flash user 23 to initiate the registration request again.

After the Flash user registration is completed, the call and answer operations can be performed.

FIG. 4 is a process of starting a call in a Flash-based telephone service implementation process according to an embodiment of the present invention, where the process includes the following steps:

S401: The Flash user inputs a number in the Flash client, clicks the call button, and sends an Invoke-Call call request to the service side system.

S402: The service side system invokes a callback function of the RTMP adaptation logic module to obtain an Invoke-Call call request from the Flash user, and sends a Si command-invitation request to the Sip Server, where the Sip command carries the service-side system. Session description (SDP) information, the SDP information includes the address of the service side system, supported media formats (eg, G.711 a-law audio and G.711 u-law audio), and media ports. The media port assignment may be Each time a different port is assigned, multiple calls (Users) can share a Local User Datagram Protocol (UDP) port.

S403: The service-side system starts a timer, and determines whether the Sip command -180Ringing from the Sip Server is received within the timing length of the timer. When the determination result is yes, step S404 is performed. When the result of the determination is no, the process proceeds to step S407.

S404: The service side system sends an answer message Invoke-alerting to the Flash user through the interface, and the Flash user's client prompts the Flash user peer to ring through the voice and text.

S405: Start another timer, and determine whether the Sip command S200 command of the Sip Server is received within the time limit of the timer. When the determination result is yes, proceed to step S406. When the determination result is no, perform the step. S407.

S406: Send the SIP command -ACK to the Sip Server, send the Invoke-establish to the Flash user and start the media exchange.

Specifically, the service side system sends the RTMP adaptation logic module by using an interface function.

Invoke-establish to the Flash user, specifying the name of the playback stream and the distribution stream. At this point, the Flash user's client prompts the Flash user that the call has been established through voice and text. The Flash user opens the stream (publish), that is, the local microphone audio is packaged and sent to the service side system in RTMP format, and the stream stream is played (stream.play), which is the above-mentioned playback stream named by the service side system. At this time, the service side system initiates media exchange between the parallel Flash user and the call peer.

The specific media processing process includes: the service side system obtains an uplink media stream from the Flash user through a callback function of the RTMP adaptation logic module, and decodes the same into Pulse Coding Modulation (PCM) data. The decoded PCM is encoded in a negotiated format, such as G.711 a-law audio format encoding, and packaged into a Real-time Transport Protocol (RTP) packet, which is sent to an external user agent at the opposite end of the call.

The service side system also receives RTP packets from the external user agent of the opposite end of the call and decodes them into PCM data in a negotiated format. The decoded PCM data is encoded into a media format recognizable by the Flash user, for example, the Speex, Nelly Moser audio format, and the RTMP adaptation logic module is called by the interface function to generate an RTMP data packet to be sent to the Flash user, which is a downlink media stream.

S407: If the Flash user refuses to answer, the 4xx command indicating the error needs to be sent to the Sip Server; if the call is successfully established, the Flash user needs to send the bye command to the Sip Server by pressing the hang up button, instead, if it receives the Sip Server from the Sip Server The bye command, you need to respond to the Sip Server 200OK. Finally, send Invoke-CallClose to the Flash user, notify the Flash user to reset Is idle.

FIG. 5 is a process of receiving a call in a Flash-based telephone service implementation according to an embodiment of the present invention, where the process includes the following steps:

S501: The service side system receives a Sip command from the Sip Server - an invite (Invite) request. S502: The service side system responds to the Sip Server with the Sip command -180 Ringing.

S503: The service side system invokes the RTMP adaptation logic module by using an interface function, and sends an Invoke-incomming request to the Flash user.

S504: Start a timer, determine whether the answer request sent by the Flash user is received within the time limit of the timer, and if the answer request is received, proceed to step S505. If the answer request is received, proceed to step S508.

If the Flash user clicks the button, the Flash user's client makes an answer request.

If the Flash user clicks the hang up button at this time, the Flash user's client issues an hang-up request.

S505: The service side system sends a Sip command -200OK to the Sip Server, where the 200 OK carries the SDP information of the service side system.

The SDP information includes an address of the service side system, a supported media format (for example, G.711 a law audio and G.711 u law audio), and a media port. The media port can be assigned with different ports each time, or multiple calls can share a local UDP port.

S506: The service-side system starts a timer, and determines whether the Sip command-ACK from the Sip Server is received within the timing length of the timer. When the determination result is yes, the process proceeds to step S507. If the determination result is no, the process proceeds to step S508. .

S507: The service side system sends an Invoke-establish request to the Flash user, and starts media exchange. Specifically, the service side system calls the RTMP adaptation logic module to send the Invoke-establish to the Flash user through the interface function, and specifies the names of the play stream and the release stream. At this time, the Flash user's client prompts the Flash user to establish a call through voice and text. The Flash user opens the microphone (stream.publish), that is, the local microphone audio is packaged and sent to the service side system in the RTMP format, and the above-mentioned playback stream named by the service side system, that is, the downlink media stream, is played (stream.play). This The service side system initiates media exchange between the parallel Flash user and the call peer.

The specific media processing process includes: the service side system obtains an uplink media stream from the Flash user by using a callback function of the RTMP adaptation logic module, and decodes the same into a Primary Code Modulation (PCM) data. The decoded PCM is encoded in a negotiated format, such as G.711 a-law audio format encoding, and packaged into a Real-time Transport Protocol (RTP) packet, which is sent to an external user agent at the opposite end of the call.

S508: If the Flash user refuses to answer, the 4xx command indicating the error needs to be sent to the Sip Server; if the call is successfully established, the Flash user needs to send the bye command to the Sip Server by pressing the hang up button, instead, if it receives the Sip Server from the Sip Server The bye command, you need to respond to the Sip Server 200OK. Finally, send Invoke-CallClose to the Flash user, informing the Flash user to reset to idle state.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Accordingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may use software functions. The form of the module is implemented. The invention is not limited to any specific form of combination of hardware and software.

It should be noted that the present invention may have various other embodiments without departing from the spirit of the present invention. Changes and modifications are intended to be included within the scope of the appended claims.

INDUSTRIAL APPLICABILITY The solution of the embodiment of the present invention minimizes the possibility of modifying the Flash softphone when the service changes, and the application has strong scalability, and the weapon can increase the system capacity by simply increasing the number of servers.

Claims

Claim

A method for implementing a telephone service based on Flash, the method comprising:

The service side system receives an invitation request sent by the switching network;

The service side system sends a response message to a Session Initiation Protocol (SIP) server through the switching network according to the answering request, and establishes a call;

The monthly service side system notifies the Flash user that the call is successfully established, and completes media data transmission between the Flash user and the switching network user.

2. The method according to claim 1, wherein before the step of the service side system receiving the invitation request sent by the switching network, the method further includes:

Receiving, by the service side system, a registration request sent by the Flash user;

The service side system generates a SIP registration request by the registration request, and sends the SIP registration request to the SIP server;

Notifying the Flash user of the registration result information returned by the SIP server.

3. The method according to claim 1, wherein the step of completing media data transmission between the Flash user and the switching network user comprises:

Receiving an uplink media stream from the Flash user, decoding the uplink media stream into pulse code modulation (PCM) data, and encoding the PCM data according to an encoding format negotiated with the user of the switching network, and transmitting To the switching network user;

Receiving a Real Time Transport Protocol (RTP) data packet sent from the user of the switching network, decoding into PCM data according to a format negotiated with the Flash user, and encoding the PCM data into a media format recognizable by the Flash user, A Real Time Messaging Protocol (RTMP) data packet is generated and sent to the Flash user.

4. A method for implementing a telephone service based on Flash, the method comprising:

The service side system receives a call request sent by the Flash user; The service side system sends an invitation request to a Session Initiation Protocol (SIP) server according to the call request;

Sending a call response message to the Flash user to establish a call when receiving a successful response returned by the SIP server;

The service side system notifies the switching network user that the call setup is successful, and completes the media data transmission between the Flash user and the exchange network user.

The method of claim 4, wherein before the step of the service side system receiving the call request sent by the Flash user, the method further includes:

The method of claim 4, wherein the step of completing media data transmission between the Flash user and the switching network user comprises:

Receiving an uplink media stream from the Flash user, decoding the uplink media stream into original code modulation (PCM) data, and encoding the PCM data according to an encoding format negotiated with the user of the switching network, and transmitting To the switching network user;

7. The method of any of claims 4-6, wherein the success response is 200 OK.

8. A service side system, the system being set to:

Receiving a call arrival request to the Flash user according to the received invitation request from the switching network user, and receiving an answer request sent by the Flash user, according to the received answer request, to the Session Initiation Protocol (SIP) server through the switching network Sending a response message, establishing a call, notifying the Flash user that the call is successfully established, and completing media data transmission between the Flash user and the switching network user.

9. The system of claim 8 further configured to:

Receiving a registration request sent by the Flash user; generating a SIP registration request by the registration request, and sending the SIP registration request to the SIP server; and notifying the Flash user of the registration result information returned by the SIP server.

10. The system of claim 8 configured to perform media data transmission between the Flash user and a switched network user in the following manner: receiving an upstream media stream from the Flash user, decoding it into a pulse Coding and modulating (PCM) data, and encoding the PCM data according to an encoding format negotiated with the user of the switching network, and transmitting to the switching network user; receiving a real-time transmission protocol sent by the user of the switching network ( An RTP packet is decoded into PCM data according to a format negotiated with the Flash user, and the PCM data is encoded into a media format recognizable by the Flash user, and a Real Time Message Protocol (RTMP) data packet is generated and sent to the Flash user.

11. The system of claim 10, comprising an RTMP adaptation module and a user agent class module, wherein the RTMP adaptation module is configured to perform signaling and media interaction with the Flash user, the user agent The class module is configured to perform signaling interaction with the SIP server to perform media interaction with the switching network user.

12. A service side system, which is configured to:

Receiving a call request sent by the Flash user; sending an invitation request to the Session Initiation Protocol (SIP) server according to the call request; sending a called response message to the Flash user when receiving the successful response returned by the SIP server, establishing Calling; notifying the switching network user that the call is successfully established, and completing media data transmission between the Flash user and the switching network user.

13. The system of claim 12 further configured to:

Receiving a registration request sent by the Flash user; generating a SIP registration request by the registration request, and sending the request to the SIP server; and notifying the Flash user of the registration result information returned by the SIP server.

14. The system of claim 12 arranged to perform media data transfer between the Flash user and the switching network user in the following manner:

Receiving an upstream media stream from the Flash user, decoding it into Pulse Code Modulation (PCM) data, and decoding the decoded PCM data according to an encoding format negotiated with the user of the switching network After encoding, sending to the switching network user; receiving a Real Time Message Protocol (RTP) data packet sent from the switching network user, decoding into PCM data according to a format negotiated with the Flash user, and encoding the PCM data A routing table maintenance protocol (RTMP) data packet is generated for the Flash user identifiable media format and sent to the Flash user.

15. The system of claim 14, comprising an RTMP adaptation module and a user agent class module, wherein the RTMP adaptation module is configured to perform signaling and media interaction with the Flash user, the user agent The class module is configured to perform signaling interaction with the SIP server to perform media interaction with the switching network user.

The system of any of claims 12-14, wherein the success response is 200 OK.