WO2008116408A1 - Système, équipement et procédé de mise en œuvre de services d'appel spéciaux - Google Patents

Système, équipement et procédé de mise en œuvre de services d'appel spéciaux Download PDF

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Publication number
WO2008116408A1
WO2008116408A1 PCT/CN2008/070403 CN2008070403W WO2008116408A1 WO 2008116408 A1 WO2008116408 A1 WO 2008116408A1 CN 2008070403 W CN2008070403 W CN 2008070403W WO 2008116408 A1 WO2008116408 A1 WO 2008116408A1
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WO
WIPO (PCT)
Prior art keywords
service
type
special call
request message
special
Prior art date
Application number
PCT/CN2008/070403
Other languages
English (en)
French (fr)
Inventor
Jiu Li
Gaoqi Chen
Zhangping Ma
Zhou Yu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP08715139.5A priority Critical patent/EP2150013B1/en
Publication of WO2008116408A1 publication Critical patent/WO2008116408A1/zh
Priority to US12/417,345 priority patent/US8446847B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1046Call controllers; Call servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1096Supplementary features, e.g. call forwarding or call holding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1101Session protocols
    • H04L65/1104Session initiation protocol [SIP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2207/00Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
    • H04M2207/18Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place wireless networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42314Systems providing special services or facilities to subscribers in private branch exchanges
    • H04M3/42323PBX's with CTI arrangements

Definitions

  • the present invention relates to communication technologies, and in particular, to a system and method for implementing a special call type service, a special call type service entity, and a special call type service processing device.
  • the special communication system in addition to the conventional communication system, there are special communication systems such as a dispatch communication system and a contact center system.
  • the special communication system also has a special call type service, such as: Intensive business, forced demolition service, group call service, interception service, emergency broadcast service, and call level service.
  • the intrusion service means that a high-level user can force "plug-in", a low-level user is in the middle of a call.
  • the forced-demolition service refers to disconnecting the two parties who are on the call, making a call with one of the parties, and going to live another
  • the group call service means that a high-level user can call a group of users at the same time to hold an instant conference call.
  • the emergency broadcast service means that when an emergency occurs, the dispatching station sends an emergency to the designated user group.
  • the broadcast notification the user group's phone will be automatically picked up (no user action required), and in the hands-free listening state.
  • These special call services serve the daily operation and management of the enterprise or organization.
  • a special communication system based on other signaling control protocols such as the SIP (Session Initiation Protocol) protocol, the H.323 protocol, the MGCP (Media Gateway Control Protocol) protocol or the Q.931 protocol
  • SIP Session Initiation Protocol
  • H.323 the H.323 protocol
  • MGCP Media Gateway Control Protocol
  • Q.931 the Q.931 protocol
  • These signaling control protocols can be IP-based (Internet Protocol)-based protocols.
  • the principle of the TDM time slot switching technology is that after the voice sent by the calling user is converted into a binary stream of a certain length by analog and analog-to-digital conversion, the binary code stream enters the switching network, and the switching mesh is taken from the calling side. The binary stream is switched to the line on the called side, and the called side voice is digital-to-analog converted, and the voice is played on the called side.
  • the scheduling communication system based on TDM time slot exchange includes four parts: scheduling communication switch, pipe Platform, dispatching station, user station.
  • scheduling communication switch includes four parts: scheduling communication switch, pipe Platform, dispatching station, user station.
  • pipe Platform includes four parts: scheduling communication switch, pipe Platform, dispatching station, user station.
  • dispatch communication system based on TDM time slot switching.
  • the communication switch is dispatched to exchange voices from the user side to implement various special call services, and can be connected to other communication systems.
  • Scheduling communication switches are usually hardware systems based on large-scale and very large-scale integrated circuits, or load control software on a single board, which is relatively expensive.
  • the management console is used to configure and manage the dispatching communication switch, which can be a commercial workstation or server.
  • the dispatching station is configured to send a scheduling message to the subscriber station by scheduling the communication switch to call the subscriber station.
  • the dispatching station can be a specially customized telephone having a plurality of buttons on it, or software running on a computer (or workstation).
  • the computer or workstation
  • the computer is usually connected to a microphone and a singer 3? - The corpse.
  • the subscriber station is configured to receive, by using the scheduling communication switch, a scheduling message sent by the dispatching station.
  • the subscriber station can be an ordinary telephone.
  • the above-mentioned TDM time slot exchange-based dispatch communication system can perform voice service excellently, but the dispatch communication system uses the data packet format and standard used by the intra-area local area network in the communication process, so that the system and the system Integration of other systems (such as industrial automation systems, information systems, etc. owned by companies or organizations) is difficult, so in order to improve the operational efficiency of the entire enterprise or organization, a new special call-type business system is needed to facilitate Other systems are integrated.
  • Embodiments of the present invention provide a system, apparatus, and method for implementing a special call type service that conforms to an Internet Protocol based signaling control protocol to facilitate integration with other information systems.
  • the embodiment of the invention discloses a system for implementing a special call type service, which comprises:
  • Initiating a special call type service entity configured to send a session establishment request message with a service type identifier; the service type identifier is used to indicate a service type of a special call type service, and the session establishment request message conforms to an Internet Protocol-based signaling Control protocol
  • the special call type service processing apparatus is configured to receive the session establishment request message with the service type identifier, and implement a special call type service according to the service processing logic corresponding to the service type determined by the service type identifier.
  • the embodiment of the invention further discloses a special call type service processing device, comprising: a receiving unit, And a method for receiving a session establishment request message sent by the sending unit, where the session establishment request message carries a service type identifier, and a determining unit, configured to determine a service type identified by a service type identifier of the session establishment request message received by the receiving unit a storage unit, configured to store service processing logic information, where the service processing logic information includes a service type and service processing logic corresponding to the service type, and a processing unit, configured to determine, according to the service unit, the service type and the storage unit
  • the stored business processing logic information implements a special call type service.
  • the embodiment of the invention also discloses a service entity for initiating a special call, including:
  • a setting unit configured to set a service type identifier in the session establishment request message, where the service type identifier is used to indicate a service type of a special call type service, and the session establishment request message is consistent with a signaling control protocol based on an internet protocol;
  • a sending unit configured to send, to the special call type service processing apparatus, a session establishment request message set by the setting unit, where the session establishment request message includes a service type identifier.
  • the embodiment of the invention also discloses a method for implementing a special call type service, which comprises:
  • the session establishment request message conforming to an internet protocol based signaling control protocol and carrying a service type identifier
  • a special call-type service is implemented by using an IP-based signaling control protocol. Since most of the information systems of the enterprise are IP-based, the system for implementing a special call service is implemented in the embodiment of the present invention. It can be easily integrated with most information systems, so that the method and system for implementing special call-like services of the embodiments of the present invention can be easily integrated with other information systems of enterprises or organizations, and then can be based on information of other information systems.
  • the special call type service is triggered to make the information of the other information systems more effectively utilized, and provides a powerful means for improving the operational efficiency of the enterprise.
  • FIG. 1 is a network diagram of a system for implementing a special call service according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of a special call service processing apparatus according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of implementing a strong insertion service according to Embodiment 2 of the present invention.
  • FIG. 4 is a flowchart of a method for joining a calling party of an intruding service to a conference site according to Embodiment 2 of the present invention
  • FIG. 5 is a flowchart of a method for joining a called party to a conference site according to a second embodiment of the present invention
  • FIG. 6 is a flowchart of implementing a demolished service according to Embodiment 2 of the present invention
  • FIG. 7 is a flowchart of implementing a group call service according to Embodiment 2 of the present invention.
  • FIG. 8 is a flowchart of the method for joining the called party of the group call service to the conference site according to the second embodiment of the present invention
  • FIG. 9 is a flowchart of implementing the emergency broadcast service according to the third embodiment of the present invention.
  • This embodiment discloses a system for implementing a special call type service, which is based on an IP-based signaling control protocol (for example, SIP protocol, H.323 protocol, MGCP protocol, or Q.931 protocol).
  • IP-based signaling control protocol for example, SIP protocol, H.323 protocol, MGCP protocol, or Q.931 protocol.
  • SIP protocol for example, SIP protocol, H.323 protocol, MGCP protocol, or Q.931 protocol.
  • the system for implementing a special call service includes: an Internet Protocol Private Branch eXchange (IP-PBX) 10, a special call service processing device 11, a media resource server 12, and a management station ( Not shown in the figure), a special call type service entity 13 and a subscriber station 14 are initiated.
  • IP-PBX Internet Protocol Private Branch eXchange
  • a special call type service entity 13 and a subscriber station 14 are initiated.
  • the IP-PBX 10 is configured for user registration, and receives a session establishment request message for initiating a special call type service entity, and provides distribution of the session establishment request message and call routing.
  • the IP-PBX 10 may be a commercial server or a communication device in the form of a board.
  • the session establishment request message carries a service type identifier, and the service type identifier may identify an aggressive insertion service, a forced disconnection service, a group call service, and the like.
  • the special call type service processing apparatus 11 is configured to receive a session establishment request message forwarded by the IP-PBX 10, and implement a special call type service, a special call type service by using the IP-PBX 10 and the media resource server 12 according to the service type of the session establishment request message.
  • the processing device 11 is further configured to define service processing logic corresponding to the service type.
  • the special call type service processing device 11 can be an application server (AS) supporting the SIP protocol.
  • the special call service processing device 11 can be integrated with the IP-PBX10, the application server, the special terminal (the dispatcher, the attendant console, the customized terminal, etc.), or can be deployed on another server or a board.
  • MRS Media Resource Server
  • the media resource server 12 may be a board based on a Digital Signal Processor (DSP) or a CPU running some software.
  • DSP Digital Signal Processor
  • not all services require the participation of the media resource server 12.
  • the forced insertion service and the group call service need to be implemented by using the media resource server; the forced disconnection service and the monitoring service can be implemented by using the media resource server; and the emergency broadcast service and the call level service do not require the participation of the media resource server.
  • the management station which configures and manages the dispatch communication system, which can be a business computer or workstation.
  • the special call type service entity 13 is initiated, and the method includes: a setting unit, configured to set a service type identifier in the session establishment request message, where the service type identifier is used to indicate a service type of the special call type service, and the session establishment request message is based on The SIP protocol, the H.323 protocol, the MGCP protocol, or the Q.931 protocol; the sending unit, configured to send a session establishment request message to the special call type service processing apparatus 11 by using the IP-PBX 10, where the session establishment request message includes a service type identifier.
  • the initiating special call type business entity 13 may be a specially customized SIP protocol telephone, or a special call type business entity in the form of software running on a computer or workstation (in which case the computer or workstation should be equipped with a microphone and a speaker), or It is a dispatching station, an attendant console, a call center agent, a customized terminal, an application server, and an IP PBX.
  • the user station 14 is used for the scheduled user terminal, and may be a normal SIP telephone or a conventional analog telephone.
  • the analog telephone communicates with the IP-PBX10 through an access gateway (AG) device. even.
  • AG access gateway
  • the special call type service processing apparatus includes:
  • the receiving unit 21 is configured to receive the session establishment request message, where the session establishment request message carries a service type identifier;
  • a determining unit 22 configured to determine a service type identified by a service type identifier of the session establishment request message
  • the storage unit 23 is configured to store service processing logic information, where the service processing logic information includes a service type and a service processing logic corresponding to the service type;
  • the updating unit 24 is configured to update the service processing logic information stored by the storage unit 23, and the service processing logic information stored by the update storage unit includes: adding new definition service processing logic information in the storage unit 23, and/or modifying the storage unit 23 The existing business processing logic information;
  • the processing unit 25 is configured to implement a special call type service according to the service type determined by the determining unit 22 and the service processing logic information stored by the storage unit 23.
  • the communication between the special call type service processing apparatus 11, the media resource server 12, the originating special call type service entity 13, and the subscriber station 14 can be directly connected without passing through the IP-PBX 10.
  • the intermediate entity that cannot identify the special service identity transparently transmits the session establishment request message.
  • the embodiment of the present invention discloses a method for implementing a special call type service (such as a strong insertion service, a forced release service, and a group call service) by using a media resource server, the method comprising: receiving a session establishment request message, where the session establishment request message carries a service type identifier Determining the service type identified by the service type identifier of the session establishment request message; and implementing the special call type service by using the media resource server according to the determined service type.
  • a special call type service such as a strong insertion service, a forced release service, and a group call service
  • the special call type service may be initiated by a special call type service entity, that is, the special call type service entity sends a session establishment request message to the special call type service processing device through the IP-PBX.
  • the session establishment request message carries a service type identifier, and the service type may be an aggressive insertion service, a forced disconnection service, a group call service, or the like.
  • the special call type service processing device After receiving the session establishment request message from the service entity of the special call type, the special call type service processing device triggers the special call type service by using the service type identifier carried in the session establishment request message.
  • the session establishment request message may be an extended INVITE message or a customized message in the SIP protocol.
  • a voice mix and a video mix resource can be provided by a media resource server.
  • the extension of the INVITE request may be the following (or other similar manners): 1) Add a new attribute in the To header field of the INVITE request, for example, add a type attribute, which is used to identify a special call type service. Type of business;
  • SDP Session Descriptive Protocol
  • the session establishment request message may be sent by using the extended INVITE message to implement the strong insertion service, that is, the service type identifier is added in the INVITE message, and the service type identifier is set to be strongly inserted, and the specific extension mode may add parameters in the To header field. Indicates that the call type is forced.
  • the session establishment request message may be sent by extending the INVITE signaling to implement the forced teardown service, that is, the service type identifier is added in the INVITE signaling, and the service type identifier is set to be demolished, and the specific extension manner may be added in the To header field.
  • the parameter indicates that the call type is forced release.
  • the session establishment request message may be sent by extending the INVITE signaling to implement the group call service, that is, adding the service type identifier in the INVITE signaling, and setting the service type identifier to the group call, and the peer unified resource identifier (The Uniform Resource Identifier (URI) is set to the ID of the group.
  • the specific extension mode can be added to the To header field to indicate that the call type is a group call.
  • the above extended session establishment request message method is also applicable to the H.323 protocol, the MGCP protocol or The Q.931 protocol, for example, adds an attribute to the Setup message of the H.323 protocol, and causes the attribute to be used to identify the service type of the special call type service; adding an attribute to the CRCX message of the MGCP protocol, and using the attribute for the attribute The service type of the special call type service is added; the attribute is added to the setup message of the Q.931 protocol, and the attribute is used to identify the service type of the special call type service.
  • the special call type service processing device After receiving the session establishment request message, the special call type service processing device implements the logic corresponding to the service type by using the service type identifier in the session establishment request message.
  • Step 1 Query the session state of the called party that is forcibly inserted, set a timer, and wait for the response.
  • Step 2 Wait for a response.
  • step 6 When the response is a timer timeout, go to step 6;
  • Step 3 Add the strongly inserted calling party A to the site, set a timer, and wait for a response. When the join fails or the timer expires, go to step 6;
  • Step 4 Add the called party B, which is forcibly inserted, to the site, set a timer, and wait for a response. When the join fails or the timer expires, go to step 6;
  • Step 5 Add the called party C to the site, set a timer, and wait for a response. When the join fails or the timer expires, go to step 6;
  • the process of joining the intruded calling party to the conference site and transferring the called party to the conference site can be implemented by the following process.
  • Step 31 The dispatching station A sends a first invitation (Invite (offer 1)) message to the special call-type service processing device, where the Invite (offer 1) message includes the SDP information of the dispatching station A, and the SDP information carries the IP of the dispatching station A. Address, supported encoder/decoder, etc.
  • Step 32 The special call type service processing apparatus returns a 180 message to the dispatching station A (i.e., a ringing response returned to the scheduling station A).
  • Step 33 The special call type service processing apparatus sends a first invitation (Invite (offer 1)) message to the media resource server, where the Invite (offer 1) message carries the IP address of the dispatching station A, the supported codec/decoder, and the like. .
  • Step 34 After receiving the Invite (offer 1) message, the media resource server returns a 200 OK ( answer 2 ) (response) message to the special call service processing device.
  • the response includes SDP information of the media resource server, that is, an IP address of the media resource server, a supported codec/decoder, and the like.
  • Step 35 The special call type service processing apparatus sends a 200 OK message with the media resource server SDP information to the dispatching station A.
  • Step 36 The special call type service processing apparatus sends an ACK (acknowledgement) message to the media resource server.
  • Step 37 The dispatching station A sends an ACK (acknowledgement) message to the special call type service processing device.
  • the dispatching station A obtains the SDP of the media resource server, and the media resource server also obtains the SDP of the dispatching station A.
  • the media resource server can add the dispatching station A to a certain site to communicate with each other.
  • Step 41 The special call service processing device first sends a second invite (Invite) message to the media resource server, where the Invite The message does not carry the SDP information of the special call type service processing device.
  • Step 42 After receiving the Invite message, the media resource server sends a 200 response message to the special call type service processing device, where the 200 response message carries the SDP of the media resource server.
  • Step 43 The special call type service processing apparatus sends the first invitation to the subscriber station B (Invite).
  • the Invite ( offer 1 ) message sending the SDP of the media resource server to subscriber station B. Since the Invite (offer 1) message is the second time that the special call service processing device issues an Invite message, the Invite ( offerl ) message is also referred to as a Re-Invite message.
  • Step 44 The subscriber station B sends a 200 OK message to the special call service processing device, where the 200 The OK message carries the SDP of subscriber station B.
  • Step 45 After obtaining the SDP of the subscriber station B, the special call service processing apparatus sends an ACK response message with the subscriber station SDP to the media resource server.
  • Step 46 The special call type service processing apparatus sends an ACK message to the subscriber station B.
  • the subscriber station B obtains the SDP of the media resource server, and the media resource server also obtains the SDP of the subscriber station B, so that the subscriber station B is redirected from the original call to the conference site of the media resource server.
  • steps 41-46 only the process of joining a user (subscriber B) in the intrusion service to the conference site is described. For another user (user station C) in the forced insertion service, it can be added to the conference based on the same process.
  • the implementation process is shown in Figure 6.
  • 4 means that A is the calling party of the demolitions, B and C are the called party of the demolitions, A can correspondingly initiate the special call type service entity (hereinafter, the dispatching station is taken as an example), and B and C can correspondingly initiate the special calling class.
  • the dispatching station is taken as an example
  • B and C can correspondingly initiate the special calling class.
  • Step 51 Query the session state of the called party that is demolished, set a timer, and then wait for the response.
  • Step 52 Wait for a response.
  • step 56 When the response is a timer timeout, go to step 56;
  • Step 53 Add the forcibly-called calling party A to the site, set a timer, and then wait for a response. When the join fails or the timer expires, go to step 56;
  • Step 54 Add the called party B to the conference site, set a timer, and then wait for a response. When the join fails or the timer expires, go to step 56;
  • Step 55 Deactivate the called party C, that is, send the Bye message directly to the called party C, and then wait for the response.
  • Step 56 end.
  • the implementation steps are as follows. As shown in FIG. 7, the following describes a method for implementing a group call service, where H is not the calling party of the group call, B is the called party of the group call, and A can initiate a special call type service entity (hereinafter, scheduling) For example, the B can be used to initiate a special call service entity or subscriber station.
  • scheduling a special call type service entity
  • Step 61 Query the session state of the called party of the group call, set a timer, and then wait for the response.
  • Step 62 waiting for a response.
  • step 66 When the response is that the timer expires, go to step 66;
  • step 63 When the response is busy, go to step 63.
  • Step 63 Transfer the called party B to another conference site, and set a timer, and then wait for the interface to respond.
  • step 66 is performed;
  • step 66 When the transfer is successful, go to step 66.
  • Step 64 Add the called party B of the group call to the conference site, set a timer, and then wait for a response.
  • error processing is performed, and step 66 is performed;
  • step 66 When the join is successful, go to step 66.
  • Step 66 end.
  • the step of implementing the group call service includes the process of adding the called party of the group call to the conference site.
  • the process of joining the called party (ie, user station B) of the group call to the site is as shown in Figure 8, and includes the following steps:
  • Step 71 The special call service processing device sends a second invite (Invite) message to the media resource server, where the Invite message does not carry the SDP of the special call service processing device.
  • a second invite Invite
  • Step 72 After receiving the second invite (Invite) message, the media resource server sends a 200 response message to the special call service processing device, where the 200 response message carries the SDP of the media resource server.
  • Step 73 The special call type service processing apparatus sends a first invitation (Invite ( offerl ) ) message to the subscriber station B, and sends the SDP of the media resource server to the subscriber station B.
  • Step 75 After obtaining the SDP information of the subscriber station B, the special call service processing apparatus sends an ACK response message with the subscriber station SDP to the media resource server.
  • Step 76 The special call type service processing apparatus sends an ACK message to the subscriber station B.
  • the user station B obtains the SDP information of the media resource server, and the media resource server also obtains the SDP information of the user station B, so that the user station B is redirected from the original call to the venue of the media resource server. .
  • This embodiment discloses a method for implementing a special call type service (taking an emergency broadcast service as an example), and the method includes: receiving a session establishment request message, where the session establishment request message carries a service type identifier; determining session establishment The service type of the request message identifies the identified service type; implements a special call type service according to the determined service type.
  • the emergency broadcast service may be initiated by a special call-type service entity (for example, a dispatching station), that is, a special call-type service entity is sent to a special call-type service processing device through an IP-PBX. And sending a session establishment request message, where the session establishment request message carries a service type identifier, where the service type may be an emergency broadcast service identifier.
  • the special call type service processing device After receiving the session establishment request message from the dispatching station, the special call type service processing device triggers the emergency broadcast service by using the emergency broadcast identifier carried in the session establishment request message.
  • the session establishment request message may be an extended INVITE message or a customized message in the SIP protocol. See Example 2 for how to extend the INVITE request. The process of implementing an emergency broadcast service will be described below with reference to FIG. 9 by taking an INVITE message as an example.
  • Step 91 When an emergency occurs, the administrator sends an Invite message to the special call service processing device by using the IP-PBX, and the Invite message carries the emergency broadcast service identifier.
  • Step 92 After receiving the Invite message, the special call service processing device finds that the service type identifier is an emergency broadcast service, obtains the subscriber station number of the current call according to the emergency broadcast service processing logic, and then sends the IP address to all users through the IP-PBX. The station sends an Invite message, and the Invite message carries an emergency broadcast service identifier.
  • the service type identifier is an emergency broadcast service
  • Step 93 After the user station receives the invitation (Invite) message with the emergency broadcast service identifier, Use hands-free function.
  • Step 94 The subscriber station returns a 200 OK response message to the dispatching station.
  • Step 95 The emergency broadcast service between the dispatching station and the multiple subscriber stations is successfully established.
  • the dispatcher can send voice to the subscriber station.
  • the second embodiment and the third embodiment only describe some special call services: the forced insertion service, the forced demolition service, the group call service, and the emergency broadcast service, and other special call services (such as the interception service and the call level service), and the implementation method thereof. Similar to the above method, it will not be described here.
  • the structure of the session establishment request message is simply extended to meet the requirements of the communication protocol for the special call type service such as monitoring.
  • the embodiment of the present invention simply extends the session establishment request of the existing IP-based signaling control protocol (SIP protocol, H.323 protocol, MGCP protocol, or Q.931 protocol).
  • IP-based signaling control protocol is an IP-based protocol and is fully compatible with the communication protocol, not only can the system and method of the embodiments of the present invention be well interfaced with other communication entities in the communication system, but also conveniently Integration with other systems can improve the efficiency of enterprise operations; there are few extensions, and the development cost is lower for communication equipment vendors who already have mature IP-based signaling control protocol stacks.
  • the initiating special call type business entity may be a console of an automatic control system.
  • the service type may also be an automatic control system fault identifier, where the automatic control system fault identifier includes an automatic control system identifier and a fault number, when an abnormal situation occurs in the automatic control system,
  • the automatic control system console sends a session establishment request message with an automatic control system fault identifier to the special call type service processing device.
  • the special call service processing device receives the session establishment request message whose service type is the automatic control system identifier, The fault can be handled according to the automatic control system identification and predetermined rules (such as initiating a call), thereby facilitating enterprise management.
  • the special call service system of the embodiment of the present invention can be easily integrated with the automatic control system, which can improve the management efficiency of the enterprise.
  • the IP-based signaling control protocol is extended in a manner similar to the embodiment of the present invention, and the monitoring can be supported at a lower design and development cost. Special call business. While the invention has been described by the embodiments of the invention in the embodiments of the invention Request to limit.

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Description

实现特殊呼叫类业务的系统、 装置和方法
本申请要求于 2007 年 3 月 26 日提交中国专利局、 申请号为 200710088095.7、 发明名称为"实现特殊呼叫类业务的系统、 装置和方法,,的中 国专利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术, 尤其涉及一种实现特殊呼叫类业务的系统和方法、 发起特殊呼叫类业务实体和特殊呼叫类业务处理装置。
背景技术
在通信技术中, 除了常规的通信系统外, 还有调度通信系统、联络中心系 统等特殊通信系统, 所述的特殊通信系统除了具有正常的电话呼叫功能以外, 还具有特殊呼叫类业务, 比如: 强插业务、 强拆业务、 组呼业务、 监听业务、 紧急广播业务和呼叫级别业务等。 所述强插业务是指高级别的用户可以强制 "插入,,低级别用户正在进行中的通话。所述强拆业务是指将正在通话的双方拆 开, 与其中一方进行通话, 并去活另一方通话。 所述组呼业务是指高级别的用 户可以同时呼叫一组用户, 以召开即时的电话会议。 所述紧急广播业务是指当 紧急情况发生时, 由调度台向指定用户组发送紧急广播通知, 用户组的电话会 自动接起(不需要用户动作), 并处于免提收听状态。 这些特殊呼叫业务服务 于企业或组织中的日常运作与管理。
目前, 现有的绝大部分特殊通信系统是基于时分复用 ( Time Division Multplexing, TDM ) 时隙交换的数字程控电话交换技术。 基于其它信令控制 协议(如 SIP ( Session Initiation Protocol, 会话初始化协议)协议、 H.323协议、 MGCP ( Media Gateway Control Protocol, 媒体网关控制协议)协议或 Q.931协 议)的特殊通信系统还没有面世, 这些信令控制协议都可以是基于 IP ( Internet Protocol, 互联网协议) 的协议。
TDM时隙交换技术的原理是, 主叫用户发出的话音经过釆样与模数转换 后, 变成一定长度的二进制码流, 然后二进制码流进入交换网片, 交换网片把 来自主叫侧的二进制码流交换到被叫侧的线路, 被叫侧对话音进行数模转换 后, 并将话音在被叫侧的话机上播放出来。
基于 TDM时隙交换的调度通信系统包括四个部分: 调度通信交换机、 管 理台、 调度台、 用户台。 下面描述基于 TDM时隙交换的调度通信系统的各个 组成部分。
调度通信交换机,用于交换来自用户侧的语音,实现各种特殊呼叫类业务, 可与其他通信系统相连。调度通信交换机通常是基于大规模和超大规模集成电 路的硬件系统, 或是单板上加载控制软件, 价格比较昂贵。
管理台,用于配置和管理调度通信交换机,管理台可以是商用工作站或服 务器。
调度台,用于通过调度通信交换机向用户台发送调度消息,以呼叫用户台。 所述的调度台可以是特殊定制的电话机, 该电话机上面有多个按键, 或是运行 在计算机(或工作站)上的软件, 该计算机(或工作站)通常连接有话筒和扬 士 3?- 尸 。
用户台,用于通过调度通信交换机接收调度台发送的调度消息。所述用户 台可以是一部普通的电话机。
上述基于 TDM时隙交换的调度通信系统可以出色地完成语音业务, 但这 种调度通信系统在通信过程中釆用数据包与企业内局域网所釆用的数据包格 式和标准不同 ,使该系统与其它系统(如企业或组织拥有的工业自动控制系统、 信息系统等等)的集成较为困难,这样,为了提高整个企业或组织的运营效率, 需要一种新的特殊呼叫类业务系统, 以利于与其它系统进行集成。
发明内容
本发明的实施例提供了一种实现特殊呼叫类业务的系统、装置和方法,符 合基于互联网协议的信令控制协议, 以利于与其它信息系统进行集成。
本发明实施例公开了一种实现特殊呼叫类业务的系统, 包括:
发起特殊呼叫类业务实体,用于发送带有业务类型标识的会话建立请求消 息; 所述业务类型标识用于指示特殊呼叫类业务的业务类型, 所述会话建立请 求消息符合基于互联网协议的信令控制协议;
特殊呼叫类业务处理装置,用于接收所述带有业务类型标识的会话建立请 求消息, 并根据所述业务类型标识确定的业务类型所对应的业务处理逻辑, 实 现特殊呼叫类业务。
本发明实施例还公开了一种特殊呼叫类业务处理装置, 包括: 接收单元, 用于接收所述发送单元发送的会话建立请求消息,所述会话建立请求消息携带 业务类型标识; 确定单元, 用于确定所述接收单元接收的会话建立请求消息的 业务类型标识所标识的业务类型; 存储单元, 用于存储业务处理逻辑信息, 所 述业务处理逻辑信息包括业务类型和与业务类型对应的业务处理逻辑;处理单 元,用于根据所述确定单元确定的业务类型和所述存储单元存储的业务处理逻 辑信息实现特殊呼叫类业务。
本发明实施例还公开了一种发起特殊呼叫类业务实体, 包括:
设置单元, 用于在会话建立请求消息中设置业务类型标识, 所述业务类型 标识用于指示特殊呼叫类业务的业务类型,所述会话建立请求消息符合基于互 联网协议的信令控制协议;
发送单元,用于向特殊呼叫类业务处理装置发送被所述设置单元设置的会 话建立请求消息, 所述会话建立请求消息包括业务类型标识。
本发明实施例还公开了一种实现特殊呼叫类业务的方法, 包括:
接收会话建立请求消息,所述会话建立请求消息符合基于互联网协议的信 令控制协议且携带业务类型标识;
确定所述会话建立请求消息的业务类型标识所标识的业务类型; 根据所述业务类型对应的业务处理逻辑, 实现特殊呼叫类业务。
在本发明实施例中,通过基于 IP的信令控制协议实现了特殊呼叫类业务, 由于目前企业的大多数信息系统都是基于 IP的, 所以, 本发明实施例的实现 特殊呼叫类业务的系统能与大多数信息系统方便地融合,从而使得本发明实施 例的实现特殊呼叫类业务的方法和系统可方便地与企业或组织的其它信息系 统进行集成, 进而可根据所述其它信息系统的信息触发特殊呼叫类业务,使得 所述其它信息系统的信息得到了更有效地利用,为提高企业的运作效率提供了 有力手段。
附图说明
图 1示出了本发明实施例一的实现特殊呼叫类业务的系统组网图; 图 2示出了本发明实施例一的特殊呼叫类业务处理装置示意图;
图 3示出了本发明实施例二的实现强插业务的流程图;
图 4示出了本发明实施例二的将强插业务的主叫方加入会场的流程图; 图 5示出了本发明实施例二的将强插业务的被叫方加入会场的流程图; 图 6示出了本发明实施例二的实现强拆业务流程图;
图 7示出了本发明实施例二的实现组呼业务流程图;
图 8示出了本发明实施例二的将组呼业务的被叫方加入会场的流程图; 图 9示出了本发明实施例三的实现紧急广播业务流程图。
具体实施方式
为了便于本领域一般技术人员理解和实现本发明,现结合附图对本发明的 实施例进行详细说明。
实施例一
本实施例公开了一种实现特殊呼叫类业务的系统,该系统基于 IP的信令控 制协议(例如: SIP协议、 H.323协议、 MGCP协议或 Q.931协议) , 下面以 SIP 协议为例加以说明。
如图 1所示, 所述实现特殊呼叫类业务的系统包括: 网际协议用户交换机 ( Internet Protocol Private Branch eXchange, IP-PBX ) 10、 特殊呼叫类业务处 理装置 11、 媒体资源服务器 12、 管理台 (图中未示出 )、 发起特殊呼叫类业务 实体 13、 用户台 14。 下面参照图 1描述本发明实施例的实现特殊呼叫类业务的 系统。
IP-PBX10, 用于用户注册, 并接收发起特殊呼叫类业务实体的会话建立 请求消息, 提供所述会话建立请求消息的分发和呼叫路由。 IP-PBX10可以是 商用服务器,也可以是单板形式的通信设备, 所述会话建立请求消息携带有业 务类型标识, 所述业务类型标识可以标识强插业务、 强拆业务、 组呼业务等。
特殊呼叫类业务处理装置 11 , 用于接收 IP-PBX10转发的会话建立请求消 息, 根据所述会话建立请求消息的业务类型通过 IP-PBX10和媒体资源服务器 12实现特殊呼叫类业务,特殊呼叫类业务处理装置 11还用于定义与所述业务类 型对应的业务处理逻辑。 特殊呼叫类业务处理装置 11可以是一个支持 SIP协议 的应用服务器(Application Server, AS )。 特殊呼叫类业务处理装置 11可以与 IP-PBX10, 应用服务器、 特殊终端 (调度台、 话务台、 定制终端等)合设在 一起, 也可以部署在另外的服务器或单板上。
媒体资源服务器 (Media Resource Server, MRS ) 12, 用于在特殊呼叫类 业务处理装置 11的控制下将多个用户台、 发起特殊呼叫类业务实体的话音和 / 或视频数据进行混合, 并将混合的话音和 /或视频数据发给用户台和 /或发起特 殊呼叫类业务实体, 或者对音频和 /或视频进行录制。 媒体资源服务器 12可以 是基于数字信号处理器 (Digital Signal Processor, DSP ) 的单板, 也可以是运 行某种软件的 CPU。在特殊呼叫类业务中, 并不是所有的业务都需要媒体资源 服务器 12的参与。 强插业务、 组呼业务之类需要利用媒体资源服务器实现; 强 拆业务、 监听业务可以利用媒体资源服务器实现; 而紧急广播业务、 呼叫级别 业务不需要媒体资源服务器的参与。
管理台, 配置和管理调度通信系统,所述管理台可以是商用计算机或工作 站。
发起特殊呼叫类业务实体 13 , 其包括: 设置单元, 用于在会话建立请求消 息中设置业务类型标识,所述业务类型标识用于指示特殊呼叫类业务的业务类 型, 所述会话建立请求消息基于 SIP协议、 H.323协议、 MGCP协议或 Q.931协 议; 发送单元, 用于通过 IP-PBX10向特殊呼叫类业务处理装置 11发送会话建 立请求消息, 所述会话建立请求消息包括业务类型标识。发起特殊呼叫类业务 实体 13可以是特殊定制的 SIP协议电话机, 或者是运行在计算机或工作站上软 件形式的发起特殊呼叫类业务实体(这时该计算机或工作站应配置有话筒和扬 声器) , 或者是调度台、 话务台、 呼叫中心坐席、 定制终端、 应用服务器、 IP PBX。
用户台 14, 用于被调度的用户终端, 可以是普通的 SIP电话机, 也可以是 传统的模拟电话机, 所述模拟电话机通过接入网关 (Access Gate, AG )设备 与 IP-PBX10互连。
如图 2所示, 特殊呼叫类业务处理装置包括:
接收单元 21 ,用于接收所述会话建立请求消息,所述会话建立请求消息携 带业务类型标识;
确定单元 22,用于确定所述会话建立请求消息的业务类型标识所标识的业 务类型;
存储单元 23 ,用于存储业务处理逻辑信息,所述业务处理逻辑信息包括业 务类型和与业务类型对应的业务处理逻辑; 更新单元 24,用于更新存储单元 23存储的业务处理逻辑信息,所述更新存 储单元存储的业务处理逻辑信息包括:在存储单元 23中增加新定义业务处理逻 辑信息、 和 /或修改存储单元 23中已有的业务处理逻辑信息;
处理单元 25 ,用于根据确定单元 22确定的业务类型和存储单元 23存储的业 务处理逻辑信息实现特殊呼叫类业务。
应该注意的是, 在上述的系统中, 特殊呼叫类业务处理装置 11、媒体资源 服务器 12、 发起特殊呼叫类业务实体 13、 用户台 14之间的通信可以直接相连, 而不必通过 IP-PBX10。 另外, 在会话建立请求消息传输过程中, 不能识别特 殊业务标识的中间实体对会话建立请求消息进行透传。
实施例二
本实施例公开了利用媒体资源服务器实现特殊呼叫类业务(如强插业务、 强拆业务、 组呼业务)的方法, 该方法包括: 接收会话建立请求消息, 所述会 话建立请求消息携带业务类型标识;确定会话建立请求消息的业务类型标识所 标识的业务类型;根据确定的业务类型利用媒体资源服务器实现特殊呼叫类业 务。
结合实施例一的系统, 具体而言, 所述特殊呼叫类业务可由发起特殊呼叫 类业务实体发起, 即发起特殊呼叫类业务实体通过 IP-PBX向特殊呼叫类业务 处理装置发送会话建立请求消息, 所述会话建立请求消息携带业务类型标识, 所述业务类型可以为强插业务、 强拆业务、 组呼业务等。 特殊呼叫类业务处理 装置收到来自发起特殊呼叫类业务实体的会话建立请求消息后,通过会话建立 请求消息所携带的业务类型标识来触发特殊呼叫类业务。所述会话建立请求消 息在 SIP协议中可以是扩展的 INVITE (邀请)消息, 或者自定义的消息。 在实 现特殊呼叫类业务的方法中,可由媒体资源服务器提供语音混音和视频混合资 源。 对 INVITE请求的扩展方式可以是以下几种(或其它与此类似的方式) : 1 )在 INVITE请求的 To头域中增加新的属性, 例如增加 type属性, 该属性 用于标识特殊呼叫类业务的业务类型;
2 )在 INVITE请求中增加新的头域, 例如增加 Type头域, 该头域用于标识 特殊呼叫类业务的业务类型;
3 )在 SIP消息体(会话描述协议( Session Descriptive Protocol, SDP ) 消 息) 中增加新的属性, 该属性用于标识特殊呼叫类业务的业务类型。 下面以在 INVITE消息中增加头域为例来描述发送会话建立请求消息的方 法。
例如,可通过扩展 INVITE消息来发送会话建立请求消息以实现强插业务, 即在 INVITE消息中增加业务类型标识, 并将业务类型标识设置为强插, 具体 扩展方式可在 To头域中加入参数指明呼叫类型为强插。
实现强插业务的会话建立请求消息举例如下:
INVITE sip:50719@10.166.50.51 SIP/2.0
From: <sip:50718@10.166.50.51>;tag=lc27997
To: <sip:50719@10.166.50.51>;type=强插
Call-Id: s_2402_4a4e2603e89f ... ...
同理,可通过扩展 INVITE信令来发送会话建立请求消息以实现强拆业务, 即在 INVITE信令中增加业务类型标识, 并将业务类型标识设置为强拆, 具体 扩展方式可在 To头域中加入参数指明呼叫类型为强拆。
实现强拆业务的会话建立请求消息举例如下:
INVITE sip:50719@10.166.50.51 SIP/2.0
From: <sip:50718@10.166.50.51>;tag=lc27997
To: <sip:50719@10.166.50.51>;type=强拆
Call-Id: s_2402_4a4e2603e89f ... ...
同理,可通过扩展 INVITE信令来发送会话建立请求消息以实现组呼业务, 即在 INVITE信令中增加业务类型标识, 并将业务类型标识设置为组呼, 将对 端统一资源标识符(Uniform Resource Identifier, URI )设置为组的 ID, 具体 扩展方式可在 To头域中加入参数指明呼叫类型为组呼。
实现组呼业务的会话建立请求消息举例如下:
INVITE sip:#001#@10.166.50.51 SIP/2.0
From: <sip:50718@10.166.50.51>;tag=lc27997
To: <sip:#001#@10.166.50.51>;type=组呼
Call-Id: s_2402_4a4e2603e89f ... ...
上述扩展会话建立请求消息方法同样适用于 H.323协议、 MGCP协议或 Q.931协议, 例如, 在 H.323协议的 Setup消息中增加属性, 并使该属性用于标 识特殊呼叫类业务的业务类型; 在 MGCP协议的 CRCX消息中增加属性, 并使 该属性用于标识特殊呼叫类业务的业务类型; 在 Q.931协议的 Setup消息中增加 属性, 并使该属性用于标识特殊呼叫类业务的业务类型。
当特殊呼叫类业务处理装置接收到会话建立请求消息后,通过会话建立请 求消息中的业务类型标识实现业务类型所对应的逻辑。下面分别按业务类型对 实现特殊呼叫类业务的方法进行描述。
当业务类型为强插业务时, 其实现流程如图 3所示。 其中, 4叚设 A为强插 的主叫方, B和 C为强插的被叫方, A可以对应发起特殊呼叫类业务实体(下面 以调度台为例) , B和 C可以对应发起特殊呼叫类业务实体或用户台。
步骤 1、 查询强插的被叫方的会话状态, 并设置一个定时器, 然后等待响 应。
步骤 2、 等待响应。
当响应为定时器超时时, 转步骤 6;
当响应为空闲时, 直接与被叫方通话, 然后转步骤 6;
当响应为忙时, 执行步骤 3。
步骤 3、 将强插的主叫方 A加入会场, 并设置一个定时器, 然后等待响应。 当加入失败或定时器超时时, 转步骤 6;
当加入成功时, 执行步骤 4。
步骤 4、 将强插的被叫方 B加入会场, 并设置一个定时器, 然后等待响应。 当加入失败或定时器超时时, 转步骤 6;
当加入成功时, 执行步骤 5。
步骤 5、 将强插的被叫方 C加入会场, 并设置一个定时器, 然后等待响应。 当加入失败或定时器超时时, 转步骤 6;
当加入成功时, 结束, 返回成功消息。
步骤 6、 结束。
在上述的强插业务的步骤中,将强插的主叫方加入会场和将强插的被叫方 转移至所述会场两个过程可由下述流程实现。
将强插的主叫方加入会场的流程如图 4所示, 包括以下步骤: 步骤 31、 调度台 A向特殊呼叫类业务处理装置发送第一邀请(Invite ( offer 1 ) )消息, Invite ( offer 1 )消息包括调度台 A的 SDP信息, SDP信息中带有调 度台 A的 IP地址、 支持的编 /解码器等信息。
步骤 32、 特殊呼叫类业务处理装置向调度台 A返回 180消息 (即返回给调 度台 A的振铃响应 ) 。
步骤 33、特殊呼叫类业务处理装置向媒体资源服务器发送第一邀请(Invite (offer 1) ) 消息, Invite (offer 1)消息中带有调度台 A的 IP地址、 支持的编 /解码 器等信息。
步骤 34、媒体资源服务器收到 Invite (offer 1)消息后, 向特殊呼叫类业务处 理装置返回 200 OK ( answer 2 ) (响应)消息。 所述响应中包含媒体资源服务 器的 SDP信息, 即媒体资源服务器的 IP地址、 支持的编 /解码器等信息。
步骤 35、 特殊呼叫类业务处理装置将带有媒体资源服务器 SDP信息的 200 OK消息发送给调度台 A。
步骤 36、 特殊呼叫类业务处理装置向媒体资源服务器发送 ACK (确认) 消息。
步骤 37、 调度台 A向特殊呼叫类业务处理装置发送 ACK (确认) 消息。 经过上述流程, 调度台 A得到媒体资源服务器的 SDP, 媒体资源服务器也 得到了调度台 A的 SDP, 这样, 媒体资源服务器可将调度台 A加入到某一会场 中, 以便彼此进行通信。
将强插的被叫方转移至所述会场的流程如图 5所示, 包括以下步骤: 步骤 41、 特殊呼叫类业务处理装置先向媒体资源服务器发送第二邀请 ( Invite ) 消息, 所述 Invite消息不携带特殊呼叫类业务处理装置的 SDP信息。
步骤 42、 媒体资源服务器接收到 Invite消息后, 向特殊呼叫类业务处理装 置发送 200响应消息, 所述 200响应消息携带了媒体资源服务器的 SDP。
步骤 43、 特殊呼叫类业务处理装置向用户台 B发送第一邀请 ( Invite
( offer 1 ) )消息,把媒体资源服务器的 SDP发送给用户台 B。由于 Invite ( offer 1 ) 消息是特殊呼叫类业务处理装置第二次发出 Invite消息, 所以也将该 Invite ( offerl ) 消息也称作 Re-Invite消息。
步骤 44、 用户台 B向特殊呼叫类业务处理装置发送 200 0K消息, 所述 200 OK消息携带用户台 B的 SDP。
步骤 45、 特殊呼叫类业务处理装置得到用户台 B的 SDP后, 向媒体资源服 务器发送带有用户台 SDP的 ACK响应消息。
步骤 46、 特殊呼叫类业务处理装置向用户台 B发送 ACK消息。
经过上述步骤后, 用户台 B得到媒体资源服务器的 SDP, 媒体资源服务器 也得到了用户台 B的 SDP, 这样, 就把用户台 B从原来的通话中改向到了媒体 资源服务器的会场中。
在步骤 41-46中, 仅描述了将强插业务中一个用户 (用户台 B )加入到会场 的流程。 对于强插业务中另一用户 (用户台 C ) , 可基于同样的流程加入到会 场中。
当业务类型为强拆业务时, 其实现流程如图 6所示。 其中, 4叚设 A为强拆 的主叫方, B和 C为强拆的被叫方, A可以对应发起特殊呼叫类业务实体(下面 以调度台为例) , B和 C可以对应发起特殊呼叫类业务实体或用户台。
步骤 51、 查询强拆的被叫方的会话状态, 并设置一个定时器, 然后等待响 应。
步骤 52、 等待响应。
当响应为定时器超时时, 转步骤 56;
当响应为空闲时, 转步骤 56;
当响应为忙时, 执行步骤 53。
步骤 53、将强拆的主叫方 A加入会场,并设置一个定时器, 然后等待响应。 当加入失败或定时器超时时, 转步骤 56;
当加入成功时, 执行步骤 54。
步骤 54、将强拆的被叫方 B加入会场, 并设置一个定时器, 然后等待响应。 当加入失败或定时器超时时, 转步骤 56;
当加入成功时, 执行步骤 55。
步骤 55、 将强拆的被叫方 C去活, 即直接向被叫方 C发送 Bye消息即可, 然 后等待响应。
当去活失败或定时器超时时, 转步骤 56;
当去活成功时, 结束, 返回成功消息。 步骤 56、 结束。
当业务类型为组呼业务时, 其实现步骤如下。 如图 7所示, 下面描述组呼 业务的实现方法, 其中, H没 A为组呼的主叫方, B为组呼的被叫方, A可以对 应发起特殊呼叫类业务实体(下面以调度台为例) , B可以对应发起特殊呼叫 类业务实体或用户台。
步骤 61、 查询组呼的被叫方的会话状态, 并设置一个定时器, 然后等待响 应。
步骤 62、 等待响应。
当响应为定时器超时时, 转步骤 66;
当响应为空闲时, 然后转步骤 64;
当响应为忙时, 执行步骤 63。
步骤 63、 将组呼被叫方 B向另一会场转移, 并设置一个定时器, 然后等待 口向应。
当转移失败或定时器超时时, 进行错误处理, 执行步骤 66;
当转移成功时, 执行步骤 66。
步骤 64、将组呼的被叫方 B加入会场, 并设置一个定时器, 然后等待响应。 当加入失败或定时器超时时, 进行错误处理, 转步骤 66;
当加入成功时, 执行步骤 66。
步骤 66、 结束。
在上述的实现组呼业务的步骤中, 包括将组呼的被叫方加入会场的流程。 将组呼的被叫方 (即, 用户台 B )加入会场的流程如图 8所示, 包括以下 步骤:
步骤 71、 特殊呼叫类业务处理装置先向媒体资源服务器发送第二邀请 ( Invite ) 消息, 所述 Invite消息不携带特殊呼叫类业务处理装置的 SDP。
步骤 72、 媒体资源服务器接收到第二邀请(Invite ) 消息后, 向特殊呼叫 类业务处理装置发送 200响应消息,所述 200响应消息携带了媒体资源服务器的 SDP。
步骤 73、 特殊呼叫类业务处理装置向用户台 B发送第一邀请 (Invite ( offerl ) ) 消息, 把媒体资源服务器的 SDP发送给用户台 B。 步骤 74、 用户台 B向特殊呼叫类业务处理装置发送 200 OK消息, 所述 200 OK消息携带用户台 B的 SDP信息。
步骤 75、 特殊呼叫类业务处理装置得到用户台 B的 SDP信息后, 向媒体资 源服务器发送带有用户台 SDP的 ACK响应消息。
步骤 76、 特殊呼叫类业务处理装置向用户台 B发送 ACK消息。
经过上述步骤后, 用户台 B得到媒体资源服务器的 SDP信息, 媒体资源服 务器也得到了用户台 B的 SDP信息, 这样, 就把用户台 B从原来的通话中改向 到了媒体资源服务器的会场中。
实施例三
本实施例公开了不需要媒体资源服务器实现特殊呼叫类业务(以紧急广播 业务为例)的方法, 该方法包括: 接收会话建立请求消息, 所述会话建立请求 消息携带业务类型标识;确定会话建立请求消息的业务类型标识所标识的业务 类型; 根据确定的业务类型实现特殊呼叫类业务。
结合实施例一的系统, 具体而言, 所述紧急广播业务可由发起特殊呼叫类 业务实体(以调度台为例)发起, 即发起特殊呼叫类业务实体通过 IP-PBX向 特殊呼叫类业务处理装置发送会话建立请求消息,所述会话建立请求消息携带 业务类型标识, 所述业务类型可以为紧急广播业务标识。特殊呼叫类业务处理 装置收到来自调度台的会话建立请求消息后,通过会话建立请求消息所携带的 紧急广播标识来触发紧急广播业务。 所述会话建立请求消息在 SIP协议中可以 是扩展的 INVITE消息, 或者自定义的消息。 对 INVITE请求的扩展方式参见实 施例二。 下面以 INVITE消息为例参照图 9来描述实现紧急广播业务的过程。
步骤 91、 当紧急情况发生时, 管理人员利用调度台通过 IP-PBX向特殊呼 叫类业务处理装置发送邀请 ( Invite ) 消息, 所述邀请 ( Invite ) 消息携带紧急 广播业务标识。
步骤 92、 特殊呼叫类业务处理装置接收到邀请(Invite ) 消息后, 发现业 务类型标识为紧急广播业务,根据紧急广播业务处理逻辑获得本次呼叫的用户 台号码, 然后通过 IP-PBX向所有用户台发送邀请 ( Invite ) 消息, 所述邀请 ( Invite ) 消息携带紧急广播业务标识。
步骤 93、 用户台收到带有紧急广播业务标识的邀请(Invite ) 消息后, 启 用免提功能。
步骤 94、 用户台向调度台返回 200 OK应答消息。
步骤 95、这样在调度台和多个用户台之间的紧急广播业务建立成功。调度 台可向用户台发送话音。
实施例二和实施例三仅描述了部分特殊呼叫类业务:强插业务、强拆业务、 组呼业务、 紧急广播业务, 对于其它特殊呼叫类业务(如监听业务、 呼叫级别 业务) , 其实现方法与上述方法类似, 在此不再赘述。
在本发明实施例的实现特殊呼叫类业务系统和方法中,通过对会话建立请 求消息的结构进行简单扩展, 满足了监听等特殊呼叫类业务对通信协议的需 求。 具体而言, 从消息结构来看, 本发明实施例只对现有基于 IP的信令控制协 议(SIP协议、 H.323协议、 MGCP协议或 Q.931协议) 的会话建立请求进行了 简单扩展; 由于基于 IP的信令控制协议是基于 IP的协议, 且与通信协议完全兼 容,不仅可使本发明实施例的系统和方法能与通信系统中其它通信实体很好地 对接, 还可以方便地与其他系统集成在一起, 能提高企业运作的效率; 扩展内 容很少, 对于已经拥有成熟基于 IP的信令控制协议栈的通信设备厂商而言, 开 发成本较低。
另外, 发起特殊呼叫类业务实体可以是自动控制系统的控制台。 这样, 在 会话建立请求消息的业务类型中,所述业务类型还可以为自动控制系统故障标 识, 所述自动控制系统故障标识包括自动控制系统标识和故障号, 当自动控制 系统出现异常情况时, 自动控制系统控制台会向特殊呼叫类业务处理装置发送 带有自动控制系统故障标识的会话建立请求消息,当特殊呼叫类业务处理装置 接收到业务类型为自动控制系统标识的会话建立请求消息后,可根据自动控制 系统标识和预定规则对该故障进行处理(如发起呼叫), 从而方便了企业的管 理。
综上所述,本发明实施例的特殊呼叫类业务系统可方便地与自动控制系统 集成在一起, 可提高企业的管理效率。
对于以 H.323、 MGCP或 Q.931等协议为核心的通信系统, 釆用类似本发明 实施例的方式对基于 IP的信令控制协议进行扩展, 也可以以较低设计、 开发成 本支持监听等特殊呼叫类业务。 虽然通过实施例描绘了本发明,但本领域普通技术人员知道,在不脱离本 发明的精神和实质的情况下, 就可使本发明有许多变形和变化, 本发明的范围 由所附的权利要求来限定。

Claims

权 利 要 求
1、 一种实现特殊呼叫类业务的系统, 其特征在于, 包括:
发起特殊呼叫类业务实体,用于发送带有业务类型标识的会话建立请求消 息; 所述业务类型标识用于指示特殊呼叫类业务的业务类型, 所述会话建立请 求消息符合基于互联网协议的信令控制协议;
特殊呼叫类业务处理装置,用于接收所述带有业务类型标识的会话建立请 求消息, 并根据所述业务类型标识确定的业务类型所对应的业务处理逻辑, 实 现特殊呼叫类业务。
2、根据权利要求 1所述的实现特殊呼叫类业务的系统, 其特征在于, 所述 发起特殊呼叫类业务实体包括:
设置单元, 用于在会话建立请求消息中设置所述业务类型标识; 发送单元, 用于发送被所述设置单元设置的会话建立请求消息。
3、根据权利要求 1所述的实现特殊呼叫类业务的系统, 其特征在于, 所述 特殊呼叫类业务处理装置包括:
接收单元, 用于接收所述发送单元发送的会话建立请求消息;
确定单元 ,用于确定所述接收单元接收的会话建立请求消息的业务类型标 识所标识的业务类型;
存储单元,用于存储业务处理逻辑信息,所述业务处理逻辑信息包括业务 类型和与业务类型对应的业务处理逻辑;
处理单元,用于根据所述确定单元确定的业务类型和所述存储单元存储的 业务处理逻辑信息实现特殊呼叫类业务。
4、 根据权利要求 1至 3任一项所述的实现特殊呼叫类业务的系统, 其特征 在于, 所述发起特殊呼叫类业务实体是自动控制系统的控制台。
5、 根据权利要求 1至 3任一项所述的实现特殊呼叫类业务的系统, 其特征 在于, 所述系统还包括:
媒体资源服务器,用于在所述特殊呼叫类业务处理装置的控制下为所述特 殊呼叫类业务提供媒体流。
6、 一种特殊呼叫类业务处理装置, 其特征在于, 包括:
接收单元, 用于接收来自发起特殊呼叫类业务实体的会话建立请求消息, 所述会话建立请求消息携带业务类型标识;
确定单元,用于根据所述接收单元接收的会话建立请求消息所携带的业务 类型标识, 确定所述会话建立请求消息所标识的业务类型;
存储单元,用于存储业务处理逻辑信息,所述业务处理逻辑信息包括业务 类型和与业务类型对应的业务处理逻辑;
处理单元,用于根据所述确定单元确定的业务类型和所述存储单元存储的 业务处理逻辑信息实现特殊呼叫类业务。
7、根据权利要求 6所述的特殊呼叫类业务处理装置, 其特征在于, 所述特 殊呼叫类业务处理装置还包括:
更新单元, 用于更新所述存储单元存储的业务处理逻辑信息。
8、 一种发起特殊呼叫类业务实体, 其特征在于, 包括:
设置单元, 用于在会话建立请求消息中设置业务类型标识, 所述业务类型 标识用于指示特殊呼叫类业务的业务类型,所述会话建立请求消息符合基于互 联网协议的信令控制协议;
发送单元,用于向特殊呼叫类业务处理装置发送被所述设置单元设置的会 话建立请求消息, 所述会话建立请求消息包括业务类型标识。
9、 一种实现特殊呼叫类业务的方法, 其特征在于, 包括:
接收会话建立请求消息,所述会话建立请求消息符合基于互联网协议的信 令控制协议且携带业务类型标识;
确定所述会话建立请求消息的业务类型标识所标识的业务类型; 根据所述业务类型对应的业务处理逻辑, 实现特殊呼叫类业务。
10、 根据权利要求 9所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述特殊呼叫类业务包括以下至少一种: 监听、 强插、 强拆、 组呼、 携带呼叫级 另1 紧急广播, 设置所述业务类型标识对应于所述特殊呼叫类业务的类型。
11、根据权利要求 10所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述业务类型标识表示自动控制系统故障, 所述实现特殊呼叫类业务包括: 根据自动控制系统标识和预定规则对该故障进行处理。
12、根据权利要求 10所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述业务类型标识表示强插业务, 所述实现特殊呼叫类业务包括: 查询被叫方的通话 态;
当被叫方的通话状态为忙时,通过媒体资源服务器将所述强插业务的主叫 方加入会场, 将所述强插业务的被叫方转移至所述会场。
13、根据权利要求 12所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述将强插业务的主叫方加入会场包括:
向所述媒体资源服务器发送带有所述主叫方会话描述信息的邀请消息; 接收并向所述主叫方返回带有所述媒体资源服务器会话描述信息的响应 消息。
14、根据权利要求 12所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述将强插业务的被叫方转移至所述会场包括:
向所述媒体资源服务器发送邀请消息;接收所述媒体资源服务器返回的带 有所述媒体资源服务器会话描述信息的响应消息;
向所述被叫方重新发送带有所述媒体资源服务器会话描述信息的邀请消 息;
接收并向所述媒体资源服务器返回带有所述被叫方会话描述信息的响应 消息。
15、根据权利要求 10所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述业务类型标识表示强拆业务, 所述实现特殊呼叫类业务包括:
查询被叫方的通话 态;
当所述被叫方的通话状态为忙时,通过媒体资源服务器将主叫方和所述被 叫的一方加入会场、 去活所述被叫的另一方。
16、根据权利要求 10所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述业务类型标识表示组呼业务, 所述实现特殊呼叫类业务包括:
查询被叫方的通话 态;
当被叫方的通话状态为忙时,通过媒体资源服务器将被叫方转移到组呼会 场;
当被叫方的通话状态为空闲时,通过媒体资源服务器将被叫方加入所述组 呼会场。
17、根据权利要求 16所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述通过媒体资源服务器将被叫方转移到组呼会场包括:
向所述媒体资源服务器发送邀请消息;
接收所述媒体资源服务器返回的带有所述媒体资源服务器会话描述信息 的响应消息;
向所述被叫方发送带有所述媒体资源服务器会话描述信息的邀请消息; 接收并向所述媒体资源服务器返回带有被叫方会话描述信息的响应消息。
18、 根据权利要求 9所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述会话建立请求消息为基于会话初始化协议的 INVITE请求消息或自定义消 息。
19、 根据权利要求 18所述的实现特殊呼叫类业务的方法, 其特征在于, 利用所述 INVITE请求消息的头域标识所述特殊呼叫类业务的业务类型; 或者
利用所述 INVITE请求消息中的属性标识所述特殊呼叫类业务的业务类 型; 或者
利用所述 INVITE请求消息的会话描述协议消息体中的属性标识特殊呼叫 类业务的业务类型。
20、 根据权利要求 9所述的实现特殊呼叫类业务的方法, 其特征在于, 所 述方法还包括: 在所述会话建立请求消息传输过程中, 不能识别所述特殊业务 标识的中间实体对所述会话建立请求消息进行透传。
PCT/CN2008/070403 2007-03-26 2008-03-04 Système, équipement et procédé de mise en œuvre de services d'appel spéciaux WO2008116408A1 (fr)

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