Method, system and device for call processing

Abstract

A method, a system and a device for call processing are disclosed in the embodiments of the present invention. The method includes: obtaining, by a call initiator, address information of all or part of call managers in a network domain that processes a call, where the all or part of the call managers include a call manager that processes the call and is adjacent to the call initiator; sending, by the call initiator, a first call creating request message to an adjacent call manager according to the address information of the all or part of the call managers; and receiving, by the call initiator, a first call creating response message from the adjacent call manager. In the case that a service at a client side is required to be sent through multiple networks at a server side, inter-domain link selection and admission control may be implemented through section call processing.

What is claimed is: 
     
         1 . A call processing method, comprising:
 obtaining, by a call initiator, address information of all or part of call managers in network domains that process a call, wherein the all or part of the call managers comprise a call manager that processes the call and is adjacent to the call initiator;   sending, by the call initiator, a first call creating request message to an adjacent call manager according to address information of the adjacent call manager in the address information of the all or part of the call managers, the first call creating request message carries service information, performing, by the adjacent call manager, admission control according to the service information in the first call creating request message and locally configured policy information; and   receiving, by the call initiator, a first call creating response message from the adjacent call manager, wherein the first call creating response message is sent by the adjacent call manager in response to the first call creating request message.   
     
     
         2 . The call processing method according to  claim 1 , wherein the first call creating request message comprises the address information of the all or part of the call managers, the first call creating response message is sent by the adjacent call manager after the adjacent call manager sends a second call creating request message to a next call manager of the adjacent call manager and receives a second call creating response message from the next call manager; and the second call creating response message is sent by the next call manager in response to the second call creating request message; and
 the second call creating request message comprises address information of the next call manager, and further comprises address information of other call managers, except that of the adjacent call manager and the next call manager, in the address information of the all or the part of the call managers.   
     
     
         3 . The call processing method according to  claim 2 , wherein the adjacent call manager belongs to a first network domain, the next call manager belongs to a second network domain, and the second response message comprises available inter-domain link information between the first network domain and the second network domain. 
     
     
         4 . The call processing method according to  claim 1 , wherein the first call creating response message comprises available inter-domain link information between the network domains that process the call. 
     
     
         5 . The call processing method according to  claim 1 , wherein the address information of the all or part of the call managers is preconfigured, or the address information of the all or part of the call managers is obtained through calculation by the call initiator according to call service information of the call initiator and preconfigured topology information. 
     
     
         6 . A call processing method, comprising:
 obtaining, by a call manager, address information of all or part of call managers between the call manager in a network domain that processes the call and a call receiving node, wherein the all or part of the call managers comprise a next call manager adjacent to the call manager;   sending, by the call manager, a third call creating request message to the next call manager according to address information of the next call manager in the address information of the all or part of the call managers, wherein the third call creating request message comprises the address information of the all or part of the call managers; and   receiving, by the call manager, a third call creating response message from the next call manager, wherein the third call creating response message is sent by the next call manager in response to the third call creating request message;   wherein before the sending, by the call manager, the third call creating request message to the next call manager, the method further comprises: performing, by the call manager, admission control according to call service information and locally configured policy information.   
     
     
         7 . The call processing method according to  6 , wherein
 the third call creating response message is sent by the next call manager after the next call manager sends a fourth call creating request message to an adjacent call manager of the next call manager and being close to a call terminator and receives a fourth call creating response message from the adjacent call manager; and the third call creating request message comprises address information of the adjacent call manager, and further comprises address information of other call managers, except that of the next call manager and the adjacent call manager, in the address information of the all or part of the call managers.   
     
     
         8 . The call processing method according to  claim 7 , wherein the next call manager belongs to a third network domain, the adjacent call manager belongs to a fourth network domain, and the fourth call creating response message comprises available inter-domain link info Ration between the third network domain and the fourth network domain. 
     
     
         9 . A call processing method, comprising:
 receiving a call creating request message carrying service information and sent by a call initiating node;   obtaining address information of a call manager in a second network domain that processes the call according to the service information and preconfigured topology information;   sending the call creating request message carrying the service information to the call manager of the second network domain;   receiving a call creating response message from the call manager of the second network domain, wherein the call creating response message comprises available link information of a call receiving node and a call identifier (CallID) of the second network domain, and the CallID of the second network domain is determined on the basis of the service information;   replacing the CallID of the second network domain in the call creating response message with a CallID of a first network domain, wherein the CallID of the first network domain is determined on the basis of the service information, and the second network domain accesses an information stream of the first network domain; and   sending the replaced call creating response message to the call initiating node.   
     
     
         10 . The call processing method according to  claim 9 , wherein after the receiving the call creating response message from the call manager of the second network domain, the method further comprises: recording a corresponding relation between the CallID of the first network domain and the CallID of the second network domain; and
 after sending the replaced call creating response message to a call initiator, the method further comprises:   receiving a connection creating request message sent by the call initiator, wherein the connection creating request message carries the service information and the CallID of the first network domain;   replacing the CallID of the first network domain in the connection creating request message with the CallID of the second network domain according to the corresponding relation between the CallID of the first network domain and the CallID of the second network domain, and sending the replaced connection creating request message to the second network domain; and   receiving a reservation message from the second network domain, and sending the reservation message to the call initiator.   
     
     
         11 . The call processing method according to  claim 10 , wherein before the receiving the connection creating request message sent by the call initiator, the method further comprises:
 recording a corresponding relation between the service information and the CallID of the first network domain; and   after receiving the connection creating request message sent by the call initiating node, the method further comprises:   determining whether service information corresponding to the CallID of the first network domain in the connection creating request message conforms to the service information carried in the connection creating request message; if yes, replacing the CallID of the first network domain in the connection creating request message with the CallID of the second network domain according to the corresponding relation between the CallID of the first network domain and the CallID of the second network domain; and sending the replaced connection creating request message to the second network domain.   
     
     
         12 . A call processing system, comprising a call initiating node, a call receiving node, and multiple call managers, wherein
 the call initiating node is adapted to send a call creating request message to request for creating a call from the call initiating node to the call receiving node; and   one of the call managers is adapted to receive the call creating request message carrying service information and sent by the call initiating node, perform admission control according to the service information and locally configured policy information, obtain address information of call managers of multiple network domains that process the call, determine an adjacent call manager that processes the call according to the address information, send the call creating request message to the adjacent call manager, receive a call creating response message from the adjacent call manager, and send the call creating response message to the call initiating node, wherein the call creating response message is sent by the adjacent call manager according to the received call creating request message.