Patent ID: 8442190

Claim:
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; 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.