Cross-domain routing based on session initiation protocol information
AssigneeT-Mobile USA, Inc.
InventorsJason Cataquis, Dennis Romero
Life of this patent
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Abstract
Methods, devices, and system related to cross-domain routing of communication session requests in Internet Protocol (IP) Multimedia Subsystem are disclosed. In one example aspect, a method for routing a call initiated in an IP Multimedia Subsystem (IMS) includes receiving, by a Breakout Gateway Control Function (BGCF) node operating in a first domain, a first message from a caller requesting an establishment of a communication session. The method includes determining, by the BGCF node based on header information of the first message, that the caller is located in a second domain different than the first domain, and generating, by the BGCF node, a second message based on a preconfigured rule for the second domain.
Claims20
A method for routing a communication session initiated in an Internet Protocol (IP) Multimedia Subsystem (IMS), comprising:
- receiving, by a Breakout Gateway Control Function (BGCF) node operating in a first domain, a first message from a caller requesting an establishment of a call session;
- determining, by the BGCF node based on header information of the first message, that the caller is located in a second domain different than the first domain;
- and
- directing, by the BGCF node, the first message to a specific destination server based on a preconfigured rule for the second domain.
A device configured to operate in a first domain to route a call initiated in an Internet Protocol (IP) Multimedia Subsystem (IMS), the device comprising a processor that is configured to:
- receive a first message from a caller requesting an establishment of a communication session;
- determine, based on header information of the first message, that the caller is located in a second domain different than the first domain;
- and
- direct, without querying an Electronic Numbering (ENUM) server, the first message to a specific destination server to complete the establishment of the communication session based on a preconfigured rule,
- wherein the preconfigured rule represents an agreement between a first carrier of the first domain and a second carrier of the second domain, the agreement indicating that a subset of calls from the second domain is routed by the first domain.
A system for providing Internet Protocol (IP) Multimedia services to users, comprising:
- a first network node configured to receive a request from a caller in a first domain requesting an establishment of a communication session;
- and
- a second network node operating in a second domain configured to receive the request originated from the first network node, wherein the second network node is configured to:
- determine, based on header information of the request, that the caller is located in the first domain that is different than the second domain,
- generate, without querying an Electronic Numbering (ENUM) server, a new request based on a preconfigured rule,
- wherein the preconfigured rule represents an agreement between a first carrier of the first domain and a second carrier of the second domain, the agreement indicating that a subset of calls from the first domain is routed by the second domain,
- wherein the new request includes one or more routing digits that corresponds to a third network node, and
- route the new request to the third network node to establish the communication session.
Dependencies are inferred from the claim text.