| 摘要 |
A method and an apparatus for completing a circuit switched service call in an Internet Protocol network are disclosed. For example, the method receives a session request. The method queries an tElephone NUmbering Mapping (ENUM) server for a called party of the session request, and determines if at least one Naming Authority Pointer (NAPTR) resource record associated with the called party is received from the ENUM server. The method determines if a Session Initiation Protocol Universal Resource Identifier (SIP URI) is returned, if the at least one NAPTR resource record associated with the called party is received, and processing the session request using the SIP URI, if the SIP URI is returned. The method determines if the processing of the session request using the SIP URI resulted in a successful call completion and processes the session request using a telephone URI, if the processing of the session request using the SIP URI resulted in an unsuccessful call completion. |
| 主权项 |
1. A method for processing a session request in an Internet protocol network, comprising:
receiving, by a processor of a serving-call session control function, the session request from a calling party to a called party, wherein the called party uses a registered user endpoint device; querying, by the processor, a telephone numbering mapping server for the called party of the session request for a naming authority pointer resource record associated with the called party, wherein the naming authority pointer resource record comprises a session initiation protocol universal resource identifier and a telephone universal resource identifier; processing, by the processor, the session request using the session initiation protocol universal resource identifier, when the session initiation protocol universal resource identifier is returned in the naming authority pointer resource record associated with the called party that is received from the telephone numbering mapping server; determining, by the processor, whether the processing of the session request using the session initiation protocol universal resource identifier resulted in a successful call completion; and processing, by the processor, the session request using the telephone universal resource identifier, when the telephone universal resource identifier is returned and the processing of the session request using the session initiation protocol universal resource identifier resulted in an unsuccessful call completion. |
