System for communicating with an internet protocol multimedia subsystem network

摘要

A system for communicating with an Internet Protocol Multimedia Subsystem (IMS) network is provided. A system that incorporates teachings of the present disclosure may include, for example, an intermediate node having a controller element to receive from a non IP Multimedia Subsystem (IMS) compliant node a Session Initiation Protocol (SIP) message having a calling party number and a called party number, and insert in the SIP message a request that instructs a receiving IMS-compliant node to bypass validation of the calling party number. Additional embodiments are disclosed.

主权项

1. A computer-readable storage device, comprising instructions that, when executed by a controller cause the controller to perform operations comprising:
receiving, from a server, a session initiation protocol message having a calling party number and a called party number, wherein the session initiation protocol message corresponds to a request from a first communication device to initiate communications with a second communication device by way of an internet protocol multimedia subsystem network according to the called party number; determining from a first identifier associated with the server whether the server is known to be non-compliant with protocol standards used by the internet protocol multimedia network; if the server is determined to be known to be non-compliant, submitting a first query with the called party number to a telephone number mapping database; if the server is determined to be not known to be non-compliant, determining whether the session initiation protocol message comprise a bypass instruction; if the session initiation protocol message is determined to comprise a bypass instruction, submitting a second query with the called party number to the telephone number mapping database; if the session initiation protocol message is determined to not comprise a bypass instruction:
sending a request to a home subscriber server for first credentials associated with the calling party number;receiving the first credentials associated with the calling party number from the home subscriber server;comparing the first credentials with second credentials that are received with the session initiation protocol message to determine if the first communication device is authorized for the internet protocol multimedia subsystem network; andsubmitting a third query with the called party number to the telephone number mapping database; receiving a uniform resource identifier from the telephone number mapping database responsive to one of the first query, the second query, or the third query; and transmitting a session initiation protocol invite message to a terminating serving call session control function server identified by the home subscriber server according to the uniform resource identifier for initiating of the communications between the first communication device and the second communication device.