Systems and methods for reducing signalling in an internet protocol telephony system

摘要

A telephony communication setup request sent from a telephony device to an element of an IP telephony system includes a first encrypted code that is generated using one or more data items that are specific to the telephony device. The element of the IP telephony system receiving the setup request obtains the same data items locally and creates a second encrypted code. If the second code matches the first encrypted code, the telephony device and/or the setup request are authenticated, and the element of the IP telephony system proceeds to setup the requested telephony communication.

主权项

1. A method, performed by a telephony device, for sending a telephony communication setup request to an element of an Internet protocol (IP) telephony system, comprising:
obtaining at least one data item that is associated with the telephony device, the at least one data item including a character representation of the time at which the telephony device last registered with the IP telephony system; encrypting the at least one data item to create an encrypted code; recording at least the encrypted code in a field of a telephony communication setup request; and sending the telephony communication setup request to the element of the IP telephony system.