System and method for allocating session initiation protocol (SIP) identifications (IDs) to user agents

摘要

A communications system includes a Session Initiation Protocol (SIP) user agent. A server communicates with the SIP user agent and allocates an SIP ID for the user agent for subsequent communications using SIP. A database can be associated with the server and contain data relating to free SIP ID's that can be allocated to the SIP user agent and allocated SIP ID's.