Contacting one SIP Proxy server after another until address of called party is found, and updating any Proxy server which did not have the address.

摘要

An improvement in the design and operation of telecommunications networks is described in which when a caller's telecommunication terminal does not know the address of the called party's telecommunications terminal, the caller's telecommunication terminal contacts one database (Session Initiation Protocol (SIP) Proxy server) after another until the address of the called party's telecommunications terminal is found. Thereafter, one or more of the databases (Session Initiation Protocol (SIP) Proxy servers) that did not have the address of the called party's telecommunications terminal are populated with that information for future use. Embodiments of the invention include a method comprising receiving at a telecoms terminal a notice that a first database fails to comprise a mapping of a party to an address for the party in a telecoms network, transmitting from the telecoms terminal a request to a second database to populate the first database with a mapping of the party to an address for the party in the telecoms network.