Patent ID: 8488768

Claim:
A method of routing calls to a single service destination for multi-service users in a telecommunications network, each of the multi-service users having access to a plurality of telephony services including a first telephony service provided in a first service provider network, and a second, different, telephony service provided in a second, different service provider network, the method comprising: receiving, in the first service provider network, an unanswered call directed to a first telephony party identifier associated with the first telephony service for a user; altering, in the first service provider network, first signaling information for the received unanswered call so as to modify destination information therein, the modified destination information for the call comprising a telephony party identifier associated with the single service destination, the single service destination being located in the second service provider network; adding, in the first service provider network, second signaling information for the received unanswered call so as to add a second telephony party identifier therein, the second signaling information for the received unanswered call comprising the second telephony party identifier, different to both the first telephony party identifier and the telephone party identifier associated with the single service destination, the second telephone party identifier being associated with the second telephony service for the user; and routing the received unanswered call to the single service destination located in the second telephony service network, on the basis of the altered first signaling information, to provide call completion to the single service destination, wherein the single service destination comprises a mailbox service.