Patent ID: 7835364

Claim:
A method comprising: receiving, at a first client endpoint in a domain, a plurality of contact addresses of endpoints that are in the domain; transmitting a first message to a second client endpoint in the domain based on the second client endpoint having been identified by a first contact address in the plurality of contact addresses, wherein the first message inquires as to whether at least one capability of providing a telecommunications feature is present in the plurality of endpoints, and wherein the at least one capability of providing the telecommunications feature comprises the plurality of endpoints ability to communicate above a predetermined quality-of-service level; receiving a second message from a member client endpoint of the plurality of endpoints, wherein the second message reports on the plurality of endpoints ability to communicate above the predetermined quality-of-service level; and transmitting a subscribe message to a designated client endpoint that is providing a first telecommunications feature being subscribed to using the subscribe message, wherein the subscribe message is transmitted based on the plurality of endpoints ability to communicate above the predetermined quality-of-service level reported on using the second message, wherein the designated client endpoint is in the plurality of endpoints.