Patent ID: 8867529

Claim:
A method, comprising: receiving a first portion of an identifier associated with a communication session involving a first endpoint that generated the first portion of the identifier; receiving a second portion of the identifier associated with the communication session involving a second endpoint that generated the second portion of the identifier, the communication session comprising a plurality of data flows including at least a first data flow originating at the first endpoint and a corresponding second data flow originating at the second endpoint; communicating a reservation request associated with a network resource to be allocated for the communication session, wherein the reservation request includes the first portion and the second portion of the identifier, wherein the first portion of the identifier combined with the second portion of the identifier form a combined identifier that uniquely identifies the plurality of data flows of the communication session between the first and second endpoints; and in response to the first data flow being purged, purging the corresponding second data flow based on the combined identifier, such that purging of the first data flow causes purging of at least one other data flow in a same communication session without causing purging of data flows in other communication sessions, wherein a transfer feature invocation by the first endpoint causes the first portion of the identifier to be changed to reflect a third endpoint being associated with the communication session.