Patent ID: 8625602
Filing Date: 2014-01-07
Classification: H04L

Abstract:
1. A method of correlating different end-to-end data sessions, said method comprising: creating a globally unique correlation identifier during establishment of a first end-to-end data session between a first party and a second party, wherein the first party sends a first portion of the correlation identifier including a Call-ID and a From-Tag to the second party in a Same-Session header of a SIP INVITE message, and the second party adds a second, completing portion of the correlation identifier to the first portion and sends the completed correlation identifier to the first party in a SIP 200 OK message responsive to the SIP INVITE message, wherein the second portion includes a To-Tag which uniquely identifies the second party; storing the correlation identifier by the first and second parties in a mapping unit that maps correlation identifiers to session identifiers, said mapping unit being selected from a group consisting of a correlation table, a hash function, and a mapping function; and utilizing the correlation identifier to correlate with the first end-to-end data session, a second, independent end-to-end data session subsequently established by the first or second party.