Patent ID: 8605714
Filing Date: 2013-12-10
Classification: G06Q,H04L

Abstract:
1. A method performed by one or more network elements for establishing an internet-protocol (IP) communications session between a first communication device and a second communication device, the method comprising: receiving a request from the first communication device to invite the second communication device to participate in an IP communications session, the second communication device being identified in the request by a network identifier; relating the network identifier to a mobile IP (MIP) address of the second communication device and a second IP address, the second IP address indicating either a point-of-attachment of the second communication device to a wireless access network or a care-of-address of a domain of a wireless access network in which the second communication device is operating; and sending an invitation to the MIP address of the second communication device, the invitation including a MIP address of the first communication device and a first IP address, wherein the first communication device is configured to establish an IP connection for an IP communications session with the second communication device using the MIP address of the second communication device and the second IP address.