Patent ID: 7764637
Filing Date: 2010-07-27
Classification: H04L,H04W

Abstract:
1. A method of establishing session-based instant messaging communications between an initiating mobile device and a target mobile device that each supports a data packet-based communications service over a digital mobile network system, the method comprising: receiving a selected phone number from a user of the initiating mobile device corresponding to the target mobile device; generating a port number for the received selected phone number; opening a listening TCP end-point bound to the generated port number on the initiating mobile device to receive a TCP connection request from the target mobile device; embedding an invitation message comprising an IP address of the initiating mobile device and the generated port number in a telephony ringing signal transmitted to the target mobile device using the selected phone number; receiving a TCP connection request from the target mobile device at the listening TCP end-point on the initiating mobile device through the data packet-based communications service; and establishing a TCP connection through the data packet-based communications service for the session-based instant messaging session enabling transmission of a byte stream between the initiating mobile device and the target mobile device, wherein the TCP connection is established without use of a server that handles connection requests from multiple mobile devices.