Patent ID: 7733821
Filing Date: 2010-06-08
Classification: H04L,H04M,H04W

Abstract:
1. A method for transporting a first and a second voice-over-internet-protocol (VoIP) stream between a Base Station Controller and a Media Gateway using at least a Real-Time Transport Protocol (RTP) protocol, comprising the steps of: pre-assigning a same User Datagram Protocol (UDP) port number to the Base Station Controller and the Media Gateway; selecting a first Circuit Identity Code for a first VoIP stream; selecting a second Circuit Identity Code for a second VoIP stream; inserting the first Circuit Identity Code into a field of a first RTP header; inserting the second Circuit Identity Code into a field of a second RTP header; multiplexing the first and second VOIP streams together; transmitting the first and second VoIP streams to the pre-assigned UDP port number at the Base Station Controller; wherein inserting the first Circuit Identify Code into the field of the first RTP header is for a first data packet of the first VoIP stream, and wherein inserting the second Circuit Identity Code into the field of the second RTP header is for a second data packet of the second VoIP stream; and wherein the field of the first RTP header and the field of the second RTP header comprise a Synchronization Source field having a 32-bit length, wherein inserting the first Circuit Identity Code into the field of the first RTP header and wherein inserting the second Circuit Identity Code into the field of the second RTP header both further comprise generating the Synchronization Source field using 16 lower significant bits of the 32-bit length field.