System and method for media gateway negotiation

Patent metadata

Field	Value
Publication number	US-9112959-B2
Application number	US-20621808-A
Country	US
Kind code	B2
Filing date	Sep 8, 2008
Priority date	Sep 8, 2008
Publication date	Aug 18, 2015
Grant date	Aug 18, 2015

Abstract

A system and method of negotiating Media Gateways (MGs) between a plurality of call control nodes (CCNs). The system includes a first CCN which builds an original list of identifiers associated with at least one MG capable of being used in a call by the first CCN. The system also includes a second CCN for receiving the original list of identifiers from the first CCN. The second CCN removes from the original list any identifiers associated with any MG in the original list of identifiers which is not capable of being used in the call by the second CCN. The second CCN then forms a modified list of identifiers associated with at least one MG capable of being used in a call by the first CCN and the second CCN. The second CCN also selects a specified MG from the modified list and sends a first backward message from the second CCN to the first CCN identifying the specified MG. The first CCN may then validate that the specified MG is on the original list of identifiers and selects the specified MG for the call.

First claim

What is claimed:

1. A method of negotiating Media Gateways (MGs) between a plurality of call control nodes (CCNs), the method comprising the steps of:
a first CCN building an MG identifier list, each identifier in the MG identifier list being a Bearer Control Unit Identifier (BCU-ID) having at least one MG capable of being used in a call by the first CCN;
sending the MG identifier list to a second CCN;
the second CCN removing any identifiers, from the MG identifier list, assoc…

Assignees

• Kampmann Dirk
• Ericsson Telefon Ab L M

Inventors

• Kampmann Dirk

Classifications

• H04M7/127 Primary

  Electricity · mapped topic