Patent ID: 8457116
Filing Date: 2013-06-04
Classification: H04L,H04M

Abstract:
1. An apparatus for enabling interworking of Circuit Switched (CS) video calls with video calls using IP multimedia protocols within a communication network, comprising: a media gateway (MGW); a media gateway control function (MGCF): wherein said apparatus is arranged to use Media Oriented Negotiation Acceleration (MONA) functionality to accelerate a set-up of video calls, wherein said MONA functionality further comprises at least one of the following MONA protocols: Media Preconfigured Channel (MPG) protocol, Accelerated Call Procedure (ACP) protocol, and Signaling Preconfigured Channel (SPC) protocol; wherein at least one of said three MONA protocols is handled in said MGCF and a remainder in said MGW and wherein at least two MONA protocols are available for enabling interworking of a CS video call with a video call using said IP multimedia protocol, a first one of said MONA protocols being preferred over a second one, or a third one of said MONA protocols, and wherein said MGCF is arranged to determine which MONA protocol or protocols to use for a particular call; wherein said apparatus is arranged to decide under certain conditions to perform a fallback from said first protocol to said second or, where provided, said third protocol; and wherein said first, second, and third protocols are different MONA protocols.