Patent ID: 8369267
Filing Date: 2013-02-05
Classification: H04M,H04Q,H04W

Abstract:
1. A method of controlling establishment of a tandem free operation (TFO) for transfer of TFO frames including content frames between a first and a second transcoder unit without transcoding of the content frames, the method comprising the following steps: receiving, in context with a TFO request, information about a remotely used coded associated with a remote transcoder unit; determining, in response to the TFO request, if the remotely used coded meets a codec compatibly condition; transmitting, in case the remotely used coded does not meet the coded compatibly condition, a first transparent mode message indicating to in-path equipment a transparent mode for subsequent transparent TFO negotiation; transmitting, in the transparent mode, a TFO configuration frame indicating a local TFO codec list; and continuously transmitting TFO synchronization messages in the transparent mode.