Patent ID: 7181202

Claim:
A method in a communication system, the method comprising: initiation of a procedure for setting up a communication link between a first user equipment and a second user equipment via a communications network; signalling between the first user equipment and the second user equipment information regarding at least two modes of communication that can be used for communication via the communication link; signalling between the first user equipment and the second user equipment an indicator regarding a mode to be used for the communication; and initiating in at least in one of the user equipment a procedure for setting the mode of communication in accordance with the indicator wherein signaling of the indicator initiates a procedure to change from one mode of communication to another mode of communication during the communication, and wherein a first communication leg is formed between the first user equipment and a first element of the communication network and a second communication leg is formed between the second user equipment and a second element of the communication network, and wherein the first and second legs are synchronised in response to the signalling of said indicator regarding the mode to be used for the communication.