Abstract: A method for transmitting data from a participant device in a session in an Internet Protocol (IP) system (100) is provided. The method comprises sending (405) one or more a first Real-time Transport Protocol (RTP) packet of the session to a first address. The method further comprises sending (410) one or more a first Real-time Transport Control Protocol (RTCP) packet of the session to a second address. The participant device sends the one or more a first RTP packet and the one or more a first RTCP packet.

Abstract: A method and system (500) for optimizing transcoder resources in a multimedia session is disclosed. The method includes receiving (202) one or more SDP offers. The method further includes filtering (204) out media types from each of the one or more SDP offers based on a rating range. Further, the method includes selecting (206) one of the media types from each of the one or more SDP offers. The method further includes allocating (208) resources of one or more transcoders for transcoding the one of the media types.

Abstract: A method for minimizing the number of transcoders needed to support group calls includes a first step of receiving a request from a call initiator to initiate a group call with a plurality of call targets. Next, a listing of call initiator vocoders supported by the call initiator is received. Then, a call invitation is sent to each of a plurality of networks associated with the call targets. Network responses are received from each of the plurality of networks. The network responses comprise one or more network supported vocoders. The responses from all of the plurality of networks are collected. Then, the amount of transcoder needed to support the group call is optimized by minimizing the number of call initiator vocoders and network supported vocoder pairs.