With SIP 64K Data, Communication Manager controls the mechanism to enable the support of the RFC 4040 media service.

Communication Manager uses RFC 4040 Clear Mode data transport to support the media transport of ISDN traffic. The ISDN traffic is directed to a destination that is reached through a SIP trunk.

Associated with the SIP 64K Data field are two other fields, Redundancy and Packet Size (ms). Communication Manager communicates the values of the Redundancy and Packet Size (ms) fields to the media gateway so that the gateway properly operates with the DSP conversion of the TDM media into an IP media stream.

For more information about Redundancy and Packet Size (ms) fields, see Avaya Aura® Communication Manager Screen Reference.