LMSD SIP Call Progress Tone Interworking

The Oracle® Enterprise Session Border Controller supports Legacy Mobile Station Domain interworking tht allows SIP interworking with User Agents that support the 3GPP2 LMSD. The LMSD provides support for existing Mobile Stations in a network that supports IP bearers.

LMSD uses Alert-Info headers in a 180 Ringing response to an INVITE to indicate to a User Agent specific tones to generate locally by the UAC. Most User Agents that do not support LMSD will ignore the SDP in the Alert-Info and will not play ringback locally. The lmsd-interworking option allows for the system to suppress SDP in 180 Ringing, 486 Busy Here, and 503 Service Unavailable responses, so that the UAC plays local ringback.

There are no additional license requirements.