Bridge call answer as Direct Media

Using the Bridge call answer as Direct Media feature, the calling party station can have direct media path with the bridge call appearance station of the called party station. The Bridge call answer as Direct Media feature is also known as the Bridge Direct Media feature.

For example, the calling party station is A, the called party station is B, and station B has a bridge call appearance on station C. If station A calls station B, and the call is answered by station C, then the call flow between station A and station C uses direct media.

Only 96x1 SIP endpoints support the Bridge call answer as Direct Media feature.

To enable the Bridge call answer as Direct Media feature, on page 19 of the FEATURE-RELATED SYSTEM PARAMETERS screen, set the Allow Bridge DM Answer field to y.

Call transfers

A user can keep any subsequent action on the second call, such as transfer, as direct media with the least occurrence of shuffling back to TDM resource. In case of consultative transfers, both the parties are directly on call if no Music on hold is applied and the call is shuffled in a single step. If Music on hold is ON, the held call is on TDM and the other call is direct media. When a telephone that is active on a call places the call on hold and the system does not have Music-on Hold configured, the hold operation is direct. In this case, Communication Manager transmits the SDP message received from the endpoint to indicate hold.

In case of unattended transfers, regardless of music on hold, the held segment of the call is on TDM to apply ring back and the other segment is direct.

Video forking

Communication Manager transmits all provisional responses with or without the SDP message received on each forked segment of the call to the call originator. Communication Manager supports multi-party audio conference with two-party video. The video is direct between the first two parties of the call, and the audio is mixed at Communication Manager.