You can record just the incoming or outgoing tracks of call, or both tracks of a call.
This image shows a typical one-legged, or non-bridged, incoming call.
The call only has one leg with a callID of call-id-1. The
INCOMING audio track is the audio from the caller to the SIP media application. The OUTGOING
audio track is the audio from the SIP media application to the caller. Your SIP media application
specifies the CallId of the call that you want record. To record the participant who placed the
call, you specify INCOMING. To record the participant who responds to a call, you specify
OUTGOING. To record both participants, specify BOTH.
This image shows a typical bridged call with two participants.
In this example, the call has two call legs, call-id-1 and
call-id-2, and call-id-1 is bridged to call-id-2. This
creates four audio tracks, the incoming and outgoing audio streams for both call IDs.
You can specify which of the call IDs and audio tracks to record. For example, if you
want to record the audio track from the called participant, you record the
INCOMING audio track by specifying call-id-2 as the CallId and INCOMING as the
track.
If you want to record everything that the caller hears, you record the OUTGOING
audio track by specifying call-id-1 as the
CallId and OUTGOING as the track. If you want to record
all of the audio that the Caller said and heard, you record
BOTH audio tracks by specifying call-id-1 as the
CallId and BOTH as the track.
