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The

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 supports the following Real Time Control Protocol (RTCP) modes for media:

RTCP Modes for Media


RTCP Mode

Use DSP(s)


RTCP Behavior

RTCP Relay for pass-through calls with RTCP enabled on both legs

No

RTCP is relayed between two end users. The SBC will not terminate the RTCP sessions; however, it will set up the media-path to forward RTCP packets from one party to the other. This is the default and recommended approach for handling RTCP for pass-through calls.

RTCP termination for a pass-through call with RTCP enabled on only one leg

Yes

 If RTCP is enabled on only one leg of a pass-through call and "terminationForPassThrough" flag is also enabled, the SBC generates RTCP for that leg.

RTCP for transcoded calls legs

No

If RTCP is enabled on the leg, the SBC will terminate RTCP.

In either pass-through or termination modes, the SBC collects packet RTCP statistics and reports them for output to CDRs. Configurable parameters include:

  • Media peer inactivity—Configure media peer inactivity time out value. When using this feature, you must also set the flag, peerAbsenceAction, from the Packet Service Profile.
  • Media port range—Use this control to set the UDP media port range for RTP and RTCP.
  • Media RTCP control—Configure sender report interval.

 

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