Help > Using the web interface > Administration > VoIP > VoIP configuration > RTP
RTP
RTP Range
The RTP port is a port on the local system that is used as the outgoing port for RTP transfers.
*Note: The page Administration > Network > Ports shows an overview of the PBX ports (incoming and outgoing).
*Further help under VoIP telephony
RTCP (Real-time Transport Control Protocol)
Adds the RTCP (Real-time Transport Control Protocol).
Only disable this option if the internal VoIP devices require it.
*Further help under VoIP telephony
SSRC (Synchronization Source)
Adds the SSRC (Synchronisation Source).
Only disable this option if the internal VoIP devices require it.
*Further help under VoIP telephony
Bandwidth
Sends the bandwidth required by the negotiated codec in the SDP.
Only disable this option if the internal VoIP devices require it.
*Further help under VoIP telephony
X-nat
Sends the ‘X-nat’ attribute in the SDP, e.g. for debugging purposes.
*Further help under VoIP telephony
Connection information in media level
Sends the connection information in the media level.
Only disable this option if the internal VoIP devices require it (e.g. if there is no audio). If this option is disabled, the connection information is sent in the session level.
*Further help under VoIP telephony