2N Helios IP Configuration manual v2.6 User Manual
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In-Band (Audio) – enable classic DTMF dual tone receiving in the audio band.
RTP (RFC-2833) – enable DTMF receiving via the RTP according to RFC-2833.
SIP INFO (RFC-2976) – enable DTMF receiving via SIP INFO messages
according to RFC-2976.
QoS DSCP value – set the audio RTP packet priority in the network. The set
value is sent in the TOS (Type of Service) field in the IP packet header.
Jitter compensation – set the buffer capacity for jitter compensation in audio
packet transmissions. A higher capacity improves the transmission resistance at
the cost of a greater sound delay.
Video
Video resolution – set the video resolution for phone calls.
Video framerate – set the video frame rate for phone calls.
Video bitrate – set the video stream bit rate for phone calls.