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2N TELEKOMUNIKACE a.s., www.2n.cz 53/134
The tab below helps you define how DTMF characters shall be received from the intercom. Check the
opponent’s DTMF receiving options and settings to make the function work properly.
In-Band (Audio) – enable classic DTMF dual tone receiving in the audio band.
RTP (RFC-2833) – enable DTMF receiving via 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 length for compensation of interval
unevenness in audio packet arrivals. A higher capacity improves the transmission
resistance at the cost of a greater sound delay.
Video
Enable/disable the use of video codecs for call setups and set their priorities.
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