2N SIP Mic, Руководство пользователя, Страница: 29 / 68

2N® SIP Mic User Manual
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Port – set the port to be used for STUN. The default value is port 3478 .
Refresh rate – define the keep-alive packet sending period. The default value is 600
s.
NAT IP – enter the public IP address and NAT port to which signalling messages shall be
sent by the opponent. Packets are then sent to the PBX as defined in the port routing and
router IP address settings.
Audio codec
Send DTMF via – choose the DTMF sending type.
Inband (Audio) – allow the classic DTMF sending in the audio band using
standardised dual tones.
RFC2833 – allow DTMF sending via RTP according to RFC-2833.
SIP info – allow DTMF sending via SIP INFO messages according to RFC-2976.
DTMF payload type – set the payload type for DTMF: any value from 96 to 127. Make sure
that the Proxy and end terminals are identical to make the function work properly.
RTP port – set the local RTP port to be the source of the RTP stream sent from the device.
Codec priority – enable/disable the use of audio codecs offered at the call setup and set
the priority. The options are G.711a (alaw), G.711u (ulaw) and G.722.
Codec settings – set the codec specific parameters.
Codec name
Blocks
– set the size of the data block to be sent. Used for more effective use of the
bandwidth.
Use VAD – use VAD for data transmission optimisation. Packets are not sent when
the user is not speaking. VAD stands for Voice Activity Detector.
Others