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Universal Network Terminal TAU-32M.IP 145
G.723.1 codec is used together with 'Silence compression' setting. When the setting is enabled,
Annex A support is enabled, otherwise it is disabled.
–
G.711A
–use G.711A codec;
–
G.711U
–use G.711U codec;
–
G.726-32–use G.726-32 codec.
–
G.723
–use G.723.1 codec;
–
G.729A
–use G.729 annexA codec (when defining codec compatibility, non-standard codec description is
sent via SIP: a=rtpmap:18 G729А/8000 a=fmtp:18 annexb=no);
–
G.729B
–use G.729 annexB codec.
G.726-32 codec used only in SIP protocol operations.
Packet coder time
In
Packet coder time
section you may see packetization time, i.e. amount of speech milliseconds (ms)
transmitted in one RTP voice packet:
–
G711
–for G711 codec (permitted values: 10, 20, 30, 40, 50, 60);
–
G729
–for G729 codec (permitted values: 10, 20, 30, 40, 50, 60, 70, 80);
–
G723
–for G723 codec (permitted values: 30, 60, 90);
–
G.726-32
– for G.726-32 codec (allowed values 10, 20, 30).
Features:
–
G.726-32 PT
–G.726-32 codec payload type (permitted values: 96 to 127);
–
DTMF Transfer
–DTMF tone transmission method. During established session, DTMF transmission is used
for extension dialling;
Inband
–inband, in RTP voice packets;
RFC2833
–according to RFC2833 recommendation, as a dedicated payload in RTP voice packets;
INFO
–outbound. For SIP protocol, INFO messages are used; the type of transmitted DTMF tones
depends on MIME extension type (for detailed description, see Section 5.1.2.2.3). When H.323
protocol is used, DTMF transmission method depends on 'DTMF Transfer' parameter in H.323 tab
(see Section 5.1.2.2.2).
In order to be able to use extension dialling during the call, make sure that the similar DTMF tone
transmission method is configured on the opposite gateway.
–
Fax Detect Direction
–defines the call direction for fax tone detection and subsequent switching to fax
codec:
no detect fax
–disables fax tone detection, but will not affect fax transmission (switching to fax codec
will not be initiated, but such operation still may be performed by the opposite gateway);
Caller and Callee
–tones are detected during both fax transmission and receiving. During fax
transmission, CNG FAX signal is detected from the subscriber's line. During fax receiving, V.21 signal
