3Com VCX V7122 SIP User Manual page 75

Channel Parameters
Table 18
INI File Field Name
*
GUI Parameter Name
V32ModemTransportType
(For V.32 and V.32bis modems) (V32
Modem Transport Type)
V34ModemTransportType
(For V.34 and V.90 modems)
(V34 Modem Transport Type)
DTMFVolume
(DTMF Volume)
DTMFTransportType
(DTMF Transport Type)
RFC2833PayloadType
(RFC 2833 Payload Type)
InputGain
(Input Gain)
VoiceVolume
(Voice Volume)
M
(Packing Factor)
RTPRedundancyDepth
(RTP Redundancy Depth)
3Com VCX V7122/SIP VoIP Gateway User Manual
Valid Range and Description
0 = Transparent
2 = Modem Bypass, (default)
0 = Transparent
2 = Modem Bypass, (default)
-31 – 0 corresponding to -31 dBm to 0 dBm in 1 dB steps
(default = -11 dBm)
DTMF gain control
0 = erase digit from voice stream, do not relayed to
remote
1 = erase digit from voice stream, relay to remote.
(Default)
2 = digits remains in voice stream
3 = erase digit from voice stream, relay to remote
according to RFC 2833
The RFC 2833 DTMF relay dynamic payload type
Range: 96 – 99, 106 – 127; Default = 96
The 100 – 105 range is allocated for 3Com proprietary
usage. Cisco uses payload type 101 for RFC 2833. The
same payload type should be used for receive and for
transmit.
-31 to +31 in 1 dB steps (Default = 1 dB)
PCM input gain
-31 to +31 in 1 dB steps
(Default = 1 dB). Voice gain control
Number of codec payloads (10, 20 or 30 ms, depending
on selected codec) to be used for generating one RTP
packet.
M = n payloads (n = 1, 2, 3 or 4)
M = 1 (default)
0 = Disable redundancy packets generation (default)
1 = Enable generation of RFC 2198 redundancy packets
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