User`s manual

SIP User's Manual 6. Gateway's ini File Configuration
Version 5.0 197 October 2006
Table 6-12: Channel Parameters (continues on pages 196 to 200)
ini File Field Name
Web Parameter Name
Valid Range and Description
FaxModemBypassM
[Fax/Modem Bypass Packing
Factor]
Number of (20 msec) coder payloads that are used to generate a
fax/modem bypass packet.
The valid range is 1, 2 or 3 coder payloads.
The default value is 1 coder payload.
FaxBypassPayloadType
[Fax Bypass Payload Type]
Determines the fax bypass RTP dynamic payload type.
The valid range is 96 to 120. The default value is 102.
ModemBypassPayloadType
Modem Bypass dynamic payload type (range 0-127).
The default value is 103.
DetFaxOnAnswerTone
[Detect Fax on Answer Tone]
0 = Starts T.38 procedure on detection of V.21 preamble (default).
1 = Starts T.38 Procedure on detection of CED fax answering tone.
FaxModemBypassBasicRTPPac
ketInterval
0 = set internally (default)
1 = 5 msec (not recommended)
2 = 10 msec
3 = 20 msec
FaxModemBypassDJBufMinDela
y
0 to 150 msec (default=40)
Determines the Jitter Buffer delay during fax and modem bypass session
BellModemTransportType
Determines the Bell modem transport method.
0 = Transparent (default).
2 = Bypass.
3 = Transparent with events.
NSEMode
Cisco compatible fax and modem bypass mode
0 = NSE disabled (default)
1 = NSE enabled
Note 1: This feature can be used only if VxxModemTransportType=2
(Bypass)
Note 2: If NSE mode is enabled the SDP contains the following line:
’a=rtpmap:100 X-NSE/8000’
Note 3: To use this feature:
• The Cisco gateway must include the following definition: ‘modem
passthrough nse payload-type 100 codec g711alaw’.
• Set the Modem transport type to Bypass mode
(‘VxxModemTransportType = 2’) for all modems.
• Configure the gateway parameter NSEPayloadType= 100
In NSE bypass mode the gateway starts using G.711 A-Law (default) or
G.711µ-Law, according to the parameter ‘FaxModemBypassCoderType’.
The payload type used with these G.711 coders is a standard one (8 for
G.711 A-Law and 0 for G.711 µ-Law). The parameters defining payload type
for the ‘old' AudioCodes’ Bypass mode. ‘FaxBypassPayloadType’ and
‘ModemBypassPayloadType’ are not used with NSE Bypass. The bypass
packet interval is selected according to the parameter
‘FaxModemBypassBasicRtpPacketInterval’.
NSEPayloadType
NSE payload type for Cisco Bypass compatible mode.
The valid range is 96-127. The default value is 105.
Note: Cisco gateways usually use NSE payload type of 100.
V21ModemTransportType
[V.21 Modem Transport Type]
V.21 Modem Transport Type that the gateway uses.
You can select:
0 = Disable (Transparent) -- default
1 = Enable Relay – N/A
2 = Enable Bypass
3 = Events Only (Transparent with Events)