User`s manual

MP-1xx H.323 User’s Manual 5. Configuring the MP-1xx
Version 4.4 119 March 2005
Table 5-37 describes the Channel parameters that can only be configured via the ini file.
Table
5-37: Channel Settings, ini file Parameters
ini File Parameter Name Description
ECHybridLoss
0 = 6 dB (default)
1 = 9 dB
2 = 0 dB
3 = 3 dB
Sets the four wire to two wire worst case Hybrid loss, the ratio between the signal
level sent to the hybrid and the echo level returning from the hybrid.
FaxModemRelayVolume
-18 to -3, corresponding to -18 dBm to -3 dBm in 1 dB steps. (Default = -12 dBm)
fax gain control.
MGCPDTMFDetectionPoint
0 = DTMF event is reported on the start of a detected DTMF digit.
1 = DTMF event is reported on the end of a detected DTMF digit (default).
The parameter is used for out-of-band dialing (H.245 user input message or H.225
keypad facility)
DTMFDigitLength
Time in msec for generating DTMF to PSTN side.
Default = 100 msec.
DTMFInterDigitInterval
Time in msec between generated DTMFs to PSTN side.
Default = 100 msec.
TestMode
0 = CoderLoopback, encoder-decoder loopback inside DSP.
1 = PCMLoopback, loopback the incoming PCM to the outgoing PCM.
2 = ToneInjection, generates a 1000 Hz tone to outgoing PCM.
3 = NoLoopback, (default).
ModemBypassPayloadType
Modem Bypass dynamic payload type (range 0-127).
The default value is 103.
DetFaxOnAnswerTone
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
2 = 10 msec
3 = 20 msec
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: 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.711 µ-
Law, according to the parameter ‘FaxModemBypassCoderType’. The payload type
used with these G.711 coders is a standard payload type (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.