Nortel VoIP Gateway, Руководство по настройке

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90 Contents of the INI file
P0606298 02
Channel parameters
Table 15 describes the parameters that are found in the Channel Parameters section of the INI file.
Note: Nortel Networks recommends that you do not change any of the Channel
parameters except when instructed to do so by Nortel Networks service personnel.
Table 15 Channel parameters
INI File Field Name Valid Range and Description
DJBufMinDelay 0 to 150 msec (default = 70)
Dynamic Jitter Buffer Minimum Delay.
DJBufOptFactor 0 to 12 (default = 7)
Dynamic jitter buffer frame error/delay optimization.
BaseUDPPort Range 1000-64000 (default 4000)
The lower boundary of the UDP ports used by the VoIP Gateway for RTP, RTCP
and T.38 channels.
The upper boundary is the BaseU 10*(number of gateway’s channels).
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.
FaxModemBypassM 1, 2 (default = 1)
Number of 20 msec payloads to be used for generating one RTP fax/modem
bypass packet.
FaxModemRelayVolume -18 to -3, corresponding to -18 dBm to -3 dBm in 1 dB steps. (Default = -12 dBm)
Fax gain control.
FaxRelayECMEnable 0 = Disable using ECM mode during Fax Relay
1 = Enable using ECM mode during Fax Relay. (default)
FaxRelayEnhanced
RedundancyDepth 0 to 4 (default =0)
Number of repetitions applied to control packets when using T.38 standard.
FaxRelayRedundancyDepth 0 to 2 (default =0)
Number of repetitions to be applied to each fax relay payload when transmitting
to network (applicable only when T38ProtectionMode = 0).
FaxRelayMaxRate Limits the maximum rate at which fax messages are transmitted.
0 = 2.4 kbps
1 = 4.8 kbps
2 = 7.2 kbps
3 = 9.6 kbps
4 = 12.0 kbps
5 = 14.4 kbps, (default).
FaxTransportMode Sets the Fax transport
0 = disable
1 = relay, (default)
2 = bypass.
UseT38orFRF11 0 = Use proprietary FRF.11 syntax to send/receive fax relay.
1 = Use T.38 protocol to send/receive fax relay, (default).
V21ModemTransportType 0 = Transparent, (default)
2 = ModemBypass.