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6.12 Channel Parameters
The Channel Parameters define the DTMF, fax and modem transfer modes. Refer to
on page
203
page
139
for detailed description on DTMF transport modes.
Note that the Default Channel Parameters are applied to all Mediant 2000 channels.
Note:
Table 6-7: Channel Parameters (continues on pages 128 to 131)
ini File Field Name
Web Parameter Name
DJBufMinDelay
[Dynamic Jitter Buffer Minimum
Delay]
DJBufOptFactor
[Dynamic Jitter Buffer Optimization
Factor]
FaxTransportMode
[Fax Transport Mode]
FaxRelayEnhancedRedundancyDe
pth
[Fax Relay Enhanced Redundancy
Depth]
FaxRelayRedundancyDepth
[Fax Relay Redundancy Depth]
FaxRelayMaxRate
[Fax Relay Max Rate (bps)]
FaxRelayECMEnable
[Fax Relay ECM Enable]
FaxModemBypassCoderType
[Fax/Modem Bypass Coder Type]
Mediant 2000 SIP User's Manual
for a detailed description of Fax and Modem transfer modes; refer to Section
In
Table
6-7, parameters in brackets are the format in the Embedded Web
*
Server
.
*
0 to 150 msec (default = 70)
Dynamic Jitter Buffer Minimum Delay.
Note: For more information on the Jitter Buffer, refer to Section
132.
Dynamic Jitter Buffer frame error / delay optimization factor.
You can enter a value from 0 to 13.
The default factor is 7.
Note 1: Set to 13 for data (fax & modem) calls.
Note 2: For more information on the Jitter Buffer, refer to Section
132.
Fax transport mode that the gateway uses.
You can select:
0 = Disable.
1 = T.38 Relay (default).
2 = Bypass.
Note: If parameter IsFaxUsed = 1, then FaxTransportMode is always set to 1
(T.38 relay).
0 to 4 (default = 0)
Number of repetitions applied to control packets when using T.38 standard.
Number of times that each fax relay payload is retransmitted to the network.
You can enter a value from 0 to 2.
The default value is 0.
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).
0 = Disable using ECM (Error Correction Mode) mode during fax relay.
1 = Enable using ECM mode during fax relay (default).
Coder the gateway uses when performing fax/modem bypass. Usually, high-bit-
rate coders such as G.711 should be used.
You can select:
0 = G711 A-law 64 (default).
1 = G711 µ-law.
4 = G726 32.
11 = G726_40.
Valid Range and Description
128
Mediant 2000 SIP
Appendix D
8.2
6.12.1
on page
6.12.1
on page
Document #: LTRT-72504
on
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