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Mediant 2000 SIP User’s Manual 6. ini File Configuration of the Mediant 2000
Version 4.4 105 July 2005
Table 6-3: SIP Configuration Parameters (continues on pages 100 to 110)
ini File Field Name
Web Parameter Name
*
Valid Range and Description
AMRSendRate
Determines the selected rate for the AMR coder. This parameter is relevant only if AMR
is included in the coder list (‘CoderName’).
0 = AMR 4.75 kbps.
1 = AMR 5.15 kbps.
2 = AMR 5.90 kbps.
3 = AMR 6.70 kbps.
4 = AMR 7.40 kbps.
5 = AMR 7.95 kbps.
6 = AMR 10.2 kbps.
7 = AMR 12.2 kbps (default).
EVRCRate
Determines the selected rate for the EVRC coder. This parameter is relevant only if
EVRC is included in the coder list (‘CoderName’).
0 = Variable rate (default).
1 = 1 kbps
2 = 4 kbps
3 = 8 kbps
EVRCPayloadType
Determines the payload type that is used when the selected coder is set to ‘Evrc’.
The valid range is 0 to 120. The default value is 60.
TransparentPayloadType
Specifies the payload type that is used when the selected coder is set to ‘Transparent’.
The valid range is 0 to120. The default value is 56.
DSPVersionTemplateNumb
er
Determines the number of the DSP load. Each load has a different coder list, a different
channel capacity and different supported features.
0 = G.711, G.726, G.723, G.729, Netcoder (default).
1 = AMR, G.711, G.726, G.723, G.729.
2 = EVRC, G.711, G.726, G.723, G.729.
EnableRFC2658Interleavin
g
When enabled, RTP packets include an interleaving byte for VBR coders.
0 = Disable (default).
1 = Enable.
Note: This parameter is applicable only to EVRC coder.
TransparentCoderOnDataC
all
0 = Only use coders from the coder list (default).
1 = Use transparent coder for data calls.
The ‘Transparent’ coder can be used on data calls. When the gateway receives a Setup
message from the ISDN with ‘TransferCapabilities = data’, it can initiate a call using the
coder ‘Transparent’ (even if the coder is not included in the coder list). This option is a
proprietary feature that requires the receiving gateway to include the ‘Transparent’
coder in its coder list.
IsFaxUsed
[Fax Signaling Method]
Determines the SIP signaling method used to establish and convey a fax session after
a fax is detected.
0 (No Fax) = No fax negotiation using SIP signaling (default).
1 (T.38 Relay) = Initiates T.38 fax relay.
2 (G.711 Transport) = Initiates fax using the coder G.711 A-law/µ-law (if not
previously selected) with adaptations (refer to note 1).
Note 1: Fax adaptations:
Echo Canceller = On
Silence Compression = Off
Echo Canceller Non-Linear Processor Mode = Off
Dynamic Jitter Buffer Minimum Delay = 40
Dynamic Jitter Buffer Optimization Factor = 13
Note 2: If the gateway initiates a fax session using G.711 (option 2), a ‘gpmd’ attribute
is added to the SDP in the following format:
For A-law: ‘a=gpmd:0 vbd=yes;ecan=on’. For µ-law: ‘a=gpmd:8 vbd=yes;ecan=on’.
Note 3: When ‘IsFaxUsed’ is set to 1 or 2, the parameter ‘FaxTransportMode’ is
ignored.
T38UseRTPPort
Defines that the T.38 packets are sent / received using the same port as RTP packets.
0 = Use the RTP port +2 to send / receive T.38 packets (default).
1 = Use the same port as the RTP port to send / receive T.38 packets.