Nortel Networks TP-1610 SIP AMRSendRate, EVRCRate, EVRCPayloadType, TransparentPayloadType, All

Mediant 2000 SIP User’s Manual 6. ini File Configuration of the Mediant 2000

Table 6-3: SIP Configuration Parameters (continues on pages 100 to 110)

ini File Field Name			Valid Range and Description
Web Parameter Name*
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	Determines the number of the DSP load. Each load has a different coder list, a different
er	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	When enabled, RTP packets include an interleaving byte for VBR coders.
g	0 = Disable (default).
	1	= Enable.
	Note: This parameter is applicable only to EVRC coder.
TransparentCoderOnDataC	0 = Only use coders from the coder list (default).
all	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	Determines the SIP signaling method used to establish and convey a fax session after
[Fax Signaling Method]	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/∝-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 ∝-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.

Version 4.4 105 July 2005