Nortel Networks TP-1610 SIP user manual Default RTP/RTCP/T.38 Port Allocation

Mediant 2000 SIP

Payload Type	Description	Basic Packet Rate [msec]
53	NetCoder 8.0 kbps	20
54	NetCoder 8.8 kbps	20
55	NetCoder 9.6 kbps	20
56	Transparent PCM	20
96	DTMF relay per RFC 2833
102	Fax Bypass	20
103	Modem Bypass	20
104	RFC 2198 (Redundancy)	Same as channel’s voice coder.
105	NSE Bypass

C.3 Default RTP/RTCP/T.38 Port Allocation

The following table describes Mediant 2000 gateway default RTP/RTCP/T.38 Port Allocation.

Table C-3: Default RTP/RTCP/T.38 Port Allocation

Channel Number	RTP Port	RTCP Port	T.38 Port
1	6000	6001	6002
2	6010	6011	6012
3	6020	6021	6022
4	6030	6031	6032
5	6040	6041	6042
6	6050	6051	6052
7	6060	6061	6062
8	6070	6071	6072
:	:	:	:
n	6000 + 10(n-1)	6001 + 10(n-1)	6002 + 10(n-1)
:	:	:	:
96	6950	6951	6952
:	:	:	:
120	7190	7191	7192
:	:	:	:
192	7910	7911	7912
:	:	:	:
240	8390	8391	8392
:	:	:	:
384	9830	9831	9832
:	:	:	:
480	10790	10791	10792

Note: To configure the gateway to use the same port for both RTP and T.38 packets, set the parameter ‘T38UseRTPPort’ to 1.

Mediant 2000 SIP User’s Manual 202 Document #: LTRT-72504