User`s manual

Mediant 1000
H.323 User's Manual 394 Document #: LTRT-83401
D.3 Default RTP/RTCP/T.38 Port Allocation
The following table shows the default RTP/RTCP/T.38 port allocation.
Channel Number RTP Port RTCP Port T.38 Port
1 4000 4001 4002
2 4010 4011 4012
3 4020 4021 4022
4 4030 4031 4032
5 4040 4041 4042
6 4050 4051 4052
7 4060 4061 4062
8 4070 4071 4072
: : : :
n 4000 + 10(n-1) 4001 + 10(n-1) 4002 + 10(n-1)
: : : :
96 4950 4951 4952
: : : :
120 5190 5191 5192
Note: To configure the gateway to use the same port for both RTP and T.38
packets, set the parameter ‘T38UseRTPPort’ to 1.