Altigen AltiContact Manager Version 5.0A, Administration Manual

Page: 280 / 578

Setting up H.323 Traffic Forwarding for NAT
9-28 AltiContact Manager Administration Manual
Setting up H.323 Traffic Forwarding for NAT
When you configure the H.323 NAT router, it can forward the IP traffic to
a specified private IP address based on the destination port in the TCP/IP
or UDP packets. When an H.323 endpoint is behind the H.323 NAT, you
should set up the forwarding to a private IP address of this H323 endpoint.
If this H.323 endpoint is AltiWare, the NAT router must be configured to
forward the following ports to the H.323 endpoint's private IP address:
If this H.323 endpoint is an AltiGen IP Phone or IP Talk, the NAT router
must be configured to forward the following ports to the H.323 endpoint's
private IP address:
If this H.323 endpoint is IP Talk integrated with AltiView, you need to set
all unknown TCP/UDP ports to be forwarded to the IP phone's private IP
address. This is usually referred to as DMZ port forwarding in most NAT
routers.
a. It is recommended that this be run only in an intranet .
b. N=49152+ (62*number of boards)–1
TCP UDP Description
1718 for gatekeeper discovery
10032 1719 for gatekeeper RAS
1720 for H.225
49152~N
a
a. N=49152 + (62 * number of VoIP boards) - 1
49152~N for H.245 and RTP/RTCP
TCP UDP Description
1718 for gatekeeper discovery
1720 for H.225
30040 ~ 30042 for H.245
30000 ~ 30001 for RTP/RTCP