Specifications

TD 92326GB

2009-03-10 / Ver. E

Installation and Operation Manual

VoIP Gateway

3 Click “OK”.

6.3 H.323 – NAT

Note: Not supported by Ascom.

1 Select IP > H.323 NAT.

Figure 25. H.323 NAT

2 Enable/Enter following settings:.

3 Click “OK”.

• Protocol TCP (Transmission Control protocol) or

UDP (User Datagram Protocol)

• Port The TCP or UDP port number that the originating device

is asking the receiving device to open.

• Address IP addresses of the receiving device.

Figure 25.

Field name Description

• Enable H.323-NAT Enables NAT for H.323 VoIP calls.

Not required if the connection is operated with

unofficial, but known, IP addresses.

Network Address Translation (NAT) only needs to be

active on networks requiring official IP addresses. See

B.1 NAT and Firewalls on page 165.

• Require authentication

for inbound RAS

If set, incoming RAS registrations need to be

authenticated. The target PBXs LDAP need to be

replicated here.

• H.225/RAS destination IP address of host that inbound RAS requests are sent

to. Usually a gatekeeper. Allows to access a gatekeeper

behind NAT.

• H.225/Signalling

destination

The H.225 call signalling can be sent to a specified IP

address.

Status Registered clients and Active calls are shown in this

area.