VoIP gateway IP400 version 5.01
Page 73
6.1.4 H.323 protocol options
With regard to communication with other VoIP devices, your gateway supports a
series of protocol options which affect certain details of its behaviour. These
options are available regardless of the
Gateway mode
used.
Option
Description
Disable
Faststart
The basic settings allow the H245 Faststart procedure. Out-
going calls are implemented with Faststart, incoming calls
with Faststart are answered with Faststart. The
Disable
Faststart
option has to be activated if the H245 Faststart
procedure is to be disabled.
Outgoing calls are made without Faststart and incoming calls,
with or without Faststart, are answered without Faststart if
this option is deactivated.
We only recommend activating the
Disable Faststart
option
if compatibility problems occur with third party products.
Tip
Some ring tones might not be audible, if connections are established to end
points with H.323 version 2. In this case, update the protocol of the remote
entity.
Disable
H245-
tunneling
In the basic settings, the voice data connection is negotiated
in the TCP signalling connection
1
already available. A TCP
connection of its own is established for this negotiation if
Disable H245-tunneling
is activated. This applies to the
signalling connection out of the gatekeeper.
A separate connection for negotiations is not required if
Dis-
able H245-tunnelling
is deactivated, which can be of
advantage in connection with
NAT
and
firewalls
.
We only recommend activating
Disable H245 tunnelling
if
compatibility problems occur with third party products.
Tip
Some ring tones might not be audible, if connections are established to end
points with H.323 version 2. In this case, update the protocol of the remote
entity.