innovaphone IP DECT
Page 83
H.323 Interop Tweaks
section. They are normally not necessary and are
merely used to solve compatibility problems with some PBXs:
4.2.2.3.2
CGPN/CDPN Mappings
A detailed description may be found in the chapter entitled “
Administration/Ga-
teway/Interface/CGPN-CDPN Mappings
”.
4.2.2.4 Administration/Gateway/Routes
The most important task of the gateway is call routing. It determines which calls
are accepted and where they are switched to.
Call routing is carried out by the gateway's gatekeeper and is controlled by routes
No Faststart
The H.245 faststart procedure is enabled as standard.
Outgoing calls are made with faststart, incoming calls
with faststart are answered with faststart.
A checked check box disables the H.245 faststart proce-
dure. Outgoing calls are made without faststart, inco-
ming calls with and without faststart are answered
without faststart.
No H.245 Tunne-
ling
The H.245 tunneling procedure is enabled as standard.
The voice data connection is negotiated in the TCP
signalling connection
a
already available. This can be
advantageous in connection with NAT and firewalls.
A checked check box disables the H.245 tunneling proce-
dure, meaning that a separate TCP connection is set up
for this negotiation. This applies to the signalling connec-
tion leading out of the gatekeeper.
a. From a technical viewpoint, the H.245 protocol does not establish its own TCP connec-
tion, but shares the H.225 TCP connection.
Suppress HLC
A checked check box disables the transmission of HLC
(
H
igh
L
ayer
C
ompatibility) information elements.
Suppress FTY
A checked check box disables the transmission of FTY
(
F
acili
ty
) information elements.
Suppress Sub-
address
A checked check box disables the transmission of Sub-
address
information elements.
