Patton electronics SmartNode Series Software Configuration Manual page 366

29 • Gateway configuration
Mode: Gateway H.323
Step
1 node (gw-h323)[h323]#codec <tab>
2 node (gw-h323)[h323]#codec codec [tx-
packet-length] [rx-packet-length]
3
4 node (gw-h323)[h323]#faststart
5 node (gw-h323)[h323]#exit
6 node (cfg)#context cs
7 node (ctx-cs)[switch]#interface h323 if-
name
8 node (if-h323)[if-name]#codec codec
[exclusive]
Example: Selecting an H.323 codec
The following example shows how to define a list of codecs in the H.323 gateway with 20 ms for the length of
transmitted RTP packets and 40 ms for the announced length capability for received RTP packets. Further use of
codec G.711 on the H.323 interface is specified. Moreover fast connect is enabled for the H.323 call set-ups.
SN>enable
SN#configure
SN(cfg)#gateway h323 h323
SN(gw-h323)[h323]#codec g711alaw64k 20 40
SN(gw-h323)[h323]#codec g723_6k3 20 40
SN(gw-h323)[h323]#codec g729 20 40
SN(gw-h323)[h323]#faststart
SN(gw-h323)[h323]#exit
SN(cfg)#context cs
SN(ctx-cs)[switch]#interface h323 H323
SN(if-h323)[H323]#codec g711alaw64k
SN(if-h323)[H323]#
Note There is more than one possibility to establish a H.323 connection faster. Fast-
start is one of them. Another is to exchange H.245 messages soon (before the
CONNECT message of the H.323 call signaling). This feature is enabled per
default. If some compatibility problems pass, this feature could be disabled
with the command 'no early-h245'.
364
Command
SmartWare Software Configuration Guide
Purpose
List all available codecs on the H.323 gateway
Specify the default codec, transmitted packet size
and length capability for received packets for all
calls over the H.323 gateway.
Repeat step 2 to define all possible codecs used
on this H.323 gateway
Enable fast connect for a H.323 call set-up
Change to interface configuration mode to select
one of the listed codecs in the H.323 gateway for
the H.323 interface
Define the preferred codec on a fast connect call
set up. It is not possible to redefine the packet
lengths. If the codec is specified as exclusive, only
this codec can be used for the connection
Gateway configuration task list