Configuring the ip phones – Aastra Telecom SIP 480I User Manual
Page 112
Advanced Network Settings
4-56
41-001129-00 Rev 09, Release 1.4.1
IP Phone Administrator Guide
Configuring the IP Phones
5
Enter a "Customized Codec Preference List" which all
payload=8;ptime=10;
silsupp=on;
payload=0;ptime=10;
silsupp=off
Valid values are:
6
ISelect a method to use from the DTMF Method list box. Valid values are RTP, SIP Info, Both.
Note: You can also configure the DTMF Method on a per-line basis at Advanced Settings->
Line N (1-9).
7
Silence suppression is enabled by default. If required, disable the "Silence Suppression" field by
unchecking the check box.
8
Click
to save your changes.
9
Select Operation->Reset and click
..
Aastra Web UI
Step Action
Attribute
Value
payload
0 for G.711 u-Law
8 for G.711 a-Law
18 for G.729a
ptime (in milliseconds)
5, 10, 15, 20.....90
silsupp
on
off