Aastra Telecom 480I CT manual Phones, Line N

IP Phone Administrator Guide

Advanced Network Settings

		Aastra Web UI
Phones	Step	Action
	5	Enter a "Customized Codec Preference List" which all
		payload=8;ptime=10;
		silsupp=on;
		payload=0;ptime=10;
IP		silsupp=off
		Valid values are:
the
			Attribute		Value
			payload		0 for G.711 u-Law
Configuring		unchecking the	check box.		8 for G.711 a-Law
					18 for G.729a
			ptime (in milliseconds)		5, 10, 15, 20.....90
			silsupp		on
					off
	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
	8	Click		to save your changes.
	9	Select Operation->Reset and click			..

4-56 41-001129-00 Rev 09, Release 1.4.1