Aastra Telecom 57I CT, 55I, 53I manual Sip silence suppression

IP Phone Administrator Guide

Operational, Basic, and Advanced Parameters

Appendix A

Parameter –	Aastra Web UI		Advanced Settings->Global SIP->RTP Settings
sip silence suppression	Configuration Files		aastra.cfg, <mac>.cfg
Silence Suppression
(in Web UI)
Description	Silence suppression is enabled by default on the IP phones. The phone
	negotiates whether or not to use silence suppression. Disabling this
	feature forces the phone to ignore any negotiated value.
Format	Boolean
Default Value	1	(enabled)
Range	0	(disabled)
	1	(enabled)
Example	sip silence suppression: 0

Per-Line Settings

Parameter –	Aastra Web UI		Advanced Settings->Global SIP->RTP Settings
sip lineN dtmf method	Configuration Files		aastra.cfg, <mac>.cfg
DTMF Method
(in Web UI)
Description	Sets the Dual-tone multifrequency (DTMF) method to use on the IP
	phone for a specific line.
Format	Integer
Default Value	0	(RTP)
Range	0	(RTP)
	1	(SIP INFO)
	2	(BOTH)
Example	sip line1 dtmf method: 1

A-80 41-001160-00, Release 2.1, Rev 04