Aastra Telecom SIP 57I - Manual (Page 582)

Operational, Basic, and Advanced Parameters
A-80 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Appendix A
Per-Line Settings
Parameter –
sip silence suppression
Silence Suppression
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->RTP Settings
Configuration Files aastra.cfg, <mac>.cfg
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
Parameter –
sip lineN dtmf method
DTMF Method
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->RTP Settings
Configuration Files aastra.cfg, <mac>.cfg
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