AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 858)

41-001343-01 Rev 03, Release 3.2.2 A-127
Parameter –
sip dtmf method
DTMF Method
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->RTP Settings
Configuration Files aastra.cfg, <model>.cfg, <mac>.cfg
Description Sets the Dual-tone multifrequency (DTMF) method to use on the IP
phone.
Format Boolean
Default Value 0 (RTP)
Range 0 (RTP)
1 (SIP INFO)
2 (BOTH)
Example sip dtmf method: 1
Parameter –
sip srtp mode
RTP Encryption
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->
RTP Settings
Configuration Files aastra.cfg, <model>.cfg, <mac>.cfg
Description This parameter determines if SRTP is enabled on this IP phone, as
follows:
•
If set to 0, then disable SRTP.
• If set to 1 then SRTP calls are preferred.
• If set to 2, then SRTP calls only are generated/accepted.
Format Integer
Default Value 0 (SRTP Disabled)
Range 0 (SRTP Disabled)
1 (SRTP Preferred)
2 (SRTP Only)
Example sip srtp mode: 1
Parameter –
sip silence suppression
Silence Suppression
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->RTP Settings
Configuration Files aastra.cfg, <model>.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