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Operational, Basic, and Advanced Parameters
A-103 41-001343-02 REV04 – 05.2014
Per-Line Settings
Parameter –
sip remove silence suppression offer
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description Specifies whether or not the silence suppression attribute should be included in the
Session Description Protocol (SDP) offer.
If enabled, the silence suppression attribute will be removed from the SDP offer. If dis-
abled, the attribute will not be removed from the SDP offer.
Note:
If the value of this parameter has changed, a reboot will be required for the change to
take effect.
Format Boolean
Default Value 0 (disabled)
Range 0 (disabled)
1 (enabled)
Example sip remove silence suppression offer: 1
Parameter –
sip lineN dtmf method
(N is a line number from 1 to 9)
Configuration Files
aastra.cfg, <model>.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
Parameter –
sip lineN srtp mode
(N is a line number from 1 to 9)
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description This parameter determines if SRTP is enabled on this line, as follows:
• If set to -1, then use the global setting for this line. (This is the default setting.)
• 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 (disabled)
Range -1
0
1
2
Example sip line1 srtp mode: 1