Aastra Telecom 53I - Manual (Page 42)

Security Features
36 RN-001029-00, Rev 03, Release 2.1
IP Phone Release Notes 2.1
Per-Line Parameter
Parameter –
sip lineN srtp mode Aastra Web UI Advanced Settings->Line <1-9>>
RTP Settings
Configuration Files aastra.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 mode: 1