Yealink SIP-T2 Series

Configuring Basic Features
369
Details of Configuration Parameter:
Parameter
Permitted Values
Default
sip.trust_ctrl
0 or 1
0
Description:
Enables or disables the IP phone to only accept the SIP message from the SIP server and
outbound proxy server.
0-Disabled
1-Enabled
Web User Interface:
Features->General Information->Accept SIP Trust Server Only
Phone User Interface:
None
To configure accept SIP trust server only feature via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Accept SIP Trust Server Only.
3. Click Confirm to accept the change.