Yealink SIP-T2 SERIES Administrator's Manual page 339

Details of Configuration Parameters:
Parameters
sip.trust_ctrl
Description:
Enables or disables the IP phone to only accept the SIP message from the SIP 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.
Configuring Basic Features
?p=features-general&q=load
For SIP VP-T49G:
http://<phoneIPAddress>/servlet
?m=mod_data&p=features-gene
ral&q=load
Permitted Values
0 or 1
Default
0
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