Yealink SIP-T2 SERIES Administrator's Manual page 338

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
2. Select the desired value from the pull-down list of Allow IP Call.
3. Click Confirm to accept the change.
To configure allow IP call feature via phone user interface (take SIP VP-T49G IP phones
for example):
1. Tap ->Advanced (default password: admin) ->VC Accounts->SIP IP Call.
2. Tap the Allow IP Call field and then tap the desired value in the pop-up dialog box.
3. Tap the Save soft key to accept the change.
Accept SIP trust server only enables the IP phones to only accept the SIP message from
your SIP server and outbound proxy server. It can prevent the phone receiving ghost
calls from random numbers like 100, 1000, etc. To stop this from happening, you also
need to disable allow IP call feature. For more information on allow IP call, refer to
IP Call on page 314.
Procedure
Accept SIP trust server can be configured using the configuration files or locally.
Configuration File
Local
316
<y0000000000xx>.cfg
Web User Interface
Configure accept SIP trust server.
Parameter:
sip.trust_ctrl
Configure accept SIP trust server.
Navigate to:
For
SIP-T48G/T46G/T42G/T41P/T40P/T2
9G/T27P/T23P/T23G/T21(P)
E2/T19(P) E2/CP860:
http://<phoneIPAddress>/servlet
Allow