Yealink SIP-T2 SERIES Administrator's Manual page 336

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Allow IP Call feature allow IP phones to receive or place an IP address call. You can
neither receive nor place an IP address call if allow IP call feature is disabled.
Procedure
Allow IP call can be configured using the configuration files or locally.
Configuration File
Local
Details of Configuration Parameters:
features.direct_ip_call_enable
Description:
Enables or disables allow IP address call.
0-Disabled
1-Enabled
Note: If you want to receive an IP address call, make sure the value of the parameter
―sip.trust_ctrl‖ is set to 0 (Disabled).
Web User Interface:
For SIP-T48G/T46G/T42G/T41P/T40P/T29G/T27P/T23P/T23G/T21(P) E2/T19(P) E2/CP860:
Features->General Information->Allow IP Call
For SIP VP-T49G:
314
<y0000000000xx>.cfg
Web User Interface
Parameters
Configure allow IP call.
Parameter:
features.direct_ip_call_enable
Configure allow IP call.
Navigate to:
For
SIP-T48G/T46G/T42G/T41P/T40P/T2
9G/T27P/T23P/T23G/T21(P)
E2/T19(P) E2/CP860:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
For SIP VP-T49G:
http://<phoneIPAddress>/servlet
?m=mod_data&p=account-direc
t&q=load&acc=0
Permitted Values
0 or 1
Default
1