Yealink SIP-T21 E2

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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The following table lists pre-defined variable values.
Variable Value
Description
$mac
The MAC address of the IP phone.
$ip
The IP address of the IP phone.
$model
The IP phone model.
$firmware
The firmware version of the IP phone.
$active_url
The SIP URI of the current account when the IP phone
places a call, receives an incoming call or establishes a
call.
$active_user
The user part of the SIP URI for the current account when
the IP phone places a call, receives an incoming call or
establishes a call.
$active_host
The host part of the SIP URI for the current account when
the IP phone places a call, receives an incoming call or
establishes a call.
$local
The SIP URI of the caller when the IP phone places a call.
The SIP URI of the callee when the IP phone receives an
incoming call.
$remote
The SIP URI of the callee when the IP phone places a call.
The SIP URI of the caller when the IP phone receives an
incoming call.
$display_local
The display name of the caller when the IP phone places
a call.
The display name of the callee when the IP phone
receives an incoming call.
$display_remote
The display name of the callee when the IP phone places
a call.
The display name of the caller when the IP phone
receives an incoming call.
$call_id
The call-id of the active call.
$callerID
The display name of the caller when the IP phone
receives an incoming call.
$calledNumber
The phone number of the callee when the IP phone
places a call.