Yealink SIP-T21 E2 Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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Parameters
Permitted Values
Default
Phone User Interface:
None
action_url.unheld
URL within 511 characters
Blank
Description:
Configures the action URL the IP phone sends when a call being held is resumed.
Example:
action_url.unheld = http://192.168.0.20/help.xml?IP=$ip
Web User Interface:
None
Phone User Interface:
None
action_url.mute
URL within 511 characters
Blank
Description:
Configures the action URL the IP phone sends when muting a call.
Example:
action_url.mute = http://192.168.0.20/help.xml?IP=$ip
Web User Interface:
Features->Action URL->Mute
Phone User Interface:
None
action_url.unmute
URL within 511 characters
Blank
Description:
Configures the action URL the IP phone sends when un-muting a call.
Example:
action_url.unmute = http://192.168.0.20/help.xml?IP=$ip
Web User Interface:
Features->Action URL->UnMute
Phone User Interface:
None

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English