Yealink SIP-T21 E2 Administrator's Guide

Configuring Advanced Features
741
Variable Value
Phone Action
L1-LX
Press the line keys (for SIP-T48G/S, X=29; for
SIP-T54S/T46G/T46S/T29G, X=27; for SIP-
T42G/T42S/T41P/T41S, X=15; for SIP-
T52S/T27P/T27G, X=21; for SIP-
T40P/T40G/T23P/T23G, X=3; for SIP-T21(P)
E2, X=2).
F1-F4
Press the soft keys.
MSG
Press the MESSAGE key (not applicable to
CP860/CP920 IP phones).
HEADSET
Press the HEADSET key (not applicable to
CP860/CP920 IP phones).
RD
Redial the last dialed number (not applicable
to CP920 IP phones).
UP/DOWN/LEFT/RIGHT
Press the navigation keys.
Reboot
Reboot the phone.
AutoP
Perform auto provisioning.
DNDOn
Activate the DND feature.
Note: For Yealink IP phones (except CP860), it
works only if the value of the parameter
“features.dnd.allow” is set to 1 (Enabled).
DNDOff
Deactivate the DND feature.
Note: For Yealink IP phones (except CP860), it
works only if the value of the parameter
“features.dnd.allow” is set to 1 (Enabled).
number=xxx&outgoing_uri=y
Place a call to xxx from SIP URI y.
Example:
http://10.3.20.10/servlet?key=number=1234&
outgoing_uri=1006@10.2.1.48 (1234 means
the number you dial out; 1006@10.2.1.48
means the SIP URL you dial from.)

Yealink SIP-T21 E2 Specifications

General

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