Yealink SIP-T21 E2 Administrator's Guide

Configuring Advanced Features
807
Parameters
Permitted Values
Default
Phone User Interface:
None
softkey.X.use.ring_back
(X ranges from 1 to 10)
0 or 1
0
Description:
Enables or disables the custom soft key X to be displayed in the ring back state.
0-Disabled
1-Enabled
Note: It works only if the values of the parameters “features.enhanced_dss_keys.enable”
and “softkey.X.enable” are set to 1 (Enabled).
Web User Interface:
None
Phone User Interface:
None
softkey.X.use.transfer_ring_back
(X ranges from 1 to 10)
0 or 1
0
Description:
Enables or disables the custom soft key X to be displayed in the transfer ring back state.
0-Disabled
1-Enabled
Note: It works only if the values of the parameters “features.enhanced_dss_keys.enable”
and “softkey.X.enable” are set to 1 (Enabled).
Web User Interface:
None
Phone User Interface:
None
softkey.X.use.hold
(X ranges from 1 to 10)
0 or 1
0
Description:
Enables or disables the custom soft key X to be displayed in the hold state.
0-Disabled
1-Enabled
Note: It works only if the values of the parameters “features.enhanced_dss_keys.enable”

Yealink SIP-T21 E2 Specifications

General

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