Yealink SIP-T21 E2 Administrator's Guide

Configuring Basic Features
203
Parameters
Permitted Values
Default
Configures the starting time and ending time of the day’s office hour.
Starting time and ending time are separated by a comma.
Example:
features.power_saving.office_hour.monday = 7,19
Note: It is not applicable to SIP-T19(P) E2 IP phones.
Web User Interface:
Settings->Power Saving->Monday/Tuesday/Wednesday/Thursday/Friday/Saturday/Sunday
Phone User Interface:
None
To configure the power saving feature via web user interface:
1. Click on Settings->Power Saving.
2. Select Enabled from the pull-down list of Power Saving.
3. Enter the starting time and ending time respectively in the desired day field.
4. Enter the desired value (1-960) in the Office Hours Idle TimeOut field.
5. Enter the desired value (1-10) in the Off Hours Idle TimeOut field.
6. Enter the desired value (1-30) in the User Input Extension Idle TimeOut field.
7. Click Confirm to accept the change.
Backlight
Backlight determines the brightness of the LCD screen display, allowing users to read easily in

Yealink SIP-T21 E2 Specifications

General

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