Yealink T21P Quick Reference Guide

10
Volume Adjustment
• Press during a call to adjust the receiver volume of the
handset/speakerphone/ headset.
• Press
when the phone is idle to adjust the ringer
volume.
Ring Tones
1. Press Menu when the phone is idle, and then select Settings > Basic
Settings > Ring Tones.
2. Press
or to select the desired ring tone.
3. Press Save to accept the change.
Backlight
Backlight options:
• Always On: Backlight is on permanently
• Always Off: Backlight is off permanently
• 15s, 30s, 60s, 120s, 300s, 600s or 1800s: Backlight is turned off
when the phone is inactive after the designated time (in seconds).
To congure the backlight:
1. Press Menu > Settings > Basic Settings > Display > Backlight.
2. Press
or to select the desired time from the Backlight Time eld.
3. Press Save.

Yealink T21P Specifications

General

SIP Accounts	2
Wall Mountable	Yes
Speakerphone	Yes
Network	10/100 Mbps Ethernet
Voice Codecs	G.722
Protocols	DHCP
Operating Humidity	10% to 95% (non-condensing)