Yealink SIP-T21P Quick Reference Guide

BASIC CALL FEATURES
Placing a Call
Answering a Call
Ending a Call
Call Mute and Un-mute
Redial
Call Hold and Resume
To place a call on hold:
Using the handset:
Using the speakerphone:
Using the headset:
Using the handset:
Using the speakerphone:
Using the headset:
Using the handset:
Using the speakerphone:
Using the headset:
1. With the handset on-hook, press .
1. Pick up the handset.
2. Enter the number, and then press the Send soft key.
1. With the headset connected, press to activate the headset mode.
2. Enter the number, and then press the Send soft key.
Note: During a call, you can alternate between headset, hands-free speakerphone and handset modes by
pressing the HEADSET key or the Speakerphone key or picking up the handset. Headset mode requires a
headset connected.
Note: You can ignore an incoming call by pressing the Reject soft key.
2. Enter the number, and then press the Send soft key.
Pick up the handset.
Press .
Hang up the handset or press the Cancel soft key.
Press .
Press or the Cancel soft key.
Press the Cancel soft key.
SIP-T21P & SIP-T21 Quick Reference Guide
Press to enter the Placed Calls list, press or to select the desired entry, and then
press or the Send soft key.
Press twice when the phone is idle to dial out the last dialed number.
To resume the call, do one of the following:
Press to mute the microphone during a call.
Press again to un-mute the call.
If there is only one call on hold, press the Resume soft key.
Press the Hold soft key during an active call.

Yealink SIP-T21P Specifications

General

Display	132 x 64-pixel graphical LCD
Network	10/100 Mbps Ethernet
SIP Accounts	2
Wall Mountable	Yes
Audio Features	HD Voice
Protocols	SIP v1 (RFC2543), v2 (RFC3261)
Voice Codecs	G.711(A/μ), G.729AB, G.726, G.722
Phonebook	1000 entries
Call Features	Call hold, call waiting, call transfer, call forward, 3-way conferencing
Security	SRTP, TLS, 802.1x, HTTPS
Ethernet Ports	2 x RJ45 10/100 Mbps
Power Supply	Power over Ethernet (PoE) or optional power adapter
Operating Humidity	10% to 90% (non-condensing)
Languages	Supports multiple languages
PoE	Yes (802.3af)
Operating Temperature	-10°C to 50°C