Yealink SIP-T21P User Manual

Basic Call Features
69
- If you are using the speakerphone, press or the Cancel soft key.
Note
To redial the last dialed number from your phone:
1. Press twice.
A call to your last dialed number is attempted.
To redial a previously dialed number from your phone:
1. Press when the phone is idle.
2. Press or to select the desired entry, and then press or the Send soft
key.
You can view the placed calls list when the phone is in the pre-dialing screen. To do this,
you should enable recent call in dialing in advance.
To enable recent call in dialing via web user interface:
1. Click on Directory->Setting.
2. Select Enabled from the pull-down list of Recent Call In Dialing.
To end a call placed on hold, you can press the Cancel soft key to end the call directly, or
press the Resume soft key to resume the call before ending it.

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