Yealink SIP-T21P User Manual

Advanced Phone Features
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The LCD screen prompts “Delete Message?”.
4. Press the Ok soft key to delete this message or the Cancel soft key to cancel.
You can also delete all text messages by pressing the Delete soft key and then select
Del All. For more information, refer to the above steps.
Note
You can leave voice mails for someone else on the SIP-T21P IP phone. You can also listen
to the voice mails stored in a centralized location. When receiving a new voice mail, the
phone will play a warning tone and the MESSAGE key LED will illuminate. The LCD
screen will display a prompt message and flashing icon.
Note
To leave a voice mail:
You can leave a voice mail for someone else when he/she is busy or inconvenient to
answer the call. Follow the voice prompt from the system server to leave a voice mail,
and then hang up.
You can also delete a specific message after retrieving by pressing the Delete soft key.
Voice mail is not available on all servers. Contact your system administrator for more
information.

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