Yealink SIP-T21P User Manual

Customizing Your Phone
53
3. Configure the network parameters in the corresponding fields.
4. Press the Next soft key.
5. Configure the auto provision parameters in the corresponding fields.
6. Press the Ok soft key.
The phone will reboot to update configurations.
Keypad Lock
You can use this key feature to immediately lock the keypad of your phone instead of
long pressing . For more information, refer to Keypad Lock on page 21.
Dependencies: Type (Keypad Lock)
Usage: Press the DSS key to immediately lock the keypad of your phone instead of long
pressing .
Directory
You can use this key feature to easily access frequently used lists. For more information,
refer to Directory on page 27.
Dependencies: Type (Dir)
Usage: Press the DSS key to immediately access to frequently used lists.
Note
You can customize the soft keys, navigation keys and function keys on the keypad.
To customize the programmable keys via web user interface:
1. Click on DSSKey->Programmable Key.
The DSS key performs the same function as the Dir soft key when the phone is idle.

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