Yealink SIP-T21P User Manual

Customizing Your Phone
47
To configure the line key via phone user interface:
1. Press Menu->Features->DSS Keys.
2. Select the desired line key, and then press the Enter soft key.
3. Select the desired key type from the Type field.
4. (Optional.) Select the desired key event from the Key Type field.
5. (Optional.) Select the desired line from the Account ID field.
6. (Optional.) Enter the corresponding value in the Value field.
7. (Optional.) Enter the corresponding value in the Extension field.
8. Press the Save soft key to accept the change or the Back soft key to cancel.
Line key is configurable via web user interface at the path DSSKey->Line Key.
Note
Common used line key features are explained in the following subchapters in detail:
 Speed Dial
 Voice Mail
 Directed Pickup
 Group Pickup
 DTMF
 Prefix
 Local Group
 XML Group
 XML Brower
 LDAP
 Conference
 Forward
 Transfer
 Hold
 DND
 SMS
 Group Listening
 Zero Touch
 Keypad Lock
 Directory
When the phone is idle, you can also long press the line key to configure it directly on the
phone.

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