Yealink SIP-T21P User Manual

Customizing Your Phone
63
3. Enter the desired delay time in the Inter Digit Time (1~14s) field.
The default delay time is 4s.
4. Click Confirm to accept the change.
Note
You can dial a hotline number immediately upon lifting the handset, pressing the
Speakerphone key or pressing a line key. You can also configure a delay, where the
phone will dial out the hotline number automatically after the specified period of time.
To configure the hot line number via phone user interface:
1. Press Menu->Features->Hotline.
2. Enter the desired number in the Number field.
3. Enter the delay time (in seconds) in the Hotline Time-out field.
The valid values range from 0 to 10.
4. Press the Save soft key to accept the change or the Back soft key to cancel.
Hotline is configurable via web user interface at the path Features->General
Information.
Live dialpad is configurable via web user interface only.

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