Yealink SIP-T21P User Manual

User Guide for the SIP-T21P IP Phone
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b.) If you select Busy Forward, you can enable it for a specific account.
1) Press or , or the Switch soft key to select Enable from the Busy
field.
2) Enter the destination number you want to forward all incoming calls to
when the phone is busy in the Forward to field.
3) (Optional.) Enter the busy forward on code or off code respectively in the
On Code or Off Code field.
You can also enable busy forward for all accounts. After busy forward was
enabled for a specific account, do the following:
1) Press or to scroll to the Busy field.
2) Press the All Lines soft key.
The LCD screen prompts “Copy to All Lines?”.
3) Press the Ok soft key to accept the change or the Cancel soft key to cancel.
c.) If you select No Answer Forward, you can enable it for a specific account.
1) Press or , or the Switch soft key to select Enable from the No
Answer field.
2) Enter the destination number you want to forward all unanswered incoming
calls to in the Forward to field.
3) Press or , or the Switch soft key to select the ring time to wait
before forwarding from the After Ring Time field.
The default ring time is 12 seconds.

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