Yealink SIP-T21P User Manual

User Guide for the SIP-T21P IP Phone
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designated as phone C. The user dials the call park retrieve code to retrieve the
parked call.
The system establishes call between phone C and B.
Note
You can use call pickup to answer someone else’s incoming call on the phone. The
SIP-T21P IP phone supports directed call pickup and group call pickup. Directed call
pickup is used for picking up a call that is ringing at a specific phone number. Group call
pickup is used for picking up a call that is ringing at any phone number in the group. The
pickup group should be predefined, contact your system administrator for more
information.
You can pick up an incoming call by using the DPickup/GPickup soft key. To use call
pickup, you need to configure the call pickup code beforehand on a global or per-line
basis via web user interface.
Note
Directed Call Pickup
To enable the directed call pickup via web user interface:
1. Click on Features->Call Pickup.
2. Select Enabled from the pull-down list of Directed Call Pickup.
The call park code and call park retrieve code are predefined on the system server.
Contact your system administrator for more information.
If the parked call is not retrieved within a period of time assigned by the system, the
phone performing call park feature will receive call back.
If there are many incoming calls at the same time, pressing the GPickup soft key on the
phone will pick up the call that rings first.

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