Yealink SIP-T21P User Manual

User Guide for the SIP-T21P IP Phone
viii
Local Directory ................................................................................................................ 28
Blacklist ............................................................................................................................ 38
Remote Phone Book ........................................................................................................ 40
Call History Management ................................................................................................ 42
System Customizations ...................................................................................................... 44
Logo Customization ........................................................................................................ 44
Headset Use .................................................................................................................... 45
DSS Keys .......................................................................................................................... 46
Account Management ................................................................................................... 54
Dial Plan ........................................................................................................................... 55
Emergency Number ........................................................................................................ 61
Live Dialpad .................................................................................................................... 62
Hotline .............................................................................................................................. 63
Basic Call Features ................................................................. 65
Placing Calls ....................................................................................................................... 65
Answering Calls ................................................................................................................. 67
Ending Calls ........................................................................................................................ 68
Redialing Numbers ............................................................................................................ 69
Recent Call In Dialing ........................................................................................................ 69
Auto Answer ....................................................................................................................... 70
Auto Redial .......................................................................................................................... 71
Call Completion ................................................................................................................. 72
Call Return ........................................................................................................................... 73
Call Mute ............................................................................................................................. 73
Call Hold/Resume ............................................................................................................... 74
Do Not Disturb (DND) ........................................................................................................ 75
Call Forward ....................................................................................................................... 78
Call Transfer ........................................................................................................................ 84
Call Waiting ........................................................................................................................ 86
Conference ......................................................................................................................... 86
Local Conference ............................................................................................................ 87
Network Conference ...................................................................................................... 87
Call Park .............................................................................................................................. 89
Call Pickup .......................................................................................................................... 90
Anonymous Call ................................................................................................................. 95
Anonymous Call Rejection ................................................................................................ 96
Advanced Phone Features ..................................................... 97
Busy Lamp Field (BLF) ....................................................................................................... 97
Call Recording .................................................................................................................... 99
Hot Desking ...................................................................................................................... 101
Intercom ............................................................................................................................ 103

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