T21(2).pdf, Welcome, Startup – Yealink SIP-T21 User Manual
Page 2: Packaging contents assembling the phone

Startup
1. Attach the stand, as shown below:
2. Connect the handset and optional headset, as shown below:
3. Connect the network and power, as shown below:
The following items are included in your package. If you find anything missing,
contact yoursystem administrator.
Packaging Contents
Assembling the Phone
Note: PoE is only applicable to the SIP-T21P IP phone. If inline power (PoE) is provided, you don’t need
to connect the power adapter. Make sure the Etherne cable and hub/switch are PoE compliant.
Stand
Power Adapter
(Optional)
Handset Cord
Handset
IP Phone
Ethernet Cable
Quick Installation
Guide & Quick
Reference Guide
Note: The headset should be purchased separately.
SIP-T21P & SIP-T21 Quick Installation Guide
www.yealink.com
You have two options for network and power connections. Your system administrator will
advise you on which one to use.
After the IP phone is connected to the
network and supplied with power, it automatically
begins the initialization process. After startup,
the phone is ready for use. You can configure the
phone via web user interface or phone user interfafce.
Welcome
Initializing... please wait
Desk Mount Method
A
B
Wall Mount Method
1
2
A
AC Power Option
PC Connection
(Optional)
Power Adapter
(DC 5V)
B
PoE ( Power over
Ethernet ) Option
PC Connection
(Optional)
IEEE 802.3af compliant
PoE Hub/Switch