User Guide for the SIP-T28P IP Phone 
12 
2)      Connect the handset and optional headset 
 
Note 
3) Connect the network and power 
You have two options for power and network connections. Your system administrator will 
advise you which one to use. 
  AC power (Optional) 
  Power over Ethernet (PoE) 
AC Power (Optional) 
To connect the AC power: 
1.  Connect the DC plug on the power adapter to the DC5V port on the phone and 
connect the other end of the power adapter into an electrical power outlet. 
2.  Connect the included or a standard Ethernet cable between the Internet port on the 
phone and the one on the wall or switch/hub device port. 
 
   
A headset is not included in the packaging contents. Contact your system administrator 
for more information.