YEALINK NETWORK TECHNOLOGY CO. LTD. YLT27G User Manual

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3. Connect the network and power, as shown below:
You have two options for network and power connections. Your system administrator will advise you 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 phone user 
interface or web user interface.
PC Connection
   (Optional)
IEEE 802.3af compliant
    
 PoE Hub/Switch
Startup
A
B
AC Power Option
PoE ( Power over 
Ethernet ) Option
PC Connection
   (Optional)
Power Adapter
     (DC 5V)
2
Note: 
The IP phone should be used with Yealink original power adapter (5V/1.2A) only. The use of the third-party
         power adapter may cause the damage to the phone. If you are connecting a PC to your phone
we recommend
         that you use the Ethernet cable provided by Yealink.
      
   I
f inline power (PoE) is provided, you don’t need to connect the power adapter. Make sure the hub/switch is 
         PoE-compliant.