Yealink SIP-T38G - Manual (Page 23)

Getting Started
13

Connect the Network and Power
1) Attach the Stand:
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)
The headset should be purchased separately.