User Guide for the SIP-T27G IP Phone 
70 
Headset Use 
If you want to use a wired headset, physically connect your headset to the phone and activate 
the headset mode for use. For more information on physically connecting a headset, refer to 
Phone Installation on page 16. 
If you want to use a wireless headset, insert the Bluetooth USB dongle into the USB port at the 
back of the IP phone. For more information on using a Bluetooth headset, refer to Bluetooth Headset 
on page 72. 
This section provides an introduction to wired headset use. 
Note   
Headset Mode Activation/Deactivation 
To activate the headset mode:   
1.  Press            on the phone. 
The HEADSET key LED illuminates solid green. 
Press the line key or the Answer soft key to answer an incoming call. The call will be 
connected to your headset automatically. 
Enter the desired number and then press the Send soft key, the phone will then place a call 
using the headset automatically. For more information on using the headset to place a call, 
refer to Placing Calls on page 100. 
To deactivate the headset mode: 
1.  Press            again on the phone. 
The HEADSET key LED goes out. 
Headset Prior 
You can use headset in priority when headset prior feature is enabled. This feature is especially 
useful for permanent or full-time headset users. 
   
If both a Bluetooth headset and a wired headset are connected, only the Bluetooth headset can 
be used. 
To use headset, make sure the headset mode is enabled. Contact your system administrator for 
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