If you want to use a wired headset, physically connect your headset and activate the headset mode for use.


If you want to use a wireless headset, insert the Bluetooth USB dongle BT40 into the USB port on the back of the phone.


Headset Mode Activation/Deactivation


To activate the headset mode: 

1. Press  on the phone.

The HEADSET key LED illuminates solid green, and the icon   appears on the status bar of the touch screen when the headset mode is activated. When you tap the line key or the Answer soft key to answer an incoming call, the call is connected to your headset automatically. For more information on using the headset to answer a call, refer to Answering Calls on page 90.

With the handset on-hook, enter the desired number and tap the Send soft key, then the phone will place a call using the headset automatically. For more information on  


To deactivate the headset mode: 

1. Press  again on the phone.

The HEADSET key LED goes out, and the icon  disappears from the touch screen when the headset mode is deactivated.


Bluetooth Headset


The SIP-T48G IP phone supports Bluetooth. Bluetooth enables low-bandwidth wireless connections within a range of 10 meters (32 feet). The best performance is in the 1- to 2-meter (3- to 6-foot) range.


You can activate/deactivate the Bluetooth mode, and then pair and connect the Bluetooth headset with your phone. You can also disconnect and delete your Bluetooth headset from the phone.  


To activate the Bluetooth mode via phone user interface: 

1. Tap  ->Basic->Bluetooth.

2. Tap the On radio box of the Bluetooth field.



The IP phone scans the available Bluetooth headset automatically.

The touch screen displays the Bluetooth icon  and the Bluetooth device information (device name and MAC address).  



Before you pair a Bluetooth headset, check the indicator on the Bluetooth headset to make sure the Bluetooth headset is discoverable. For more information, refer to the documentation from the Bluetooth headset manufacturer.


To pair and connect your Bluetooth headset to your phone: 

1. Tap  ->Basic->Bluetooth.

2. Tap the found Bluetooth device to connect the Bluetooth headset to your phone

When there is no found Bluetooth devices on the touch screen, tap the Scan soft key to search the Bluetooth device.



The phone prompts you to enter the password.

3. Enter the PIN in the Password field.

The default PIN is “0000”.



4. Tap the OK soft key.

After a while, the Bluetooth headset is automatically connected to your phone. The touch screen displays as below:



The Bluetooth icon  appears on the touch screen.



With the Bluetooth headset paired and connected, you can use the Bluetooth headset to place and answer calls. For more information, refer to the documentation from the Bluetooth headset manufacturer.

Auto connection feature enables or disables the phone to connect with the Bluetooth headset automatically. This feature is enabled by default.


To disable auto connection feature via phone user interface: 

1. Tap  ->Basic->Bluetooth.

The touch screen displays the paired and connected Bluetooth headset.



2. Tap  after the desired Bluetooth headset.  

3. Tap the Off radio box of the Auto Connect field.



To change the priority of paired Bluetooth devices: 

1. Tap  ->Basic->Bluetooth.

2. Tap  after the desired Bluetooth headset.

3. Tap Move Up or Move Down from the prompt list.

The top one has the highest priority. When there is no Bluetooth headset connected, the phone will automatically connect to a Bluetooth headset with the highest priority.

You can disconnect the Bluetooth headset from your phone. When you disconnect the

Bluetooth headset, it still displays in the Bluetooth Devices list. You can easily connect it to your phone again.


To disconnect your Bluetooth headset from your phone: 

1. Tap  ->Basic->Bluetooth.

2. Tap the connected Bluetooth headset.



The Bluetooth headset is disconnected. To connect it to your phone again, tap the Bluetooth headset again.

You can delete your Bluetooth headset from your phone. When you delete the Bluetooth headset, it disappears from the Bluetooth Devices list. To connect it to your phone again, you need to scan and connect it again.


To delete your Bluetooth headset from your phone: 

1. Tap  ->Basic->Bluetooth.

2. Tap  after the desired Bluetooth headset you want to delete.

3. Tap the Delete soft key from the prompt list.



The touch screen prompts the following warning “Delete the selected item?”.



4. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.

You can also delete all headsets by tapping the Delete All soft key.


To deactivate the Bluetooth mode via phone user interface: 

1. Tap  ->Basic->Bluetooth.

2. Tap the Off radio box of the Bluetooth field.



The Bluetooth icon  disappears from the touch screen.

Bluetooth mode is configurable via web user interface at the path Features->Bluetooth