Rear View
The next figures show the connections on the bottom of the different devices.
COMfortel D-100/D-110
a. Network port
b. Direct PC connection via network cable
c. Headset socket
d. Receiver socket
COMfortel D-200/D-210
a. Network port
b. Direct PC connection via network cable
c. Headset socket
d. Receiver socket
e. USB port (for COMfortel D-XT20/D-XT20i key extension module, USB headset, USB storage medium for firmware update)
f. Rubber cover: To connect a COMfortel D-XT20 key extension module, remove the cover and attach it to the extension module.
COMfortel D-XT20/D-XT20i
a. Socket for plugging in the COMfortel D-XT-PS wall-mounted power supply (if you connect two or more key extension modules)
b. USB port (exclusively for connecting another COMfortel D-XT20/D-XT20i key extension module)
c. Micro-USB port: Use this to connect the telephone to the key extension module