Rear View
The next figures show the connections on the bottom of the different devices.
COMfortel® D-400
aNetwork port
bDirect PC connection via network cable
cHeadset socket
dReceiver socket
eUSB port for a COMfortel D-Wireless (EZC-5200BS) Bluetooth dongle.
fRubber cover: to connect a COMfortel D-XT20/D-XT20i key extension module, remove the cover and attach it to the extension module.
gUSB port, exclusively for connecting a COMfortel D-XT20/D-XT20i key extension module.
COMfortel® D-XT20
aSocket into which you plug the COMfortel D-XT-PS wall-mounted power supply (if you connect two or more key extension modules)
bUSB port (e.g. for connecting another COMfortel D-XT20/D-XT20i key extension module)
cMicro-USB port: use this to connect the telephone to the key extension module