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 COMfortel D-Wireless (EZC-5200BS), USB headset, USB mass storage)
fRubber cover: To connect a COMfortel D-XT20 key extension module, remove the cover and attach it to the extension module.
gUSB port, exclusively for connecting a COMfortel D-XT20 or COMfortel D-XT20i key extension module.
COMfortel D-XT20/D-XT20i
aSocket for plugging in the COMfortel D-XT-PS wall-mounted power supply (if you connect two or more key extension modules)
bUSB port (exclusively 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