HumanTechnik A-4523-0 Instrucciones De Servicio página 20

Controls on the back
Ringer volume
slide switch
Light flash Tone/
on/off pulse dial
Controls on the underside
Headset port
(2,5 mm)
Audio-output
(3,5 mm)
20 English
Plug-in mains
adapter jack
Telephone cable
socket