U407 Basic interface, telephone

Plug connector overview

NumberX-pin, colourDescription
X403854-pin, blackPlug connector Basic interface, telephone

Pin assignments at plug connector X4038

PinTypeDescription / Signal typeConnection /
Measuring notes
1MGroundGround connector
   
2MGround signalVoice input Microphone
   
3EPositive signalVoice input Microphone
   
4ETelephone mute signalVoice input Telephone connector
   
5ESignalVoice input Telephone connector
   
6ENight light signalTelephone connector
   
7E/AI-bus signal lineI-bus connector Telephone connector
   
8EVoltage supply terminal RUnloader relay terminal R
   
9EVoltage supply terminal 30Fuse F57
   
10ESignal, terminal 58gEject box
   
11ETerminal 30Eject box
   
12ETerminal 31Eject box
   
13MGround signalEject box
   
14 Not used 
   
15MShieldShield Microphone
   
16MAudio groundEject box
   
17MTerminal 31Ground connector
   
18EVoltage supply terminal 30Fuse F57
   
19 Not used 
   
20 Not used 
   
21 Not used 
   
22 Not used 
   
23 Not used 
   
24 Not used 
   
25 Not used 
   
26 Not used 
   
27 Not used 
   
28MShieldEject box
   
29 Not used 
   
30 Not used 
   
31 Not used 
   
32 Not used 
   
33 Not used 
   
34 Not used 
   
35 Not used 
   
36 Not used 
   
37ESignal Eject boxEject box
   
38ESignal Eject boxEject box
   
39ESignal Eject boxEject box
   
40ESignal Eject boxEject box
   
41ESignal Eject boxEject box
   
42ESignal Eject boxEject box
   
43ESignal Eject boxEject box
   
44ESignal Eject boxEject box
   
45ESignal Eject boxEject box
   
46 Not used 
   
47 Not used 
   
48ESignal Eject boxEject box
   
49EPositive signalEject box
   
50 Not used 
   
51 Not used 
   
52ESignal Eject boxEject box
   
53MGround signalVoice input Telephone connector
   
54EPositive signalVoice input Telephone connector