Siemens TC35 Terminal - Handset Connector Pinout and Parameters

16
Interface description
Handset connector
Purpose of the connectors/connections
2
1
3
4
1 MICN
2 EPN
3 EPP
4 MICP
Signal
name
PIN I/O Description Parameters
MICN 1 DC:O
AC:I
Microphone input
minus
DC (no load):
U
0
=6.0V±10%
(MICP)
U
0
=0V (MICN)
R
i
=4.7k (MICP)
R
i
=4.7k (MICN)
AC: U
imax
=1.03V
PP
Z
i
=2kΩ
Gain range:0...42dB
MICP 4 DC:O
AC:I
Microphone input
plus
EPN 2 O Earpiece
connector
U
0max
=3.7V
PP
, no load
R
i
=15Ω
Gain range:–18...0dB
EPP 3 O Earpiece
connector