Interface description – Siemens Terminal TC35 User Manual
Page 18
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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 . 0 V ± 1 0 %
(MICP)
U
0
=0V (MICN)
R
i
= 4.7k (MICP)
R
i
= 4.7k (MICN)
AC: U
imax
= 1.03V
PP
Z
i
= 2 k
Ω
Gain range:0...42dB
MICP
4
DC:O
AC:I
Microphone input
plus
EPN
2
O
Earpiece
connector
U
0max
= 3 . 7 V
PP
, no load
R
i
= 1 5
Ω
Gain range:–18...0dB
EPP
3
O
Earpiece
connector
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