Siemens TC35 Terminal User Manual page 18

Signal PIN I/O
name
MICN 1
MICP 4
EPN 2
EPP 3
16
Interface description
Handset connector
2
1
Purpose of the connectors/connections
Description
DC:O Microphone input
AC:I minus
DC:O Microphone input
AC:I plus
O Earpiece
connector
O Earpiece
connector
1 MICN
2 EPN
3
3 EPP
4 MICP
4
Parameters
DC (no load):
U = 6 . 0 V ± 1 0 %
0
(MICP)
U =0V (MICN)
0
R = 4.7k (MICP)
i
R = 4.7k (MICN)
i
AC: U = 1.03V
imax
= 2 k Ω
Z
i
Gain range:0...42dB
U = 3 . 7 V
0max
= 1 5 Ω
R
i
Gain range:–18...0dB
PP
, no load
PP