Siemens TC35 User Manual page 17

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 ±10 %
0
(MICP)
U = 0 V (MICN)
0
R = 4.7 k (MICP)
i
R = 4.7 k (MICN)
i
AC: U = 1.03 V
imax
= 2 k Ω
Z
i
Gain range: 0 ... 42 dB
U = 3.7 V
0max
= 15 Ω
R
i
Gain range: –18 ... 0 dB
PP
, no load
PP