Tfe-S Interface; Figure 3-45 Connections Of The Tfe-S Interface - Siemens HiPath 1100 Service Manual

Modules
Entrance telephone
3.11.1.2

TFE-S interface

This links an interface of system analog connections with an entrance telephone and a bell
button. This is controlled using a system that allows the connection of commercial-type passive
button pads. Each TFE-S interface requires its own power supply.
a/b
X4
VCC
Call detector
(
high impedance
5 mA
Figure 3-45 Connections of the TFE-S interface
Warning
7
In the analog interface, the a wire must be connected to the negative and the b wire
to the positive.
3-108
bell
Low-voltage detector
(high impedance)
)
≥
1
VCC
Mute
Voice circuit
amplifier
VCC
DC
AC
VCC
MIC power supply
ca. 44s44
TUE
Latch
electric
X3
TUE
AC
X3
AC
6 - 12V
Transformer
VCC
Button pad
MIC+
MIC-
X5
LS1
X5
LS2
KLI
X4 KLI
Bell button
Service Manual