Siemens Hicom 150 E Office - Entrance Telephones; Direct Connection Without et

10.4 Entrance telephones
Overview of connections
Figure 10-1 Overview of ET and ET/A connections
10.4.1 Direct connection without ET
Depending on the functions desired, an entrance telephone can be connected
directly.
A voice connection to the entrance telephone is possible from any telephone without support from a
door opener function or bell signalling
Figure 10-2 Entrance telephone, direct ET connection
Amplifier S30356-U5216-X
Door opener relay V23040-A002-B201
Capacitor B32231-A3105-K
Hicom 150 E Office Rel.1.0 Service Manual - 10 Special equipment
http://cmweb01.mch.pn.siemens.de/e_doku/en/h150/h15/30/sh/2/15_10.htm (4 of 17) [06/04/2000 13:08:49]