Siemens Hicom 150 E Office - Connection Examples; Connection Via et Adapter Box

10.4.2 Connection via ET adapter box
Depending on the functions desired, an entrance telephone can be connected via an ET adapter box
(S30817-Q930-A200/300, with starting contact).
A voice connection to the entrance telephone is possible from any telephone.
Door opener function possible from any telephone.
Doorbell signalling in accordance with call allocation.
Figure 10-3 ET adapter connections
10.4.2.1 Connection examples
Hicom 150 E Office Rel.1.0 Service Manual - 10 Special equipment
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