Siemens Hicom 150 E Office - Opa; Pft1; Pft4

3.4.6 OPA
Introduction
The connection between the CBFC and the first option board in OfficeCom/OfficePoint is established
with the OPA option adapter.
Interfaces
Figure 3-56 OPA interfaces (S30807-Q6920-X)
3.4.7 PFT1 / PFT4
Introduction
In the event of a power failure or system errors in Hicom 150 E OfficePro, up to
1 analog trunk line with a PFT1 (power failure transfer) board and
4 analog trunk lines with PFT4 board
can be transferred (PFT) to specific (POT) plain old telephones (Figure 3-57).
It may be necessary to adapt the signalling method to that of the connected trunk if the plain old
telephone is to be used to conduct outgoing calls.
PFT by means of PFT1/PFT4
Hicom 150 E Office Rel.1.0 Service Manual - 3.4 Options
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