Installation
150
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
One FXS interface per communication server can be configured for the connection
of a general bell. It is possible to use commercial auxiliary bells designed for con-
nection in parallel to analogue terminals as a general bell. However the impedance
of the connected general bell (or total impedance in the case of several devices
connected in parallel) must not fall below 1 k
. The ringing voltage is 48 VAC. A 48
V relay must be interposed when connecting a large number of auxiliary bells.
Fig. 62
Connection for FXS mode: General bell
See also
"General bell on FXS interface" in the "System Functions and Features"
System Manual.
4. 7. 4
Fan-out panel FOP
All interface cards with 16 or more interfaces have four-fold assigned RJ45 sockets.
With the fan-out panel FOP a total of 10 four-fold assigned RJ45 sockets can be split
to individual RJ45 sockets.
The fan-out panel (FOP) takes up the space of one height unit in a rack and can be
fitted directly above or below the communication server.
Fig. 63
Front panel, FOP fan-out-panel
Fan-out panels can also be offset, e.g. as floor distributors.
48 VAC
48 VAC
a
b
FXS interface