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Installation
129
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
FXS mode: General bell
One FXS interface per communication server (and therefore also per AIN) can be
configured for the connection of a general bell. It is possible to use commercial
auxiliary bells designed for connection in parallel to analogue terminals as a gen-
eral bell. However the impedance of the connected general bell (or total imped-
ance in the case of several devices connected in parallel) must not fall below 1 k
Ω
.
The ringing voltage is 48 VAC. An 48 V AC relay must be interposed if 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.
Fan-out panels can also be offset, e. g. as floor distributors.
Fig. 63
Fan-out panel FOP
48 VAC
48 VAC
a
b
FXS interface