Ascotel IntelliGate 2025/2045/2065
804 Cabling interfaces Part 4
7.5.3 General bell
Connection via potential-free relay contact
[1] External ringing voltage source
[2] Maximum contact loading 60 VDC, 0.5 A / 50 VAC, 0.5 A
[3] On mainboard2065 the general bell can be connected either on Pin 1/2 or Pin 3/4
= Pin 1
Fig. 4.73: Connecting the general bell to the central relay with floating contacts on the 2025 /
2045 mainboard (left) and 2065 mainboard (right)
The relay on the mainboard can only be used if there is an external ringing voltage
source. The maximum number of general bells connected in parallel depends on
the power of the ringing voltage source.
It is possible to use commercial auxiliary bells designed for connection in parallel
to analogue terminals as a general bell.
Connection via Analogue User-network interface a/b
One analogue user-network interface per system can be configured in such a way
that it is also used for connecting a general bell. This eliminates the need for an
external ringing voltage source. However the impedance of the connected gen-
eral bell (or total impedance in the case of several devices connected in parallel)
must not fall below 1 kΩ (see also "General Bell on an Analogue user-network
interface a/b", page 522).
Tip:
Both connection types can also be combined if several general bells are
used.
b/a
[1]
[2]
b/a
b/a
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[1]
[2]
[3]
2025 / 2045
2065
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