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Switching relays ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
You can put the relays to diverse use as indi-
vidual switching relays R1 to R4 for other
functions. For example, you can use them to
connect a door hands free unit (TFE), an ad-
ditional bell, a door opener or lighting.
By programming, for each relay you define
whether it is to operate as a pulse relay (3
seconds on) or as an On/Off relay.
You can switch the relays from every inter-
nal or external telephone. You can also as-
sign internal phone numbers to the relays in
order to include them in the ringing distri-
bution settings, e.g. when connecting an
additional bell.
The relay contacts are bridged with a 1
kOhm, 100 nF spark quenching combina-
tion.
Maximum contact load: 30 VDC/1 A or 125
VAC/0,5 A, ohmic load.
To feed in external music on hold, connect
the headphone output of an audio device
(CD player, cassette recorder or stereo sys-
tem) with a 3.5 mm jack plug to the "exter-
nal MoH" (NF and GND) terminal on the top
pc board of the telephone system (drawing
2).
Set the volume of external music on hold on
the audio device. To set or check the vol-
Connecting external music on hold (MoH) ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
ume, call an internal user of the telephone
system from an external source. The
external connection is put on hold when the
internal user presses the inquiry key "R" or
the "brokering key". You hear the music on
hold and can adjust the volume.
Note: tunes played must be free from third-
party proprietary rights (GEMA-free).
Connecting an external auxiliary relay ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
The maximum contact load of the relays of
the PABX is 30 VDC / 1 A or 125 VAC / 0.5
A, ohmic load. If you want to switch equip-
ment or systems through the PABX relays
which require a higher contact load, you
must use a suitable auxiliary relay.
Drawing 6 shows the connection of the aux-
iliary relay, e.g. via the relay contacts R3.
The output voltage 24 VDC of the PABX can
be used as an operating voltage for an auxil-
iary relay with a rated voltage of 24 VDC.
The maximum load of the output voltage is
80 mA.
R11
X3
X8
GND
GND
+ 24 V, 80 mA
Relays 1 to 4
Auxiliary relay
rated voltage 24 V=
R12
R21
R22
R31
R32
R41
R42
Drawing
6: Connecting an external
auxiliary relay
