Installation instructions
Adesys bv, Wateringen, NL
32
Octalarm-T2 / T4 / T8 / T16
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16.5.1.1 General guidelines for ISDN
The following guidelines should be taken into account for a reliable ISDN wiring:
•
No more than 2 cables may lead from an NT1 connection to peripheral equipment. No star
connections may be used to connect more peripherals.
•
The S box cable may not be longer than 150m.
•
For cables up to 10m in length, standard round 4- or 8-core telephone wires are sufficient,
also called norm88 cables. For longer cables, use UTP (Unshielded Twisted Pair) of CAT-3
category or better.
•
The cable should be closed at both ends with 100
Ω
between the two cores or each pair of
cores. For most ISDN peripherals:
•
NT1: resistors can be adjusted,
•
Telephones, faxes, modems etc.: some can be adjusted, but most do not have resistors,
•
Telephone switchboards: some can be adjusted, but most have standard resistors installed.
•
Octalarm-T: resistors can be adjusted.
•
If necessary, additional disconnection resistors, in the form of connecting plugs, splitters, or
integrated in connection boxes, are available at any telecommunications store.
•
Changing cores or pairs of cores will cause improper functioning (unlike with analogue
lines).
16.6 Placing and connecting the GSM antenna
(only for Octalarm GSM model)
16.6.1 Internal
antenna
Connect the two antenna plugs in the connection compartment to one another. Connect the antenna
provided to the connector on the outside of the cover. Always place the antenna upright for maximum
signal strength.
16.6.2 External
antenna
Place the external GSM antenna using the instructions in the set-up manual provided. In areas with
reduced reception, place the antenna as high as possible, and always upright. Connect the cable
provided to the connector in the connection compartment.
After placing the antenna, always check the field strength of the signal. Press one of the arrow
buttons to call it up on the display. Changes in the signal strength are always announced very
slowly, please take this into account when moving the antenna, for example.
16.7 Placing the SIM card
(only for Octalarm GSM model)
The SIM card needed for the mobile network is placed as follows:
-
Switch off the Octalarm completely,
-
Use a sharp object to press the yellow button next to the screw connectors. This will release the
SIM card,
-
Place the SIM card in the holder and slide it into the alarm,
-
Switch the Octalarm on,
-
Enter the PIN code of the SIM card using prog. 41, “adjusting dialler” (factory setting: 0000).
Using a so-called Prepay SIM card is highly unadvisable for alarm purposes. The mobile network
