•
Polling and Alarm Transmission to the ARC is over IP (via the Ethernet
connection) or over GPRS. The ARC must also set the polling period
such that a communications fault will be detected with 20s.
•
The 2-wire Dial connection and pin inputs (where used) between the
IRIS Dialler and the alarm panel are monitored – see Installation
section. The ARC should enable monitoring of these connections.
Note –
In this case the Dialler complies with the highest level of Alarm
Transmission System Performance Criteria (ATS6).
If GPRS is used as a backup communications path this path
should be tested with a test call at least every month.
If PSTN or ISDN are used as a backup then the system
complies with Performance Criteria ATS 4. The ARC should
enable monitoring of this connection.
The IRIS Diallers have been assessed and certified against these standards by
Telefication B.V.
16.3 Safety
Care should be taken that when interconnecting telecommunications equipment
that only like interfaces are interconnected to avoid safety hazards.
The interfaces on the IRIS Dialler have the following safety classifications:
ISDN Interface:
TNV operating at SELV and suitable for connection to Basic rate
ISDN interfaces provided by a Public Telecommunications Operator or a Private
Branch exchange or similar equipment.
PSTN Interface:
TNV suitable for connection to analogue PSTN interfaces by a
Public Telecommunications Operator or a Private Branch exchange or similar
equipment.
Tel Interface:
SELV suitable for connection to the TNV interface of a single line
telecommunications equipment such as telephones, faxes etc.
Data Interface:
SELV suitable for connection to SELV interface on a data
terminal such as a PC COM port.
Power Interface:
SELV for connection to a 12V DC supply.
Inputs and Outputs:
SELV for connection to alarm output and input pins.
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