D0730 ADSL (Asynchronous Digital Subscriber Line)
‘Broadband’ Filter
When an analogue PSTN telephone line also carries ADSL (Broadband) signals and it is used by a
security system (e.g. Control Panel, Dualcom, DigiCom), then a Security ADSL filter MUST be used.
A filter is used to separate the analogue telephone signals from the ADSL (Broadband) digital data signals
because the
phone or security system
may be
disrupted or completely inhibited
if ADSL (Broadband)
digital data is allowed into them from the telephone line.
PSTN Connection
using the
D0730 Security ADSL Filter
Fig 2
The Dycon D0730 Security ADSL Filter is designed specifically for use with secu-
rity systems. It includes spare terminals to aid wiring that are labelled ‘Pass Through’.
This item meets all of the requirements of the British and European telephone,
safety and security standards. See Fig 1.
Other types of filter and plug-in filters
should not
be used for
Series Connection
of a security system
to the telephone line.
Plug-in types are for use with tel-
ephones, fax machines etc.
Plug-in filters are available from the Telephone Serv-
ice Provider and many electrical distributors including:
CPC
Part Number: TE 04367 or TE04070
Farnell
Part Number: 418-5328 or 506-0205
Maplin
Part Number: A61AK or A72AG
Serial Connection
to a PSTN (and Broadband) telephone line is shown in Fig 2.
The installer must ensure that:
D0730
Security ADSL Filter
Fig 1
1
1. The user’s telephone wiring is disconnected from the NTP and reconnected to the D0730 ADSL Filter only.
2. The NTP connects
only
to the D0730 ADSL Filter and to
no other
wiring or telephone sockets.
3. The wiring between the NTP and the the D0730 ADSL Filter can
not
be unplugged by the user.
4. The user can
not
plug a phone/fax etc. into the NTP.
5. The terminals 2,3 & 5, A & B and A1 & B1 are connected exactly as shown.
DigiModem
Dualcom
etc.
AH073000-D01 18/6/2005
