Tel: 0800 975 0960
Fax: 01844 213674
150 - CALL SIGN Switch
have used this handy switch to connect remote time terminals via
modems over the public telephone network using the BT additional
telephone number piggy-backed onto a lightly used existing phone line
like a fax.
Telecoms Call Sign Service provides an additional telephone
number for your telephone line. This is identified by a distinctive
long ring when called.
BT 150 CALL
Switch uses BT's Distinctive
Sign' Ringing to recognise and switch calls.
BT150 Call Sign switch will recognise the distinctive ringing and
route these calls to the Call Sign socket, whilst calls to your main
number are routed to Standard socket.
you are a home worker you can have different numbers for home and
business, or in a small office different numbers for phone and fax,
without the expense of installation and rental of an additional line.
BT150 switches the line dependant upon the number called so you can
have whatever equipment you want attached phone, answer-phone, fax or
modem. It really is foolproof!
note: The BT150 switch blocks ADSL
modem signals when fitted between the Master BT line socket and the
filter. The BT150 should be fitted to the telephone output of an ADSL filter.
applications you can have a different phone number for calls
to your fax or computer.
applications if you are blessed with popular teenagers you
can provide them with their own number for their friends to call. No
more getting up to answer the phone in the middle of your favourite
soap or documentary. Live-in Grandparents can have some independence
with their own phone.
service costs approximately £6.50 per quarter, or as little as
£1.50 if you already have other Select
have now encountered some problems with this device when used in
conjunction with a BT line carrying an ADSL-2 internet connection.
This only relates to certain fax machines connected to the Call Sign
output of the unit and does not happen with former ADSL line signals.
It does not affect the use of an alternative telephone connected to
the Call Sign output.
seems to be the case is that the harmonic carrier signal present on
internet enabled telephone lines is, in the case of an ADSL-2 signal,
able to leek through the ADSL filters and trigger some fax machines
or fax modems into answering the call even though a call has been
directed to the normal telephone numbered output. The user then hears
the shrill fax answering noise and cannot continue a conversation
with the caller.
are currently seeking an ADSL filter of sufficient quality to
recommend that will eliminate this problem but so far we have not
found one that works well enough.
button to receive further advice.