Our Distinctive Ring Detector works with
distinctive ring service provided by a local telephone company. Names for the
service vary from company to company.
The service is an update of early-20th-century
"party line service" which allowed several families to share one telephone
circuit, but with different ringing patterns to indicate if a call should be
answered or ignored.
With distinctive ringing, the phone company can
provide a 'normal' phone number plus one or more 'phantom' or 'derived' phone
numbers. This way one phone circuit can be used, for example, for business and
home, or parents and kids, or people, computer and fax, etc.
When you have the service, you can tell people,
for example, to call 555-1789 for voice calls and 555-1933 to send a fax.
Your telephone company provides service with up
to three different phone numbers on the same circuit ('line" or "pair"). These
ring patterns are made up of various combinations of ring patterns. Examples of
the different ring patterns could be:
Original Number: 1 regular ring
Second Number: 2 short rings
Third Number: 3 rings (two short and one long)
The Distinctive Ring Detector automatically
analyzes the ring pattern received from the phone company (without any rings
being heard) and then directs the call to one of the jacks on the back of the
detector where your phones or other devices are connected. The appropriate
phone(s) or fax machine will then ring so it can be answered. A fax machine
should answer automatically.
Outbound calls are handled normally. The first
device to seize a line has it exclusively until the end of a call.
Barge-in protection stops a second person from
interrupting a call in progress. When a second phone or the fax machine is
"picked up" on another phone number a busy signal will be heard. However, two
people can be on one number at one time for a conference call.
The mode selection switch allows you to
configure your detector to operate with either two or three phone numbers.