Ramsey Electronics SP1, Руководство пользователя

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INTRODUCTION TO THE RAMSEY SP1 SPEAKERPHONE:
There are, of course, all kinds of telephone accessories. Also just as various
"telephone amplifier" schemes have been around for years, the name
"speakerphone" is now a generic part of today's telephone vocabulary,
referring to hands-off talk-and-listen communicating. If we look at catalogs or
in phone stores, we also see that true hands-free speakerphones command
a handsome price or else may be designed only as accessories requiring
connection with a separate telephone.
The Ramsey SP1 Speakerphone gives you full, state-of-the-art
speakerphone technology...with a difference. First, it is a complete stand-
alone telephone for incoming calls. Use some other phone or dialer right
along with it only if you have a frequent need to initiate those unique
speakerphone-style calls. Otherwise, you can use your SP1 to answer all
incoming calls, handling them while you work or play. The SP1 is designed to
be practical and understandable, fun to build and to customize for your own
needs and decor.
The Ramsey Speakerphone is designed to let you stay in charge of your
time...on a budget. Think about the difference between that call you wish or
plan to place...and all those other calls that you ANSWER, whether you
wanted or expected them or not.
A pair of SP1's also makes a great hands-free INTERCOM system for which
you’ll imagine dozens of practical applications. You’ll figure out how to set
them up so they can serve as intercoms AND convenient speakerphones.
The kit style of the Ramsey SP1 lets you choose the type of enclosure and
the size of speaker for this very personalized call-answering or intercom
system. You will build a quality system around a high-tech Motorola IC, and
you'll never have to discard a plastic mystery box that has quit working for
you. The Ramsey SP1 Speakerphone PC board and circuit design are solid,
rugged applications of today's IC-based telephoning technology.
You may wish to read ahead and learn how to use the SP1 and how it works
before beginning actual kit construction. Build and learn about the Ramsey
SP1, and no other electronic telephone will ever again seem so intimidating
or mysterious!