TEL-14 TWO-CHANNEL TELEPHONE INTERFACE
1- 1
1
This chapter describes
the five most common
modes of operation.
OPERATION
INTRODUCTION
This chapter describes how to use the TEL-14 two-channel auto-
nulling telephone interface. The TEL-14's panel controls and
internal option switches can select any one of a large number of
modes of operation. This chapter describes the five most
common modes:
•
Intercom-station telephone access
•
Self-service dial-in
•
Manual call screening
•
Intercom-to-intercom
•
Party-line dial-in
Intercom station operators will normally access telephone lines with
the TEL-14 in the
“intercom-station telephone-access” mode.
However, station operators may need to check with their system
operator for further instructions if a
TEL-14 has been configured in a mode not described here.
Technical personnel should refer to Chapter 2, “Installation,” for
details on configuring the TEL-14's internal option switches for each
of these modes (and any others possible).
The next section, “Description,” covers the basic features of the
TEL-14, including its front-panel controls and indicators. The option
switch settings are described for each mode, but they are covered
more thoroughly in Chapter 2. The final sections cover the use of
the TEL-14 in each of the five modes.
Important
: When the TEL-14 is first connected to a new telephone
line, its automatic
nulling process must be performed before it
can be used.
This process consists of calling each line, depressing
the Auto Answer button for 5 seconds, and then waiting several seconds
while the automatic procedure is carried out.
It may not be
possible to
make outgoing calls on the telephone line until this procedure is
performed. Refer to the Automatic Telephone Line Null section of this
Operation Manual.
Note: Other configurations are possible, in addition to the configurations
described here. However, certain configurations may result in undesirable
crosstalk, as a result of the limitations of the TEL-14's circuitry. For example,
consider a news reporter who calls into the matrix. You would like to provide
the reporter with a program feed, and at the same time route his voice in
through the matrix to a live broadcast. However, the TEL-14 cannot
perfectly isolate his talk from his listen, so some of his outgoing
program feed may leak into his incoming voice.
Summary of Contents for ECLIPSE TEL-14
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