IMPORTANT!
Briefly stated, the
programming for
PARAMETER 07
determines how many Hi/Lo
handshakes will be produced
by each of the CP-220A’s
slots. Any selections made in
PARAMETER 07 also have
a bearing on the order in
which the remaining
handshakes are sent, which
is illustrated in the table at
right.
When greater flexibility is
required – in terms of the
sequence in which a Line
Card produces its
handshakes – you must also
program PARAMETER 62
(on page 2-59), whose
settings, when used in
conjunction with the number
of Hi/Lo handshakes
specified in PARAMETER
07, will allow for complete
customization.
Note that PARAMETER 62
is available only with
Versions 3.91 (and above) of
the CP-220A’s software (see
page 2-5), and will apply only
to REC-11 Line Cards
whose NLC (New Line Card)
software is Version 3.0 (or
above).
Examples of coordinating
programming options
between PARAMETER 07
and 62 can be found on
page 2-60.
The following table lists the sequence of handshake signals generated for
each of the three choices (0, 1, and 2) available for this parameter:
NUMBER OF HI/LO SEQUENCE OF HANDSHAKE
HANDSHAKE SIGNALS SIGNALS GENERATED
PROGRAMMED
0 2300 Hz 1400 Hz
1 Hi/Lo 1400 Hz 2300 Hz
2 Hi/Lo Hi/Lo 1400 Hz 230 Hz
If you're not sure if the Communicators reporting to any Line Card require
the
Hi/Lo
handshake to produce data in the
Superfast
or
Point I.D.
format,
accept the default (1) for
PARAMETER 07
(see page 2-16). This will cause a
single transmission of the
Hi/Lo
handshake, which, if ignored, produces
first the Low Frequency handshake (1400 Hz); then, if no response is
received, it produces the High Frequency (2300
Hz) handshake, to
ultimately effect communication with the subscriber.
However, if it's known that the all the accounts reporting to a single Line
Card
do not
require the
Hi/Lo
handshake, it's best, in the interests of
transmission time, to program the parameter with "0" (zero) so that
no
Hi/Lo
handshakes are generated by the Line Card.
Programming Procedures:
If it is necessary to change the number of
Hi/Lo
handshakes that
Slot 1
will
generate after picking up a call:
1.
Depress the
key once. The [1] indicating the quantity of [HI/LOs]
will begin to flash. The number of such handshake signals produced by
Slot 1
may be altered at this time.
2. Press the key representing the number of "Hi/Los" appropriate for
Slot 1
(i.e., press for two such handshakes). The chosen number of "Hi/Los"
will be assigned to
Slot 1.
3. Press the
key so that the [1] after [SLOT] flashes again.
4. To change the number of "Hi/Los" assigned to a
different
slot, press the
key corresponding to the desired
slot
(e.g.,
8
); the chosen
Slot Number
and the number of "Hi/Los" currently assigned to it will be displayed.
5. Repeat the above steps for each
Slot Number
for which a change in the
number of "Hi/Los" is required. Slots
1 through 8
can be programmed to
produce up to 2
Hi/Lo
handshake signals; all other values will be
ignored.
Default:
The factory has pre-programmed each slot to generate one
Hi/Lo
handshake.
CP-220A Central Station Receiver Section 2: Programming the CP-220A Page 2-15
Hook-Up and Installation Manual