IMPORTANT!
Before programming
PARAMETER 62, refer
to
PARAMETER 07 (on
page 2-15), which is
used to specify the
number of
Hi/Lo
handshakes generated
by each of the
CP-220A's slots.
PARAMETER 07 must
be programmed if
Hi/Lo
handshakes are to be
used in
PARAMETER 62.
Like
PARAMETER 62,
PARAMETER 07 also
employs a handshake
sequence, but it is
linked to the number of
Hi/Lo handshakes
selected. Any
handshake sequence
programmed in
PARAMETER 62 will
override that which
would apply if based on
the programming in
PARAMETER 07 (see
text).
Note that
PARAMETER 62 is
available only with
Versions 3.91 (and
above) of the
CP-220A's software
(see page 2-5), and
applies only to REC-11
Line Cards whose NLC
(New Line Card)
software is Version 3.0
(or above).
Examples of the
interaction between
PARAMETERS 07 and
62 can be found on
page 2-62.
There are three kinds of
handshake
signals that can be produced by the
CP-220A:
•
The
2300 Hz
(Hertz, or
cycles per second
) handshake signal is a "high
frequency" tone that is generally interpreted by Digital Communicators
as an "invitation" to communicate in a
High Speed
format.
•
Similarly, the
1400 Hz
handshake signal is a "low frequency" tone that
is generally sent by the Receiver if there is no response to its initial
2300 Hz handshake signal. The 1400 Hz tone invites the Digital Dialer
to communicate in a
Low Speed
format.
•
The
Hi/Lo
handshake signal is really two distinct tones that use both
the 2300 Hz and 1400 Hz frequencies. It is used with the
ADEMCO
High Speed (Superfast), ADEMCO Express
and
ADEMCO
Point I.D.
(i.e.,
Contact I.D.
) communication formats. In the event that there are
ADEMCO dialers reporting in these formats, it will be necessary for the
CP-220A to transmit at least
one
Hi/Lo handshake signal.
NOTE: See
Appendix B
for additional information.
Digital Communicators, after receiving a handshake signal from the Central
Station, will respond only if the handshake corresponds to the data format
the Dialer has been programmed to send. If the handshake is not responded
to, the CP-220A will produce an alternate handshake that the Dialer should
find compatible.
Programming Options:
The programming for
PARAMETER 62
allows you to specify the sequence in
which any Line Card's handshake tones will be produced, and, in
conjunction with
PARAMETER 07,
the
number
of
Hi/Lo
handshakes (up to
two) that will occur in the sequence.
Through
PARAMETER 62,
each Line Card's handshake sequence can
contain the following handshake tones in any order desired:
• 2300 Hz
• 1400 Hz
• Hi/Lo (2300 Hz/1400 Hz)
The option also exists to program [NONE] for any Line Card. Selecting
[NONE] prevents any handshake programmability in
PARAMETER 62
and
forces that Line Card to resort to the handshake sequences determined by
the selections made in
PARAMETER 07
(see page 2-15).
The table on the following page provides additional clarification and
examples of how
PARAMETER 62
and
PARAMETER 07
are related in
determining the sequence of handshake signals produced.
Page 2-60 Section 2: Programming the CP-220A CP-220A Central Station Receiver
Hook-Up and Installation Manual