Black Box TE120A User Manual page 22

4A. 4-Line units: 4-Line Caller ID units each have two RJ-14C two-line phone-input
connectors; they're designed to be directly connected to two-line phone jacks.
If your site has standard single-line jacks, and you need to attach three or four
lines to any given 4-Line unit, you'll need to consolidate the extra lines by
running the included two-to-one condenser cables from the other output of
the cross-connects to the Caller ID's phone-input connectors. (If you ever
need a replacement for one of these cables, please call Black Box for
technical support.)
If your site does have two-line phone jacks, you can run standard phone
cables instead.
4B. 8-Line units: 8-Line Caller ID units each have eight RJ-11C single-line phone-
input connectors; they're designed to be directly connected to standard
single-line phone jacks. If your site has single-line jacks, run standard phone
cables from the other output of the cross-connects to the Caller ID's phone-
input connectors. Only one of these cables is included, for initial testing
purposes; additional cables are available as product code EL04MS-MM.
If your site has two-line phone jacks, you'll need to use line splitters (not
included) to put the lines on separate connectors.
5. Run an RS-232 cable (not included) from the DB9 female RS-232 OUT port
of your single Caller ID unit or the first (highest-numbered) unit in your
daisychain to an RS-232 serial port on the DTE that will be receiving the
Caller ID information. If the DTE is a PC running terminal emulation, and
you're connecting the Caller ID unit to one of its DB9 male serial ports, you'll
need a straight-through-pinned (Pin 1 to 1, 2 to 2, etc) DB9 male-to-female
cable (not included) such as product code EDN12H-MF. If you're connecting
the Caller ID unit to an actual terminal, or to one of a PC's DB25 serial ports,
you'll need a DB9 male to DB25 female cable pinned as shown in Table 4-1
on the next page. If for whatever reason you want to connect the Caller ID
unit to a DCE, please call Black Box for technical support.
To prevent noise problems, the Caller ID unit is grounded through this
serial cable and the DTE, not through its own power supply; the DTE
must, in turn, be grounded to your site's grounding system through its
power cord or power supply. The grounding obtained through a
standard 3-prong AC-power outlet and power cord should be sufficient,
providing the AC outlet has been properly installed. Failure to properly
ground the DTE might cause the DTE and/or the Caller ID unit to
malfunction or be damaged, and also creates an electrical and fire
hazard. Do not use AC isolation plugs.
CAUTION!
CHAPTER 4: Installation
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