Connectors And Pinouts - Black Box TE120A User Manual

4- AND 8-LINE CALLER ID

2.3 Connectors and Pinouts

There are several connectors on the Caller ID units. Each 4-Line unit (TE120A)
has two dual-line RJ-14C female telephone-line ports and a barrel-type power inlet.
Each 8-Line unit has eight single-line RJ-11C female telephone-line ports and a
5-pin DIN female power inlet. The RJ-14C and RJ-11C pinouts look like this:
Pin RJ-14C (TE120A) Signal
1, 6 [No connection]
2 2nd line (2 or 4) tip
3 1st line (1 or 3) tip
4 1st line (1 or 3) ring
5 2nd line (2 or 4) ring
Both 4- and 8-Line units have two RS-232 ports whose data rate, parity, data bits,
and flow control are all user-selectable (see Section 3.2). The RS-232 OUT port is a
DB9 female connector pinned as an RS-232 DCE port. (This means that it actually
transmits data on its Receive Data lead, as a modem would.) It's designed to be
connected to printers, terminals, PCs running terminal emulators, and other
DTEs. (In daisychained applications, it can be connected to the RS-232 IN port of
the next Caller ID unit in the chain.) The RS-232 OUT port is pinned this way:
Pin Signal
1 Carrier Detect (CD)
2 Receive Data (RD)
5 Signal Ground (SGND)
6 Data Set Ready (DSR)
7 Request to Send (RTS)
8 Clear to Send (CTS)
9 Busy
Pin 7, RTS, must be pulled active (high) in order for the Caller ID unit to
turn on its DATA LED when it receives Caller ID information from a
telephone line.
Pin 9, Busy, is a proprietary signal used primarily for communication
between daisychained Caller ID units, although it can be connected to
Pin 22, Ring Indicator (RI), on a DTE with a DB25 serial port, as shown in
Table 4-1 at the end of Chapter 4.
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RJ-11C (TE121A) Signal
[No connection]
[No connection]
Tip
Ring
[No connection]
Direction
Out (to other device)
Out (to other device)
N/A
Out (to other device)
In (from other device)
Out (to other device)
Out (to other Caller ID unit)
NOTES