18
4- AND 8-LINE CALLER ID
3. Configuration
You’ll configure your Caller ID units for your application using their front-
mounted 8-position configuration DIP switches. Both models have a switch labeled
S2 that controls RS-232 characteristics and unit number. The 8-Line model has an
additional switch labeled S1 for signal handling.
3.1 DIP Switch S1 (TE121A Only)
DIP switch S1 controls the voltage and behavior of three of the pins/signals on the
RS-232 OUT port (see
Section 2.3
) of the 8-Line Caller ID (TE121A), so that it will
be compatible with your other RS-232 devices. (All of the possible settings of S1’s
switch positions that aren’t listed below are invalid—do
not
use unlisted settings,
because they could disable or damage attached equipment.)
Positions 1 and 2 govern how Pin 1, Carrier Detect (CD), is handled:
•
1 OFF, 2 OFF:
Pin 1 output is disabled (factory-default setting).
•
1 ON, 2 OFF:
Causes cont12 VDC output on Pin 1.
•
1 OFF, 2 ON:
Causes continuous –12 VDC output on Pin 1.
Positions 3, 4, and 5 govern how Pin 6, Data Set Ready (DSR), is handled:
•
3 OFF, 4 OFF, 5 OFF:
Pin 6 output is disabled (factory-default setting).
•
3 ON, 4 OFF, 5 OFF:
Causes cont12 VDC output on Pin 6.
•
3 OFF, 4 ON, 5 OFF:
Causes Pin 6 (DSR) output to follow Pin 8 (CTS) output.
•
3 OFF, 4 OFF, 5 ON:
Causes continuous –12 VDC output on Pin 6.
Positions 6, 7, and 8 govern how Pin 9, the proprietary Busy signal, is handled:
•
6 OFF, 7 OFF, 8 OFF:
Pin 9 output is disabled (factory-default setting).
•
6 ON, 7 OFF, 8 OFF:
Causes cont12 VDC output on Pin 9.
•
6 OFF, 7 ON, 8 OFF:
Causes Pin 9 output to follow Pin 9 input from the
RS-232 IN port.
•
6 OFF, 7 OFF, 8 ON:
Causes continuous –12 VDC output on Pin 9.
Summary of Contents for TE120A
Page 13: ...12 4 AND 8 LINE CALLER ID Figure 2 3 Signal flow with a 4 Line Caller ID TE120A ...
Page 14: ...13 CHAPTER 2 Introduction Figure 2 4 Signal flow with an 8 Line Caller ID TE121A ...
Page 15: ...14 4 AND 8 LINE CALLER ID Figure 2 5 Signal flow with multiple 4 Line Caller IDs TE120A ...
Page 16: ...15 CHAPTER 2 Introduction Figure 2 6 Signal flow with multiple 8 Line Caller IDs TE121A ...
Page 29: ...NOTES ...