External Dialer Failed Indicator; Model 4175 Dual Phone Line Monitor With Ring Detector; Model 4175 Wiring; Wiring For External Dialer Failed Indicator - Regency 4720 Installation Manual

Regency ® Model 4720 Control/Communicator Installation Manual (P/N 150476, Rev. A)

External Dialer Failed Indicator

11.3
A 12-V device such as an indicator lamp or the coil of a 12-V
DC
indicator. To use a dialer failed indicator, connect the positive side of the indicator to Terminal 5 (auxiliary
power) and the negative side to Terminal 40 (dialer failed).
In UL applications, this signal is provided from the touchpads.

Model 4175 Dual Phone Line Monitor with Ring Detector

11.4

Model 4175 Wiring

11.4.1
When using two (2) phone lines, you must install the Model 4175 Dual Phone Line Monitor.
The following notes apply to Revision L and later printed circuit boards:
Note 1: Before you can connect the Model 4175, you must remove Jumper blocks J5 and J6 from the Model
4720 board.
Note 2: When the Model 4175 is being used, the Answering Machine Bypass feature is NOT available.
Therefore, if an answering machine is installed, you must put it on Line 2. Downloading takes place
on Line 1, and an answering machine on Line 1 would prevent activation of the downloading
feature.
1. Plug the Model 4175 onto the Phone Line Monitor connector on the Model 4720 printed circuit
board (same connector as for the Model 4170).
2. Connect the second phone cord as shown in Figure 11.4a below. (The first phone cord for Line 1
should be connected directly to the Model 4720 as described in Section 11.1.)
Figure 11.4a:

Wiring for External Dialer Failed Indicator

Figure 11.3a:

Wiring for Model 4175 Dual Phone Line Monitor

relay may be wired as a dialer failed
DC
39
Revised 10/98