Bosch d9412gv3 Manual De Usuario

Descargar
Página de 76
D9412GV3/D7412GV3 | Operation and Installation Guide | 7.0 
Telephone Connections 
 
Bosch Security Systems, Inc. | 10/10 | F01U143070-03 
30
 
7.11 D928 
Dual 
Phone Line Switcher 
7.11.1 Description 
The optional D928 Dual Phone Line Switcher allows 
the control panel to send reports over two separate 
telephone lines. If a telephone line is not within the 
operating range, the control panel attempts to use the 
other telephone line to send the message. If trouble is 
detected, the control panel keeps the faulty telephone 
line in memory. 
Set the Ring Count above 2 on Answering 
Machines:
 The control panel’s RPS line monitor 
feature might not operate correctly if an answering 
machine with a ring count of less than two rings is 
connected to a telephone line used by the D928 
Module. 
7.11.2 Operation 
Refer to Phone and Phone Parameters in the 
GV2MAIN section of the D9412GV3/D7412GV3 
Program Entry Guide
 (P/N: F01U170807) for 
telephone supervision and reporting options. To use 
the D928, set the Two Phone Lines prompt to Yes
When the D928 is installed, the control panel 
alternates between Phone Line 1 and Phone Line 2 to 
send its first report. For example, on day one, the 
control panel first attempts to communicate on Phone 
Line 1. On day two, the control panel switches and 
attempts to communicate on Phone Line 2. 
 
Any time the control panel resets or is 
powered down or up, the next reported 
event always attempts to call out on Phone 
Line 1 first. 
 
 
If Phone Line 2 is not in service on “Day 2”, 
the control panel switches to the primary 
phone line to send the report. 
With the D928 Dual Phone Line Switcher installed, 
the control panel uses two telephone lines (primary 
and secondary) to dial up to four telephone numbers. 
When using a primary and a backup device within a 
Route Group #, the control panel makes two 
attempts on the primary telephone line using the 
Primary Device # as programmed. If these two 
attempts fail, the control panel switches to the 
secondary telephone line using the Backup Device # 
as programmed. This pattern continues for a total of 
ten attempts. After ten unsuccessful attempts, the 
control panel generates a Comm Fail event for the 
given Route Group #
 
Figure 12:  D928 Dual Phone Line Switcher 
+
+
4
6
8
10
1
2
3
5
7
9
11
1 -  Connect to ACCESSORY CONNECTOR with 
ribbon cable. 
2 -  Green to Terminal 1 
3 -  Black to Terminal 9 
4 -  AC Power LED (green) 
5 -  Phone jack to primary phone line 
6 -  Primary Fail LED (yellow) 
7 -  Phone jack to secondary phone line 
8 -  Secondary Fail LED (yellow) 
9 -  Phone jack to telco connector 
10 - Communications Fail LED (yellow)   
11 -  Buzzer