D2212B/D2212BE Operation and Installation Guide
D2212B/D2212BE
Page 23
© 2002 Bosch Security Systems
39934E
5.9
Communication Failure
After five attempts to reach the receiver (ten attempts if two phone numbers are programmed), the panel goes into
communication failure. The panel clears any reports in its phone buffer. The panel sounds a tone at the keypad indicating
trouble.
Pressing the [CLEAR] key silences the tone. When communication restores (a report is acknowledged by the receiver), the
keypad returns to normal operation.
5.10
Ground Start
Some telephone systems require a momentary ground input to initiate dial tone. To interface with a ground start system,
connect a D133 (or D134) relay as shown in Figure 11. See RELAYS Group in the D2000 Series Program Entry Guide
(P/N: 35114) for instructions on programming the external relay output for Ground Start.
The panel’s ground terminal must be connected to an earth ground reference.
You cannot use ground start phone systems for fire or combined fire/burglary systems.
Data
+Aux-
N/O 1
COMM 1
N/C 1
X1 -
(Connect to terminal
Ext1 for external relay 1)
X1 +
D133
Relay Module
Brown
Green
Red
Gray
To RJ31X Phone Jack
D164
Phone Cord
D2212
Figure 11: D133 for Ground Start
Telephone Connections
