Bosch D7212GV2 Guía de instalación descargar pdf (Pagina 28)

D7212GV2 | Operation and Installation Guide | 7.0 Telephone Connections

28 Bosch Security Systems, Inc. | 2/07 | F01U003805-02

7.5 Phone LED (Red)

The red Phone LED illuminates when the control

panel seizes the telephone line and remains illuminated

until the control panel returns the telephone line. Refer

to Figure 11 on page 27 for the location of the red LED.

7.6 Operation Monitor LED (Green)

The green Operation Monitor LED indicates the

operation of the central processing unit (CPU). When

the CPU is operating normally, the LED flashes 0.5 sec

on, 0.5 sec off.

This green LED also serves as a ring indicator. The

LED is located on the lower right side (Figure 11 on

page 27). When there is ring voltage on the telephone

line (the telephone is ringing), the green LED flashes at

a faster rate for the duration of each ring. Ring voltage

must reach a minimum of 45 VAC before the system

detects it.

7.7 Dialing Format

The system can be programmed to use dual tone multi-

frequency (DTMF) or pulse dialing. Refer to Phone

Parameters in the D7212GV2 Program Entry Guide

(P/N: F01U003804).

7.8 Telephone Line Monitor

The control panel has a built-in telephone line monitor

that tests the telephone line for voltage and current. If

trouble occurs on the telephone line, refer to SERVC

PH LINE Appears on the Keypad in the Central Station

Communication Symptoms section of the

D9412GV2/D7412GV2 Troubleshooting Guide

(P/N: F01U011024).

If the control panel senses trouble, it starts a

programmable telephone line trouble timer, which

continues to run as long as the monitor detects trouble.

It resets to zero when the control panel senses a normal

line. If the timer reaches the delay time in the Phone

Supervision program item, it begins a telephone line

trouble response. Programming determines what the

response is. For programming information, refer to

Phone Parameters in the D7212GV2 Program Entry Guide

(P/N: F01U003804).

Any time the control panel uses the telephone line to

make a call or is on-line with the remote programming

software (RPS), it stops monitoring the telephone line

during this process. When the telephone line on the

control panel is no longer in use, it begins to monitor

the telephone line again.

Bad Line Might Test OK: The telephone line monitor

uses voltage levels to test the status of the telephone

line. In some instances, a given telephone line might be

out of service without affecting the voltage on the line.

The telephone line monitor cannot recognize this

trouble condition. Refer to the D9412GV2/D7412GV2

Troubleshooting Guide (P/N: F01U011024).

7.9 Called Party Disconnect

Telephone companies provide “called party

disconnect” to allow the called party to terminate a call.

The called party must go on hook (hang up) for a fixed

interval before a dial tone is available for a new call.

This interval varies with telephone company

equipment. Control panel firmware allows for “called

party disconnect” by adding a 35-second, “on hook”

interval to the dial tone detect function. If the control

panel does not detect a dial tone in seven seconds, it

puts the telephone line on hook for 35 seconds to

activate “called party disconnect,” goes off hook, and

begins a seven-second dial tone detect. If no dial tone

is detected, the control panel dials the number anyway.

Each time the number is dialed, the control panel

records this as an attempt.

7.10 Communication Failure

After two attempts to reach the receiver, the control

panel generates and sends a

COMM FAIL PH # event.

The event that triggered the telephone call to the

central station follows the

COMM FAIL PH # event.

After ten attempts to reach the receiver, the control

panel enters communication failure. The control panel

clears any reports in its telephone buffer and

COMM

FAIL RTE #

event is generated, which appears in the

display at keypads. A trouble sounder can be

programmed to annunciate at the keypads.

One hour after the

COMM FAIL RTE # is generated,

the control panel attempts to send this event. If the

COMM FAIL RTE # event is the only event in the

queue and cannot reach the central station, the keypads

do not turn on the trouble sounder again.

Enhanced Communication

The D7212GV2 Control Panel can send events over

the SDI Bus to a DX4020 or D9133TTL-E Network

Interface Module (NIM). For more information on the

enhanced communications capabilities, refer to

GV2AUX in the D7212GV2 Program Entry Guide

(P/N: F01U003804).

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Bosch D7212GV2 Guía de instalación Pagina 28

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