ADEMCO Vista-128FB Setup Guide download pdf (Page 111)

Section 7 – Downloading

7-3

Getting On-Line with a Control Panel

At the protected premises, the control panel must be

connected to the existing telephone line (refer to

SECTION 3: Installing the Control). No programming

of the panel is required before downloading to an

initial installation unless you are performing an

unattended download.

When establishing a connection between the computer

and the control panel, the following occurs:

Stage What Happens

1 The computer calls up the control panel.

(The phone number for each customer must

be entered into the customer’s account file

on the computer.)

2 The control panel answers the phone call at

the pre-programmed ring count and

executes a handshake with the computer.

3 The computer sends a request for callback

to the control, unless callback is not

required.

4 The panel acknowledges the request and

hangs up. During the next few seconds, the

control processes the request, making sure

certain encrypted information received from

the computer matches its own memory.

5 Upon a successful match, the control panel

seizes the phone line and calls the computer

back, unless callback is not required. (The

phone number to which the computer’s

modem is connected must be programmed

into the control field ✳35.)

6 The computer answers, usually by the

second ring, and executes a handshake with

the panel.

7 The panel then sends other default

information to the computer. If this

information matches the computer’s

information, a successful link is

established. The system is now “on-line”

with the computer.

• Alarms and Trouble responses and

reports are disabled during actual

uploading or downloading sessions. If you

are on-line, but not actively uploading or

downloading, all alarms report

immediately. All other reports are delayed

until you complete the session.

• The keypads remain active when on-line

with a control, but are inactive durin

actual uploading or downloading sessions.

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ADEMCO Vista-128FB Setup Guide Page 111

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