GaneData I-DEM 16 Benutzerhandbuch und Handbuch - Seite 11

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Message type

For valid Caller ID this will in most instances be 80H. For message waiting 82H is sent but

this is little used. In general, if 80H is not received from the serial port, the whole Caller ID

string can be discarded.

Message length

This is a total of all the bytes to follow, except the Checksum. It is useful as an error

check.

Parameters

This is the actual payload of the Caller ID data. There are a number ofparameters that are

defined. The most important ones are outlined below. Anyother parameters received need

to be accounted for, but then can be ignored.

Time & Date=01H

This parameter is always sent with a length of 8 and is structured as follows. (This can be

assumed to be "real time" accurate to within 1minute and can be used to update the PC

clock if required.)

•First 2 bytes

•Next 2 bytes

•Last 2 bytes

Calling Line Number=02H

The maximum length of the number sent is 18 characters. Spaces and/or dashes are sent

as delimiters.

Month

Day

Hours

Minutes