Nortel NAC, User Manual, Page: 74 / 132

Saving to a file 63
Downloading the report
Standard 1.0 Network Administration Center November 1998
User Guide Supplement
These codes allow your application to recognize the report.
Without the codes, the report may not be legible in some
applications. You can delete these codes after you import the
report into your application file.
Reports that are output to a data stream printer consist of a start
file marker, a report, and an end file marker. The sample shows
a Summarized ACD-DN Performance Report sent to a data
stream printer. The output is in the standard ISO 8859-1 Latin-1
character set.
The format of the report data conforms to computer industry
standards, such as the Lotus 1-2-3 or Excel comma delimited
format.
The start of the file marker information includes two lines of
information. The first line signals the start of the report output.
Double quotation marks enclose this alphanumeric string
(“[Meridian NAC BEGIN]”). The second line contains numeric
fields - a cyclic redundancy check (CRC), and a character count
of the report data. A comma separates the fields in the second
line. The CRC and character count do not include the characters
in the start file or end file marker lines.
NAC must use an industry-standard CRC algorithm that is
portable across different computing platforms. This algorithm
simplifies the job of the third-party application provider who
uses this information. The formula is the summation of the
following expression, where X is each byte in the file:
CRC-CCITT = X16 + X12 + X5 + X0
The end file marker consists of a single line to signal the end of
the report output. Since this string is an alphanumeric string, it
is enclosed in double quotation marks.