Note:
Requests formed incorrectly or with disallowed characters may result in an error, or cause the file to be
skipped. Error cases include:
Multiple occurrences of the same parameter (filedir or filename) in the POST variable list are not
allowed. (404)
Empty parameters in the POST variable list are not allowed. (404)
File names longer than 256 characters will be truncated.
File names containing ' ' (space) or '..' will be skipped.
This document can be downloaded here:
http://www.grandstream.com/products/ucm_series/ucm61xx/documents/ucm61xx_cdr_rec_api_guide.pdf
* Asterisk is a Registered Trademark of Digium, Inc.