Asterisk Project : Asterisk 10 Function_FILTER This page last changed on Oct 14, 2011 by wikibot. # FILTER() ### Synopsis Filter the string to include only the allowed characters ### Description Permits all characters listed in allowed-chars, filtering all others outs. In addition to literally listing the characters, you may also use ranges of characters (delimited by a `-` Hexadecimal characters started with a `\x` (i.e. \x20) Octal characters started with a `\0` (i.e. \040) Also `\t`, `\n` and `\r` are recognized. If you want the If you want the `-` character it needs to be prefixed with a {{}} ### Syntax
    FILTER(allowed-chars,string)
##### Arguments `allowed-chars` `string` ### See Also ### Import Version This documentation was imported from Asterisk version SVN-branch-10-r340810.

Document generated by Confluence on Oct 14, 2011 13:25