Search string for use in contact cleaning project
$1 = intenational code, omitting preceding "+"
$2 = area code
$3 = first three digits of phone number
$4 = last four digits of phone
$5 = extension, inclusive of any commas or hashes to automate phone tree navigation
TO DO
handle recursive menus (e.g., "321-321-1234,,,1234#,,123344#....)