Character string types

Here are ASN.1 supported character string types:

NumericString numbers 0-9 and single space
PrintableString letters a-z, A-Z, numbers 0-9, space and characters '"()+,-./:=?
TeletexString CCITT T.61
VideotexString CCITT T.100 and T.101
VisibleString only visible characters of IA5 (ASCII international version)
IA5String complete set of IA5
GraphicString ISO registered graphic characters and space
GeneralString registered graphic and control characters plus space and delete

Here are some examples of definig character string subtype