H.221 Non-standard Codepoints (Q64)

The information in this article applies to: H.245, H.225.0

T.35 lists country codepoints used by H.221 non-standard ASN.1 components. The extension and manufacturer codepoints are assigned by country. Here are the codepoints for countries that have H.323-based VoIP or H.323- or H.324-based videoconferencing equipment. These are from the 18 January 1991 version of T.35. Note that Germany now has two codepoints. If we left anyone out, please let me know. The following codepoints are expressed in hexadecimal.

The only publicly available lists of country-assigned codepoints are for the United Kingdom and North America. If you find other public listings, let us know.

The ITU maintains a database of national authorities for the assignment of ITU-T T.35 terminal provider codes.