RADIUS attribute from rfc7268

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WLAN-Venue-Language

The WLAN-Venue-Language Attribute is a string encoded by
      ISO-14962-1997  that defines the language used in
      the WLAN-Venue-Name Attribute.  Zero or more WLAN-Venue-Language
      Attributes may be included in an Access-Request or Accounting-
      Request, and each one indicates the language of the WLAN-Venue-
      Name Attribute that follows it.

      A summary of the WLAN-Venue-Language Attribute format is shown
      below.  The fields are transmitted from left to right.

      0                   1                   2                   3
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |     Type      |    Length     |         String...
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
        String (cont) |
      +-+-+-+-+-+-+-+-+

   Type

      183

   Length

      4-5

   String

      The String field is a two- or three-character language code
      selected from ISO-639 .  A two-character language code
      has a zero ("null" in ISO-14962-1997) appended to make it 3 octets
      in length.

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