Bitfields for CAPI v2.0 B3 protocol support:
Bit(s)	Description	)
 0	transparent (required, always set)
 1	T.90NL with T.70NL compatibility
 2	ISO 8208 (X.25 DTE-DTE)
 3	X.25 DCE
 4	T.30 for group 3 FAX
 5-31	reserved (0)
SeeAlso: #04074