man/man9f/csx_Parse_CISTPL_FUNCE.9f

uint32_t function; /* type of extended data */
uint32_t subfunction;
union {
 struct serial {
 uint32_t ua; /* UART in use */
 uint32_t uc; /* UART capabilities */
 } serial;
 struct modem {
 uint32_t fc; /* supported flow control methods */
 uint32_t cb; /* size of DCE command buffer */
 uint32_t eb; /* size of DCE to DCE buffer */
 uint32_t tb; /* size of DTE to DCE buffer */
 } modem;
 struct data_modem {
 uint32_t ud; /* highest data rate */
 uint32_t ms; /* modulation standards */
 uint32_t em; /* err correct proto and
 /* non-CCITT modulation */
 uint32_t dc; /* data compression protocols */
 uint32_t cm; /* command protocols */
 uint32_t ex; /* escape mechanisms */
 uint32_t dy; /* standardized data encryption */
 uint32_t ef; /* miscellaneous end user features */
 uint32_t ncd; /* number of country codes */
 uchar_t cd[16]; /* CCITT country code */
 } data_modem;
 struct fax {
 uint32_t uf; /* highest data rate in DTE/UART */
 uint32_t fm; /* CCITT modulation standards */
 uint32_t fy; /* standardized data encryption */
 uint32_t fs; /* feature selection */
 uint32_t ncf; /* number of country codes */
 uchar_t cf[16]; /* CCITT country codes */
 } fax;
 struct voice {
 uint32_t uv; /* highest data rate */
 uint32_t nsr;
 uint32_t sr[16]; /* voice sampling rates (*100) */
 uint32_t nss;
 uint32_t ss[16]; /* voice sample sizes (*10) */
 uint32_t nsc;
 uint32_t sc[16]; /* voice compression methods */
 } voice;
 struct lan {
 uint32_t tech; /* network technology */
 uint32_t speed; /* media bit or baud rate */
 uint32_t media; /* network media supported */
 uint32_t con; /* open/closed connector standard */
 uint32_t id_sz; /* length of lan station id */
 uchar_t id[16]; /* station ID */
 } lan;
} data;