isdnInfoNbr(D4isdn)

isdnInfoNbr -- ISDN information number

Synopsis

   #include <sys/types.h>
   #include <sys/scoisdn.h>
   typedef isdnWord_t  isdnInfoNbr_t;

Description

The isdnInfoNbr parameter specifies the coding of the isdnInfoEl(D4isdn) parameter, as well as the type of information that is carried by the ISDN_INFO.ISDN_IND(D7isdn) message. The high byte is structured as a bit field and indicates which type of information is held in the low byte.

The following bit values are valid:

ISDN_INFONBRMSK_ELEMPTY

0x8000: [15] info element empty. If this bit is set, the low byte containing the message type is coded according to Q.931. In this case, the ISDN_INFO.ISDN_IND message indicates the occurrence of a network event according to the specified message, and the parameter isdnInfoEl is an empty ISDN driver structure.

ISDN_INFONBRMSK_SUPINFO

0x4000: [14] supplementary info. If this bit is set, the low byte represents supplementary information. The defined values are:

0: sum of charges in charging units.
1: sum of charges in national currency

In both cases, the isdnInfoEl parameter contains the content of the information element.

If both bits are cleared, the low byte represents an information element type coding according to Q.931, and the isdnInfoEl parameter contains the content of the information element.

References

Intro(D4isdn), Intro(D7isdn)

``SCO ISDN adapter drivers'' in Developing MDI network adapter drivers.