isdnLLC(D4isdn)

isdnLLC -- ISDN Low Layer Compatibility structure

Synopsis

   #include <sys/types.h>
   #include <sys/scoisdn.h>
   
   typedef struct isdnLLC
   {
       void    *dummy;     /* ## Q.931 */
   } isdnLLC_t;

Description

The isdnLLC structure for Low Layer Compatibility provides a means for compatibility checking by an addressed entity; for example, a remote user, an interworking unit, or a high-layer function network node addressed by the calling user. LLC information is transferred transparently by ISDN between the call originating entity (that is, the calling user) and the addressed entity. If LLC negotiation is allowed by the network, the isdnLLC structure is also passed transparently from the addressed entity to the originating unit. The isdnLLC structure is coded according to Q.931.

ISDN_CONNECT.ISDN_REQ(D7isdn)
ISDN_CONNECT.ISDN_IND(D7isdn)
ISDN_CONNECT.ISDN_RESP(D7isdn)
ISDN_CONNECT_ACTIVE.ISDN_IND(D7isdn)

References

Intro(D4isdn), Intro(D7isdn)

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