isdnReason(D4isdn)

isdnReason -- ISDN disconnect physical channel reason codes

Synopsis

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

The isdnReason parameter provides error information to the application regarding the clearing of a physical connection.

The following disconnect reason codes are valid:

ISDN_REASON_OK: 0x0000: normal clearing, no cause available
ISDN_REASON_L1PERR: 0x3301: protocol error layer 1
ISDN_REASON_L2PERR: 0x3302: protocol error layer 2
ISDN_REASON_L3PERR: 0x3303: protocol error layer 3
ISDN_REASON_APPANS: 0x3304: another application got that call; see ISDN_LISTEN.ISDN_REQ(D7isdn)
ISDN_REASON_NET: 0x3400: disconnect cause from the network
ISDN_REASON_NETMASK: 0x00ff: cause information element (octet 4) within ISDN_REASON_NET received from the network according to Q.931

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