ISDN_INFO.ISDN_IND(D7isdn)

ISDN_INFO.ISDN_IND -- ISDN signalling information indication

Synopsis

   #include <sys/stream.h>
   #include <sys/mdi.h>
   #include <sys/types.h>
   #include <sys/scoisdn.h>
   
   typedef struct isdn_info_ind
   {
       isdnPLCI_t      plci;
       isdnInfoNbr_t   infoNumber;
       isdnInfoEl_t    infoElement;
   } isdn_info_ind_t;

Description

The ISDN_INFO.ISDN_IND message consists of one M_PROTO(D7str) message block indicating the receipt of a Q.931 information frame from the network. This message indicates an event for a physical connection as expressed by an information element (the infoElement parameter) whose coding is described by the infoNumber parameter. The plci parameter identifies the connection.

An individual ISDN_INFO.ISDN_IND is displayed for each information element. To enable the indication of events, the infoMask parameter of the ISDN_LISTEN.ISDN_REQ(D7isdn) message must be used. If the PLCI field is 0, the network has sent information not associated with a physical connection.

If information is received from the network that leads to other ISDN driver messages -- for example, receiving a RELEASE from the network that includes charging information -- the application will get the ISDN_INFO.ISDN_IND first, followed by the corresponding ISDN driver message.

Parameters

plci: Physical Link Connection Identifier; see isdnPLCI(D4isdn).
infoNumber: Information element identifier; see isdnInfoNbr(D4isdn).
infoElement: Information element; see isdnInfoEl(D4isdn).

References

Intro(D4isdn), Intro(D7isdn)

ISDN_INFO.ISDN_CONF(D7isdn) ISDN_INFO.ISDN_REQ(D7isdn), ISDN_INFO.ISDN_RESP(D7isdn),

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