isdnAddInfo(D4isdn)

isdnAddInfo -- ISDN additional information structures

Synopsis

   #include <sys/types.h>
   #include <sys/scoisdn.h>
   
   typedef struct isdnAddInfo
   {
       struct
       {
       isdnWord_t  channel;
       } BchanInfo;
   

       struct
       {
       void    *dummy; /* ## Q.931 */
       } keypadFacility;
   

       struct      /* Per Q.931 4.5.27 */
       {
       void    *dummy; /* ## Q.931 */
       } userUserData;
   

       struct
       {
       void    *dummy; /* ## Q.931 */
       } facilityData;
   } isdnAddInfo_t;

Description

The isdnAddInfo structure is used to exchange information specific to the signalling protocol of the network. Only members relevant to a given signalling protocol are used; for example, the B-channel information is ignored in the message ISDN_DISCONNECT.ISDN_REQ(D7isdn).

This type is used by:

ISDN_ALERT.ISDN_REQ(D7isdn)
ISDN_CONNECT.ISDN_REQ(D7isdn)
ISDN_CONNECT.ISDN_IND(D7isdn)
ISDN_CONNECT.ISDN_RESP(D7isdn)
ISDN_DISCONNECT.ISDN_REQ(D7isdn)
ISDN_INFO.ISDN_REQ(D7isdn)

Parameters

BchanInfo: B-channel information
keypadFacility: keypad utility; coded according to Q.931
userUserData: user data; coded according to Q.931
facilityData: facility data array, which is used to transfer additional parameters coded according to Q.931, starting from octet 1. This field is used to transport one or more complete facility data information elements.

References

Intro(D4isdn), Intro(D7isdn)

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