TCAP coordinated event structure

Represents both incoming coordinated status change indication (remote request) and confirmation (response) events. It is indicated by an eventType of TCAP_EVENT_COORD_IND or TCAP_EVENT_COORD_CFM.

typedef struct Tcap_Coord_Event
{
  U8   aSsn;   /* affected subsystem number              */
  U8   smi;    /* subsystem multiplicity indicator...    */
  U8   fill;   /* fill for alignment                     */
  U8   fill2;  /* fill for alignment                     */
} TcapCoordEvent;

 

The TcapCoordEvent structure contains the following fields:

Field

Description

aSsn

Represents the affected subsystem number. The value can be in the range of 0 - 255.

smi

Represents the subsystem multiplicity indicator, or the status of the replicated subsystem from the underlying SCCP message:

0x00 = SMI_UNKNOWN   Multiplicity unknown

0x01 = SMI_SOLO   Subsystem not replicated

0x02 = SMI_DUP   Subsystem is replicated

0x10 = SMI_DENIED   Indicate denial of coordinated state change

SMI_DENIED is used by the SCCP in the TCAP_EVENT_COORD_CFM message to indicate that the state change request timed out and was not granted.