Notifies all concerned point codes of a change in its subsystem state by generating a subsystem available (SSA) or subsystem prohibited (SSP) message to all concerned signaling points as specified by the application's SCCP service access point.
DWORD TCAPStateReq ( CTAHD ctahd, S16 spId, U8 aSsn, U8 status)
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Argument |
Description |
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ctahd |
Context handle returned by ctaCreateContext. |
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spId |
TCAP SAP ID to which the caller is bound. |
|
aSsn |
Affected subsystem number. |
|
status |
New subsystem status: 0x03 = SS_OOS Subsystem out of service 0x04 = SS_IS Subsystem in service |
|
Return value |
Description |
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TCAP_SUCCESS |
|
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CTAERR_BAD_ARGUMENT |
Natural Access handle is invalid, or an invalid message buffer has been used. |
|
CTAERR_DRIVER_SEND_FAILED |
Message buffer was not sent to the board. Call TCAPGetApiStats and check the txLastErr field to find the error. |
|
CTAERR_INVALID_HANDLE |
Natural Access handle is invalid. |
|
CTAERR_OUT_OF_MEMORY |
TCAP service queue is full and another request could not be queued to the TCAP layer. |