Transferring data

While a call is connected, the application can exchange user-to-user information with its peer in the far exchange by invoking ISUPDataReq and/or receiving data indications (EVTSITDATIND) from the ISUP layer.

Either party can suspend the circuit connection by invoking ISUPSuspendReq or receiving a suspend indication (EVTSITSUSPIND) event.

Either party can resume the circuit connection by invoking ISUPResumeReq or receiving a resume indication (EVTSITRESMIND) event.