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ISDN Software Reference for Linux and Windows
22
Table 5. Inbound Call Set-Up (Synchronous Example)
Function Action/Description
cc_WaitCall( )
Enables notification of an incoming call after line
device opened with cc_Open( ). Call is in
OFFERED state.
*cc_GetANI( )
Request ANI information
*cc_GetDNIS( )
Retrieves DNIS digits received from the network.
*cc_CallAck( )
Requests additional call setup information
*cc_AcceptCall( )
Issued to acknowledge that call was received but
called party has not answered. Call is in Accepted
state.
cc_AnswerCall( )
Issued to connect call to called party (answer
inbound call). At the successful completion of
cc_AnswerCall( ), the call is in Connected state.
NOTES: 1.
* = Optional functions
2. There are no termination events in synchronous mode.
Table 6 illustrates a simple scenario for making an outbound call using the
synchronous call establishment process. The item denoted by an asterisk (*) is a
maskable event that may be reported to the application. For more detailed call
scenarios, see Appendix A.