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cc_CallProgress( ) sends a PROGRESS message to the network
60
Name:
int cc_CallProgress(crn, indicator)
Inputs:
CRN crn
• call reference number
int indicator
• progress indicator
Returns:
0 on success
< 0 on failure
Includes:
cclib.h
Category:
Optional call handling
Mode:
synchronous
Technology:
BRI/2; BRI/SC; PRI (all protocols)
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Description
The cc_CallProgress( ) function sends a PROGRESS message to the network.
This function can be called after CCEV_OFFERED occurs, in asynchronous
mode, or after the cc_WaitCall( ) function successfully completes, in
synchronous mode. Applications may use the message on the D channel to
indicate that the connection is not an ISDN terminal or that in-band information is
available.
The cc_CallProgress( ) function is not needed in terminating mode. It may be
used in a drop-and-insert configuration when an in-band Special Information Tone
(SIT) or call progress tone is sent to the network.
Parameter Description
crn:
The call reference number. Each call needs a CRN.
indicator:
Specifies the progress indicator. The values are:
• CALL_NOT_END_TO_END_ISDN - In drop-and-insert
configurations, the application has the option of providing
this information to the network.
• IN_BAND_INFO - In drop-and-insert configurations, the
application has the option of notifying the network that in-
band tones are available.
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Cautions
None