Uses voice and fax functions to receive a call, play a prompt menu, and respond to input by sending a fax to the caller. It can receive input from a live caller, or from the simulated caller provided by the caller demonstration program.
faxback [options]
options are:
|
Option |
Description |
Default |
|---|---|---|
|
-b n |
Specifies the AG or CG board number n. |
0 |
|
-q |
Specifies that the board is a QX 2000 board. |
AG/CG board |
|
-s n:m |
Specifies the stream and timeslot. |
0:0 |
|
-r resolution |
Specifies the resolution (low, high, or superhigh). |
low |
|
-e encoding |
Specifies the encoding (1D, 2D, or MMR). |
1D |
|
-c mode |
Specifies the conversion mode: y = yes (NFX_OTF_ALWAYS) |
m |
|
-p protocol |
Specifies the protocol (TCP name). |
nocc |
|
-E |
Specifies that ECM mode is used when encoding is 1D or 2D. |
Do not use ECM. |
|
-v |
Specifies verbose reporting of event information. |
Non-verbose reporting. |
faxback demonstrates how to use voice, DTMF detection, and fax functions during a single telephone call. It uses API functions from NaturalFax, Natural Access, and the ADI service. faxback plays a fixed prompt menu to the caller, allows the caller to select a document, and faxes the document back to the caller.
faxback can be used interactively by calling it from a fax machine. It can also be used in conjunction with caller, a NaturalFax automated testing demonstration program.
faxback performs the following tasks:
|
Task |
Description |
|
1 |
faxback first initializes the Natural Access environment and then opens the ADI service on a context associated with the specified board, stream, and timeslot. |
|
2 |
When faxback receives a call, it plays a voice menu prompt requesting that the caller enter DTMF tones to select a document. |
|
3 |
faxback initializes a document queue and uses DTMF detection to determine which documents the caller selected. |
|
4 |
faxback enqueues the documents, sets transmit parameters, and transmits the requested documents. |
|
5 |
faxback monitors all events until it receives the NFXEVN_SESSION_DONE event. It takes appropriate actions if the call is disconnected or if a board error occurs. |
|
6 |
After the fax is transmitted, the document queue is destroyed and faxback waits for the next incoming call. |
faxback runs in an infinite loop. Press Ctrl+C to terminate the program.
If faxback and caller are used together, the programs synchronize with each other using DTMF tones:
|
Task |
Description |
|
1 |
faxback initializes Natural Access and opens the ADI service on a context associated with the specified board, stream, and timeslot. |
|
2 |
It places the call and sets up detection of the DTMF tone that signals the end of the prompt menu. |
|
3 |
When it receives this tone, it generates the DTMF tone that corresponds to a request for a document catalog. |
|
4 |
caller then creates a document queue, enqueues temporary files, sets receive parameters, and receives the document when faxback transmits it. |
|
5 |
caller monitors events until it receives the NFXEVN_SESSION_DONE event. It takes appropriate actions if the call is disconnected or if a board error occurs. |
|
6 |
After the fax has been received, the document queue is destroyed, and caller places another call. |
caller runs in an infinite loop. Press Ctrl+C to terminate the program.