Using voice and fax: caller

Uses voice and fax functions to call a host system running faxback, then requests and receives a fax.

Usage

caller [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, MMR, or TIFF_S).

1D

-c mode

Specifies the conversion mode:

y = yes (NFX_OTF_ALWAYS)

m = maybe (NFX_OTF_ONLY_IF_FAIL)

n = no (NFX_OTF_NEVER)

m

-p protocol

Specifies the protocol (TCP name).

nocc

-d telno

Specifies the telephone number.

No default.

-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.

Description

Use caller to automate running faxback. caller performs the following tasks:

Task

Description

1

caller places a call to the host running faxback and requests a document by sending a touch tone.

2

It receives the faxed document using NaturalFax, Natural Access, and ADI service functions. DTMF tones are used to synchronize faxback and caller.

3

caller begins by initializing the Natural Access environment.

4

It opens the ADI service on a context associated with the specified board, stream, and timeslot.

5

It places the call and sets up detection of the DTMF tone that signals the end of the prompt menu.

6

When it receives this tone, it generates the DTMF tone that corresponds to a request for a document catalog.

7

caller then creates a document queue and enqueues nonexistent files that will store the received documents.

8

caller sets receive parameters.

9

It receives the document when faxback transmits it. Specifying TIFF-S encoding causes the calling application to receive a file using TIFF-S attributes of 1D encoding, LOW resolution, and A4 pagewidth. TIFF-S encoding overrides any values specified on the command line.

10

caller 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.

11

After the fax is received, the document queue is destroyed and caller is set to place another call.

caller runs in an infinite loop. Press Ctrl+C to terminate the demonstration program.