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Fax class 1 and fax class 1.0 commands, 1 fax i/o processing, Conexant – Comtrol AT Commands for SmartACFL User Manual

Page 107

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Command Reference Manual

100722A

Conexant

4-1

4.

FAX CLASS 1 AND FAX CLASS 1.0 COMMANDS

4.1

FAX I/O PROCESSING

The fax I/O interface supports asynchronous serial and parallel interfaces. The character format is 8 bits data, no parity, and 1
stop bit. Start and stop elements are removed from the transmit data and added to the receive data. Both transmit and
receive data are buffered. Flow control using XON/XOFF or RTS/CTS is provided.

Unique control character strings are identified, filtered, or reinserted into the I/O data stream. These control characters and
their resultant action are described below.

4.1.1

DTE-to-Modem Transmit Data Stream

Characters Detected

Action Taken

Delete characters.

Recognize as a string terminator and take appropriate action.

Replace with single character.

4.1.2

Modem-to-DTE Receive Data Stream

Characters Detected

Action Taken

Insert extra ahead of .

The modem also identifies the end of a frame by inserting into the data stream after the FCS bytes.

4.1.3

Fax Mode Selection

Fax Class 1 and Fax Class 1.0 commands are identified in Table 4-1. Fax Class 1.0 includes all Fax Class 1 commands.

Table 4-1. Fax Class 1 and Fax Class 1.0 Commands

Command/Parameter

Function

Applicable in

Fax Class 1

Applicable in

Fax Class 1.0

+FCLASS=

Select, read or test service class

X

X

+FAA=

Auto answer enable

-

X

+FAE=

Auto answer enable

X

X

+FTS=

Stop transmission and pause

X

X

+FRS=

Wait for silence

X

X

+FTM=

Transmit data with carrier

X

X

+FRM=

Receive data with carrier

X

X

+FTH=

Transmit HDLC data with carrier

X

X

+FRH=

Receive HDLC data with carrier

X

X

+FAR=

Adaptive reception control

-

X

+FCL=

Carrier loss timeout

-

X

+FDD=

Double escape character replacement control

-

X

+FIT=

DTE inactivity timeout

-

X

+FPR=

Fixed DTE Rate

-

X

+FMI?

Report manufacturer ID

-

X

+FMM?

Report model ID

-

X

+FMR?

Report revision ID

-

X

+FLO

Flow Control

-

X

&K

Local DTE-modem flow control (see Section 3.2.2.8)

X

X

A

Answer (see Section 3.2.3.4)

X

X

D

Dial (see Section 3.2.3.1)

X

X

H

Hangup (see Section 3.2.3.5)

X

X

X = Applicable; - = Not applicable.

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