50

Using the Internal Modem

Basic operation

CTS/RTS control

This control method is hardware-dependent. To control data flow, the modem and computer transmit Clear To Send/ Request To Send signals to each other. To set CTS/RTS control, enter the following AT command:

AT\Q3

XON/XOFF control

This control method is managed by software. The start/stop signals, that is transfer on/transfer off, are included in the data stream. To set XON/XOFF control, enter the following AT command:

AT\Q1

Please use any settings recommended in your communications software manual.

Facsimiles

Fax communication uses EIA-578 Class 1 commands and requires fax software. Communication is controlled by the fax software.

NOTE: Use only software compatible with EIA-578 Class 1. Do not use EIA-592 Class 2-compatible software.