Smartcom Iii - V 1.1 - AT&T 7400B Plus User Manual

DEFINITY Communications System
7400B Plus Data Module
User´s Guide

SMARTCOM III - V 1.1

7400B Plus
Caveats
SMARTCOM is a data communications software package
produced by Hayes Microcomputer Products, Inc.
The 7400B Plus is set up in Smartcom III's Direct Mode.
Under the "Connection Settings" option, the type of
1
connection must always be set to DIRECT CONNECTION.
If the type of connection is set to either Modem Originate or
Modem Answer, the 7400B Plus will not respond to the
commands that are sent. Smartcom III will reply with Modem
not responding on COM1.
In the event that Modem Originate or Modem Answer has been
selected as a connection setting (as recommended by the
Smartcom III documentation) and a set-up sequence has
been transmitted to the 7400B Plus, the 7400B Plus must be
reset to its default settings before it can operate in the Direct
Connect mode. To reset the 7400B Plus, the following
default procedures should be executed:
Terminate the call that sent the Modem Originate or
a
Modem Answer sequence.
Establish a new call using the Direct Connection
b
option.
Send the following command sequence to the 7400B
c
Plus:
Press the <CTRL> and ^ keys simultaneously.
Type at&f
Press <ENTER>
When calling a PC running Smartcom III that is set up for
2
Remote Access, the call originator must always set the
transmission speed to 2400 and below.
If a higher speed has been selected, the calling party will get
a garbled screen upon connection.
When selecting file transfer protocol, select either XModem or
3
XModem CRC.
CHAPTER 4: PC APPLICATIONS
Page 4-57