·If the RSSI LED is on solid, this indicates an RSSI level of -90dbm or
greater.
While not in a data session, the modem checks for RSSI once every 5 seconds,
which causes the Tx/Rx LED to blink briefly.
2.0 Modem Setup Guide
This following subsections will assist in configuring your modem to interface and operate
with your data terminal.
2.1 Getting Started
1. Ensure that terminal emulation software such as Hyperterminal® or ProComm® is
installed on your system. Hyperterminal is preinstalled in most versions of Microsoft
Windows®.
2. Connect a serial cable from the RS-232 port on the modem to an enabled
communications port on your system. Please note that for most applications this must be
a straight through serial cable and not a null modem cable. See the FAQ, section 11.0, for
more information on when to use a Null Modem cable.
3. The following modem setup applies for Windows 98, Me, NT, 2000 & XP®. Due to
the divergent graphical interfaces of these different operating systems, there may or may
not be an extra step to follow (e.g. an additional procedure to open a program from the
Start Menu). This guide is optimized for Windows XP Professional.
3.0 Using Terminal Emulation Software To Talk To The Modem
You can access the modem through a terminal emulation program such as Hyperterminal,
which should already be installed in your version of Windows. To launch Hyperterminal,
click on the
Start Menu
, go to
Programs
-->
Accessories
-->
Communications
-->
Hyperterminal
. If prompted, you may name this connection "TEST" or give it any other
appropriate name. After clicking OK, the "Connect To" box will appear. In the "Connect
Using" box, you may see several listings such as COM1, COM2 any modems that are
currently installed in the computer. Do not attempt to connect to the modem via the
modem. Instead, select COM1 (or whatever port you have the modem connected to) from
the drop-down list. After clicking OK, you should be prompted with a "Port Settings"
dialog box. Make certain that the "Bits per Second" option is set to "57600". The "Data
bits" should be listed as "8", Parity "None", Stop Bits "1" and Flow Control "Hardware".
Click "Apply" and "OK". By default, the modem’s Flow Control protocol is Hardware,
but this can be adjusted with the
AT+IFC
command. Please see the sections entitled
"Frequently Asked Questions"
and
"Extended AT Configurations Command Table"
for
more detailed information pertaining to this and other communications commands.
3.1 Serial Connection Reference Table
Below is a quick reference of the default communication parameters of the modem:
Bits Per Second:
57600
Data Bits:
8
Parity:
None
Stop Bits:
1
Flow Control:
Hardware
