posted 12-28- 01:00 PM            

A default windows installation will set up the COM port that your modem uses to software handshaking thats XON/XOFF, and 9600bd transer rate. You should set this to Hardware

A default modem driver installation will set the Hardware Handshaking thats RTS/CTS.

You need to make sure that they are the same. Preferable Hardware handshaking
The COM Port talks to the Modem, so MUST USE the same Handshaking protocol, to be reliable.

First check COM PORT
By right clicking on MY COMPUTER
Choose the Properties
CHoose the DEVICE MANAGER Tab
find the line that shows PORTS(COM &LPT)
and expand the option to show the COM port your modem uses. and click on it to hightlight it. Then clcik the Properties button.
Then CLick the PORT SETTINGS tab.
and set the
Bits per second to be 115200
Datab bits 8 (default)
parity none (default)
stop bits 1 (default
Flow Control Hardware

Click Advanced and make sure both sliders are fully to the RIGHT- set on FAST anf the tick is ON use FIFO buffers

NOW CLOSE ALL THOSE WINDOWS AND CHECK MODEM

Open Control Panel
open modems icon
Highlight your modem driver
and click PROPERTIES
Click on the CONEECTION tab
check Data Bits =8
check parity = none
check Stop Bits =1

Now click on the ADVANCED Button
the USE FLow control should be ticked,
and MAKE Sure the Hardware (RTS/CTS) is selected.

Check Compress data oprion has a tick also.

clik OK to save it.
click OK to save again,
and close window

Hope that helps your intermittant problem, and others also.