Gasboy CFN III Manager Manual V3.6 - Manual (Page 309)

MDE-4871 CFN III Manager’s Manual for Windows® XP Embedded - Version 3.6 · August 2010 Page F-7
Modems Dialout Communications
When the network software is set up and running, the RD and SD lights flicker every few
seconds. When an authorization is attempted, if the speaker is on you must hear tones
indicating the modem has been given a number to dial. The OH (Off-Hook) light must go on
(see
Figure F-4 ).
Figure F-4: Indicator Lights on Modem - hs, oh, tr, mr On
hs AA CD oh RD SD tr mr
If a good connection is made, the CD (Carrier Detect) light will go on.
Most networks have a setup time called Carrier Wait Timeout. If this is set too short, the site
will hang up before carrier is detected, which must take less than 20 seconds. Twenty seconds
is the default setting. If the CD light as shown
Figure F-5 does not come on, set this parameter to
a larger value and try it again. The modem may be slow in matching the carrier signal with the
host on the other end. If you listen to the modem, you will hear a digital tone; when the tone
shifts, the modem is attempting to sync up with the host. If a carrier signal is detected by both,
the light goes on.
New modems with 14400 and 28000 baud speeds may take several seconds as they “down
shift,” trying to match the host modems which typically run at 1200 and 2400 baud. This is
why GASBOY recommends a Hayes 2400 baud modem, even a used one. The connections
will be faster.
Figure F-5: Indicator Lights on Modem - hs, cd, oh, tr, mr On
hs AA cd oh RD SD tr mr
At this point, the CFN3 application waits for a signal from the host computer. You must see the
RD and SD lights flicker as data is sent back and forth. At the end of the call, the CFN3
application hangs up the modem. OH must go off and the modem must look again as in
Figure F-3 on page F-6 .
Troubleshooting - Quick Diagnostic Checks
No Indicators Lit on the Modem
When the indicator lights are not lit on the modem, proceed as follows:
1 Check power to the modem. At the least, the MR light must be on.
2 Check the cable and the cable connectors.
Only the MR Light is On
Check the cable and the cable connectors.