Furuno FELCOM 70 Operator's Manual page 189

Problem
7 No GPS
8 Problems with data
communication.
9 Routing of calls
10 Problem with local calls
11 Problem with call transfer
12 Problem with Distress
13 No communication. Noisy
at communication
Probable cause
GPS alarm, or no
GPS readout
Wrong PC settings
MSN number not
entered properly
Wrong dialing
Distress Alarm
Displayed "All channel
busy"
7. TROUBLESHOOTING
Action
• Wait for 15 minutes. The GPS
may use up 15 minutes if
FELCOM 70 has switched off for
more than 6 hours. If not the
case, GPS will report position to
the vtLite Mobile and handset
display when the system logs on
to the satellite.
• Check the PC program settings:
speed 115200 bps, 8 data bits, 1
stop bit, no parity
if RS232 is used (default settings
in F77 CU).
• If shore/land side has an
analogue modem, use 3.1 kHz
service in FELCOM 70.
• If shore/land side has ISDN
connection, use 64 kbps UDI
service.
• If shore/land has 56 kbps UDI
(some states in America), use 56
kbps UDI data service.
• Contact the PC applications
vendor for help.
• Make sure that the MSN number
entered into FELCOM 70 with the
Device Manager, is also entered
into connected equipment. Some
ISDN devices can be
programmed with multiple MSNs
and will answer different services
and MSNs.
• Check that you call the correct
MSN number. If Access Code is
used, you need to enter this code
first
• ISDN-to-ISDN:
• Phone does not support "R"
button.
• Not possible to transfer call from
analogue to ISDN.
• Make sure that the ISDN
Handset related to the Distress
Alert Unit is properly connected.
• Test distress buzzer using the
ISDN Handset function Priority
Call or vtLite Mobile.
• Use AT command as follows to
reset.
"AT + WNERARESET [ENTER]"
MSN
7-3