Furuno Felcom 30 Operator's Manual page 127

the Dial Up Adapter, the "FURUNO" procedure has been to try the At+Wreg=1 ,
in order to verify whether or not this has been a SBS or RLES problem.
Verifying MPDS with AT-commands
Access to AT-commands
Instead of using the PC hyperterminal facility, access can easily be
accomplished using vtLite Mobile, or using Hyperterminal.
Start vtLite again:
You can now key in at+wreg=1 from vtLite:
REGISTERED : MPDS is operational
FAILED
SBS
COM1
: MPDS is not operational.
Verify that MPDS is available for
your terminal. See function 99,
Customization > Paid functions.
If necessary, check that MPDS
has been commissioned at your
Net Service provider.
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