Compression Setup - Furuno Felcom 30 Operator's Manual

6. DATA COMMUNICATION
6.5.2

Compression setup

Compression function
With the compression function set to automatic negotiation (default), the data
call will proceed using the standard preferred by the shore modem.
If the shore modem has no compression software, the data transfer will be
uncompressed.
To set up and/or verify the compression:
1 Open the MENU and scroll down to Ports:
2 Scroll down to Compression:
3 Selecting Negotiation allows setting the
compression function to Automatic or
Disabled, as required:
(applies to all three serial ports).
4 During transfer, selecting Information shows
type of protocol used:
V.44
V.42bis
compression inactive
When set up for data compression, the idle window in vtLite Mobile appears as
shown below.
Examples:
Note: Disabled means no compression.
Automatic means that AT command settings are valid, see
"Compression settings".
If problems with the transfer, try reducing the port speed from 115200 bps
to 57600 bps (recommended).
The speed can be set from the Display Handset.
6-86
SBS
Compression
standard used.
COM1 43C 33C
Transmitted file compressed
approx. four times.
Sat. Search
Phone setup
Set Network
››
Ports
Information
››
Port A
OK
Port B
COM defaults
NMEA port
Compression
OK
››
Negotiation
Information
››
Disabled
OK
Automatic
››
compression
OK
V.44
Received file compressed
approx. two times.