Furuno Felcom 250 Service Manual page 34

Details of modifications
1) Remedy for voice distortion
When both parties talk loudly simultaneously in Voice communication, the voice
was distorted. Voice processing is modified.
* Modem software is modified.
2) Remedy for FAX communication
FAX communication between vessel and shore was lower success rates.
Timing of the sending processing is modified.
* Modem software is modified.
3) Remedy for false recognition of FAX and Voice incomings
When an anonymous call was incoming from calling party, an incoming fax call
was incorrectly recognized as an incoming Voice call.
Data processing of an anonymous call is modified.
* Modem software is modified.
4) Remedy for data communication
When the number of characters of Access Point Name (APN) in SIM card
exceeded 32, the data communication was disabled.
Reading process for the number of characters of APN is modified.
* Hub software is modified.
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