[hsflinux] can't fax

[lowyuen at xybase.com]

i have a hsf modem installed in my redhat 9.0 machine. I can connect to 
internet through it but can't fax when issue command below 

efax -ve -vi -t 9,26988582 <file_name>

These are the error i get

[root at eMaklum log]# efax -ve -vi -t 9,26988582 faxtosent.txt
efax: Wed Jan 14 18:31:11 2004 efax v 0.9 Copyright 1999 Ed Casas
efax: Wed Jan 14 18:31:11 2004 efax v 0.9 Copyright 1999 Ed Casas
efax: 31:11 compiled Jan 24 2003 18:39:23
efax: 31:11 opened /dev/modem
efax: 31:12 Error: can't determine fax modem class support
efax: 31:12 failed -> faxtosent.txt
efax: 31:12 done, returning 3 (invalid modem response)

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