hi
i am also having this problem (in rh 6)
what modem do you use?
my log says
06/17 11:24:39 S15 mgetty: experimental test release 1.1.21-Jul24
06/17 11:24:39 S15 check for lockfiles
06/17 11:24:39 S15 locking the line
06/17 11:24:39 S15 lowering DTR to reset Modem
06/17 11:24:40 S15 send: \dATQ0V1H0[0d]
06/17 11:24:40 S15 waiting for ``OK'' ** found **
06/17 11:24:40 S15 send: ATS0=0Q0&D3&C1[0d]
06/17 11:24:40 S15 waiting for ``OK'' ** found **
06/17 11:24:41 S15 mdm_send: 'ATI'
06/17 11:24:41 S15 Generic Rockwell modem (56000)
06/17 11:24:41 S15 mdm_send: 'ATI3'
06/17 11:24:41 S15 mdm_send: 'ATI4'
06/17 11:24:41 S15 additional info: 'PCtel HSP56 MicroModem Data/Fax'
06/17 11:24:41 S15 modem quirks: 0004
06/17 11:24:41 S15 mdm_send: 'AT+FCLASS=2' -> ERROR
06/17 11:24:41 S15 mdm_send: 'AT+FCLASS=2.0' -> ERROR
06/17 11:24:41 S15 mdm_send: 'AT+FCLASS=2' -> ERROR
06/17 11:24:41 S15 waiting...
06/17 11:24:44 S15 wfr: waiting for ``RING''
06/17 11:24:44 S15 send: ATA[0d]
06/17 11:24:44 S15 waiting for ``CONNECT'' ** found **
06/17 11:25:00 S15 send:
06/17 11:25:00 S15 waiting for ``_'' ** found **
06/17 11:25:09 ##### data dev=ttyS15, pid=678, caller='none', conn='33600', name='', cmd='/bin/login', user='sayam'