I'm trying to get mgetty+sendfax work with US Robotics Sportster 33.6 Faxmodem on RH9. After configuring /etc/inittab, sendfax.config and mgetty.config, i was able to receive fax. However, when i tries to send fax, an Trasmission Error ocurred: RSPEC error (+FHNG 24). What is this error? How can I correct this error so that i can send fax using mgetty+sendfax with USR Sportster modem.

Hope someone can help me. Any help from you will be greatly appreciated.

Here is a copy of the sendfax.config i configured:
verbose y
debug 9
fax-devices ttyS1
fax-id 9876543
max-tries 3
max-tries-continue y
speed 115200

mgetty.config:

debug 4
fax-id 9876543
speed 38400
port ttyS1
debug 9
data-only n
fax-only y
fax-id 9876543
rings 2
speed 115200

a snippet of the /var/mgetty+sendfax/sendfax.log sending fax to fax number 8888888 :
01/24 10:37:12 yS0 tss: set speed to 115200 (10002)
01/24 10:37:12 yS0 mdm_send: 'ATV1Q0'
01/24 10:37:12 yS0 got:ATV1Q0[0d]
01/24 10:37:12 yS0 mdm_command: string 'ATV1Q0'
01/24 10:37:12 yS0 got:[0d][0a]OK[0d]
01/24 10:37:12 yS0 mdm_command: string 'OK' -> OK
01/24 10:37:12 yS0 mdm_send: 'ATI'
01/24 10:37:12 yS0 got:[0a]ATI[0d]
01/24 10:37:12 yS0 got:[0d][0a]3362[0d]
01/24 10:37:12 yS0 mdm_gis: string 1: '3362'
01/24 10:37:12 yS0 got:[0a][0d][0a]OK[0d]
01/24 10:37:12 yS0 mdm_identify: string '3362'
01/24 10:37:12 yS0 USR Courier/Sportster V.34(+) detected
01/24 10:37:12 yS0 mdm_send: 'ATI3'
01/24 10:37:12 yS0 got:[0a]ATI3[0d]
01/24 10:37:12 yS0 got:[0d][0a]Sportster 33600/Fax V2.32[0d]
01/24 10:37:12 yS0 mdm_gis: string 1: 'Sportster 33600/Fax V2.32'
01/24 10:37:12 yS0 got:[0a][0d][0a]OK[0d]
01/24 10:37:12 yS0 additional info: 'Sportster 33600/Fax V2.32'
01/24 10:37:12 yS0 mdm_send: 'AT+FCLASS=2.0'
01/24 10:37:12 yS0 got:[0a]AT+FCLASS=2.0[0d]
01/24 10:37:12 yS0 mdm_command: string 'AT+FCLASS=2.0'
01/24 10:37:12 yS0 got:[0d][0a]OK[0d]
01/24 10:37:12 yS0 mdm_command: string 'OK' -> OK
01/24 10:37:12 yS0 mdm_send: 'AT+FLI="9876543"'
01/24 10:37:12 yS0 got:[0a]AT+FLI="9876543"[0d]
01/24 10:37:12 yS0 mdm_command: string 'AT+FLI="9876543"'
01/24 10:37:12 yS0 got:[0d][0a]OK[0d]
01/24 10:37:13 yS0 mdm_command: string 'OK' -> OK
01/24 10:37:13 yS0 mdm_send: 'AT+FCC=1,5,0,2,0,0,0,0'
01/24 10:37:13 yS0 got:[0a]AT+FCC=1,5,0,2,0,0,0,0[0d]
01/24 10:37:13 yS0 mdm_command: string 'AT+FCC=1,5,0,2,0,0,0,0'
01/24 10:37:13 yS0 got:[0d][0a]OK[0d]
01/24 10:37:13 yS0 mdm_command: string 'OK' -> OK
01/24 10:37:13 yS0 mdm_send: 'AT+FBO=0'
01/24 10:37:13 yS0 got:[0a]AT+FBO=0[0d]
01/24 10:37:13 yS0 mdm_command: string 'AT+FBO=0'
01/24 10:37:13 yS0 got:[0d][0a]OK[0d]
01/24 10:37:13 yS0 mdm_command: string 'OK' -> OK
01/24 10:37:13 yS0 mdm_send: 'AT+FNR=1,1,1,0'
01/24 10:37:13 yS0 got:[0a]AT+FNR=1,1,1,0[0d]
01/24 10:37:13 yS0 mdm_command: string 'AT+FNR=1,1,1,0'
01/24 10:37:13 yS0 got:[0d][0a]OK[0d]
01/24 10:37:13 yS0 mdm_command: string 'OK' -> OK
01/24 10:37:13 yS0 mdm_send: 'AT+FLO=2'
01/24 10:37:13 yS0 got:[0a]AT+FLO=2[0d]
01/24 10:37:13 yS0 mdm_command: string 'AT+FLO=2'
01/24 10:37:13 yS0 got:[0d][0a]OK[0d]
01/24 10:37:13 yS0 mdm_command: string 'OK' -> OK
01/24 10:37:13 yS0 fax_send: 'ATD8888888'
01/24 10:37:13 yS0 fax_wait_for(OK)
01/24 10:37:13 yS0 got:[0a]ATD8888888[0d]
01/24 10:37:13 yS0 fax_wait_for: string 'ATD8388857'
01/24 10:37:13 yS0 got:[0d][0a]+FCO[0d]
01/24 10:37:30 yS0 fax_wait_for: string '+FCO'
01/24 10:37:30 yS0 got:[0a][0d][0a]+FCI:" "[0d]
01/24 10:37:32 yS0 fax_wait_for: string '+FCI:" "'
01/24 10:37:32 yS0 fax_id: '+FCI:" "'
01/24 10:37:32 yS0 got:[0a][0d][0a]+FIS:1,3,0,2,0,0,0,4[0d]
01/24 10:37:32 yS0 fax_wait_for: string '+FIS:1,3,0,2,0,0,0,4'
01/24 10:37:32 yS0 got:[0a][0d][0a]OK[0d]
01/24 10:37:32 yS0 fax_wait_for: string 'OK'** found **
01/24 10:37:32 yS0 sendfax: IGNORE DCD (carrier) status
01/24 10:37:32 yS0 fax_send_page("irene.g3") started...
01/24 10:37:32 yS0 tio_set_flow_control( HARD )
01/24 10:37:32 yS0 fax_send: 'AT+FDT'
01/24 10:37:32 yS0 fax_wait_for(CONNECT)
01/24 10:37:32 yS0 got:[0a]AT+FDT[0d]
01/24 10:37:32 yS0 fax_wait_for: string 'AT+FDT'
01/24 10:37:32 yS0 got:[0d][0a]+FCS:1,3,0,2,0,0,0,0[0d]
01/24 10:37:32 yS0 fax_wait_for: string '+FCS:1,3,0,2,0,0,0,0'
01/24 10:37:32 yS0 transmission par.: '+FCS:1,3,0,2,0,0,0,0'
01/24 10:37:32 yS0 got:[0a][0d][0a]+FHS:24[0d]
01/24 10:37:38 yS0 fax_wait_for: string '+FHS:24'
01/24 10:37:38 yS0 connection hangup: '+FHS:24'
01/24 10:37:38 yS0 (RSPEC error)** found **
01/24 10:37:38 yS0 AT+FDT -> some error (24), abort fax send!
01/24 10:37:38 ##### failed transmitting irene.g3: phone="8888888", +FHS:24, dev=ttyS0, time=25s, acct=""

01/24 10:37:38 yS0 fax_send: 'AT+FCLASS=0'
01/24 10:37:39 yS0 removing lock file

-Ayrin-