[hylafax-users] Unspecified Transmit Phase C error with Class 1

[Andrea.Un@xxxxxxxxxxxxxx]

Hello,

We are currently using Hylafax 4.2.3
with Class 1 modem configurations and would get "Unspecified Transmit
Phase C" error from time to time.  It seems like dialing to a
NSF equipment Brother MFC-3100C/MFC-8600 usually causes this error.  I've
seen an answer for this type of error in the FAQs page for Class 2, but
I don't think I've come across something for Class 1.  Can you suggest
any config settings for Class 1 that can prevent this error from happening?
 I will greatly appreciate your help.  Thanks!

This is the last part of the C-log that
shows where it errored out --
Apr 30 12:22:03.98: [13131]: SEND send
frame number 65
Apr 30 12:22:03.98: [13131]: SEND send
frame number 66
Apr 30 12:22:03.98: [13131]: SEND send
frame number 67
Apr 30 12:22:03.98: [13131]: SEND send
frame number 68
Apr 30 12:22:03.98: [13131]: SEND send
frame number 69
Apr 30 12:22:03.98: [13131]: DELAY
200 ms
Apr 30 12:22:04.19: [13131]: <--
[11:AT+FTM=146\r]
Apr 30 12:22:34.20: [13131]: MODEM
<Timeout>
Apr 30 12:22:34.20: [13131]: SEND end
page
Apr 30 12:22:34.20: [13131]: Unspecified
Transmit Phase C error
Apr 30 12:22:34.20: [13131]: <--
[9:AT+FTH=3\r]
Apr 30 12:22:41.76: [13131]: -->
[0:]
Apr 30 12:22:41.76: [13131]: <--
[5:ATH0\r]
Apr 30 12:22:46.77: [13131]: MODEM
<Timeout>
Apr 30 12:22:46.77: [13131]: SESSION
END

This are the types of Class 1 modem
configuration that we are currently using, our modems are MultiTech v.92
--
ModemType:        
     Class1          # use Class
1 interface
ModemRate:        
     19200           # lock rate
for DCE-DTE communication
Class1TMConnectDelay:   400  
          # counteract quick CONNECT response
ModemFlowControl:      
rtscts          # hardware flow control is default
ModemHardFlowCmd:      
AT&E4           # hardware flow control command
ModemSoftFlowCmd:      
AT&E5           # software flow control command
ModemSetupDTRCmd:      
AT&D3           # setup so DTR drop resets
modem
ModemSetupDCDCmd:      
AT&C1           # setup so DCD reflects carrier
(or not)
ModemDialCmd:      
    ATDT%s          # T for tone dialing

-and-

ModemType:        
     Class1          # Class1 drivers
are greatly improved in v4.2.3
ModemFlowControl:      
rtscts          # many firmwares have broken software
flow control
Class1TMConnectDelay:   400  
          # counteract quick CONNECT response


Andrea