Re: [hylafax-users] Problem Receiving Faxes

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Steven Jardine wrote:

> I am have been running hylafax for years now on my Mandrake Linux 10.1
> system.  It has 3 - MultiTech (LT V.92 1.0 MT5634ZPX-PCI-U Internal
> Data/Fax/Voice Modem Version 1.32i) modems.  We use them for receiving
> only and they are configured for class 1.0.
>
> The problem it that occasionally we recieve faxes that give "MODEM No
> carrier" messages.  The messages seem to originate from the same fax
> machines and those fax machines return "Poor Line Quality" messages.


The session log below indicates that the sender does not like to hear 
CRP from you during Phase B.  You should have a better time if you 
install HylaFAX+ 5.1.3.  (http://hylafax.sourceforge.net).  Please do 
add "Class1HasRHConnectBug: yes" to your modem config file since it does 
apply to your modems.

HylaFAX+ doesn't send CRP in Phase B any more - and PLUS has the 
workaround that you would have needed in the given log to have recovered 
before even wanting to send CRP in the first place.

> I have tried to fix this by adding "Class1ECMFrameSize:     64" to the
> config file but it doesn't help.


Please don't mess with Class1ECMFrameSize unless you really know what it 
is you're doing.  It changes the preference that the Class 1 ECM driver 
has - against 256 bytes and to the much less-popular 64 byte version 
that may not be well-supported.

Thanks,

Lee.

> May 01 11:06:00.51: [ 2851]: SESSION BEGIN 000029658 18017059051
> May 01 11:06:00.51: [ 2851]: HylaFAX (tm) Version 4.3.3
> May 01 11:06:00.51: [ 2851]: <-- [4:ATA\r]
> May 01 11:06:11.27: [ 2851]: --> [7:CONNECT]
> May 01 11:06:11.27: [ 2851]: ANSWER: FAX CONNECTION  DEVICE '/dev/ttyS5'
> May 01 11:06:11.27: [ 2851]: RECV FAX: begin
> May 01 11:06:11.27: [ 2851]: <-- data [32]
> May 01 11:06:11.27: [ 2851]: <-- data [2]
> May 01 11:06:11.28: [ 2851]: --> [7:CONNECT]
> May 01 11:06:11.28: [ 2851]: <-- data [23]
> May 01 11:06:11.28: [ 2851]: <-- data [2]
> May 01 11:06:11.28: [ 2851]: --> [7:CONNECT]
> May 01 11:06:11.28: [ 2851]: <-- data [13]
> May 01 11:06:11.28: [ 2851]: <-- data [2]
> May 01 11:06:13.58: [ 2851]: --> [2:OK]
> May 01 11:06:13.58: [ 2851]: <-- [9:AT+FRH=3\r]
> May 01 11:06:15.43: [ 2851]: --> [7:CONNECT]
> May 01 11:06:17.35: [ 2851]: --> [10:NO CARRIER]
> May 01 11:06:17.35: [ 2851]: MODEM No carrier
> May 01 11:06:17.35: [ 2851]: <-- [9:AT+FRS=7\r]
> May 01 11:06:17.43: [ 2851]: --> [2:OK]
> May 01 11:06:17.43: [ 2851]: <-- [9:AT+FTH=3\r]
> May 01 11:06:18.38: [ 2851]: --> [7:CONNECT]
> May 01 11:06:18.39: [ 2851]: <-- data [3]
> May 01 11:06:18.39: [ 2851]: <-- data [2]
> May 01 11:06:18.77: [ 2851]: --> [2:OK]
> May 01 11:06:18.77: [ 2851]: RECV send CRP (command repeat)
> May 01 11:06:18.77: [ 2851]: <-- [9:AT+FRH=3\r]
> May 01 11:06:21.21: [ 2851]: --> [7:CONNECT]
> May 01 11:06:22.37: [ 2851]: --> [2:OK]
> May 01 11:06:22.37: [ 2851]: RECV FAX: RSPREC error/got DCN
> May 01 11:06:22.37: [ 2851]: RECV FAX: end
> May 01 11:06:22.37: [ 2851]: SESSION END
>
>  
>
> ------------------------------------------------------------------------
>
> # $Id: lucent-mt-10,v 1.8 2005/12/05 15:48:54 darren Exp $
>
> #
> # prototype config for MultiTech 5634-series modems using
> # the Lucent/Agere chipset supporting V.34-Fax.
> #
>
> #
> CountryCode:            1
> AreaCode:               801
> FAXNumber:              +1.801.705.9051
> LongDistancePrefix:     1
> InternationalPrefix:    011
> DialStringRules:        etc/dialrules
> ServerTracing:          1
> SessionTracing:         1
> RecvFileMode:           0600
> LogFileMode:            0600
> DeviceMode:             0600
> RingsBeforeAnswer:      0
> SpeakerVolume:          quiet
> GettyArgs:              ""
> LocalIdentifier:        "MJN Services, Inc."
> #
>
> ModemType:              Class1.0        # use this to supply a hint
> ModemRate:              57600           # must be at least as fast as the DCE-DCE communication
> ModemFlowControl:       rtscts          # many firmwares have broken software flow control
> Class1EnableV34Cmd:     AT+F34=14,1,2   # 33600-2400 primary, 2400-1200 control
> Class1TMConnectDelay:   400             # counteract quick CONNECT response
> Class1ECMSupport:       Yes
> Class1PersistentECM:    Yes
> Class1ECMFrameSize:     64
>
> #
> # Older firmwares on MainPine cards may require this:
> # Class1Cmd: AT+FCLASS=1
> #
>
> # If your line supports Caller-ID, you may want to uncomment this...
> # ModemResetCmds:       AT+VCID=1
> # CallIDPattern:        "NMBR="
> # CallIDPattern:        "NAME="
>
> # Or with the MT5634ZBA-DID you'll probably need something like...
> # ModemReadyCmds:       AT*DS1*DD0*DF1*DN4      # enable DTMF-DID, wink-start, 4 digits
> # CallIDPattern:        "DTMF"          # format of AT*DF1
> # CallIDAnswerLength:   4               # four DTMF-DID digits then ATA
>
>  


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