Re: flexfax: Unspecified Transmit Phase B error

[David Birnbaum <davidb@chelsea.net>]

On Thu, 11 Dec 1997, Yves Trudeau wrote:

> > I installed Hylafax software, got hfaxd and faxq running. Problem is
> > when I try to send a fax with send fax. Modem calls then number, begins
> > to open then connection and then disconnect the line. I got the message
> > in the xferlog file: UNSPECIFIED TRANSMIT PHASE B ERROR.
> 
> I know how you feel..., I have a similar problem. I hate the Sportster
> voice 33.6. The only way I solved this problem is by changing the modem.
> I replaced it with another USR (no voice) with identical IRQ and COM
> settings and... it starts to work normally. From that experience, the
> problem seems to be with the voice part of this modem. Is there a way to
> completely disable the voice mode on a USR modem?

I was having lots of problems with the Phase B transmit errors, but I
recently replaced my modem mish-mash with a USR Total Control chassis that
was freed up from a voice pool.  They are all 33.6 modems, without the
voice capability, and all of my Phase B errors have dissappeared
completely.  The chipset on the TC is the same as the other USR boxes (I
think), and the various info on it is: 

Dec  8 04:32:21 killian FaxSend[8465]: MODEM USROBOTICS COURIER V.EVERYTHING Product type US/Canada Rackmount
Dec  8 04:32:21 killian Options                HST,V32bis,Terbo,VFC,V34+
Dec  8 04:32:21 killian Fax Options            Class 1/Class 2.0
Dec  8 04:32:21 killian Clock Freq             20.16Mhz
Dec  8 04:32:21 killian Eprom                  256k
Dec  8 04:32:21 killian Ram                    32k/Supervisor date 12/02/96
Dec  8 04:32:21 killian DSP date               11/29/95
Dec  8 04:32:21 killian Supervisor rev         1.0.8
Dec  8 04:32:21 killian DSP rev                1.2.7

The only errors I get now are DCS errors like this:

Dec 08 08:48:16.84: [16819]: <-- [23:AT+FIS=0,5,0,2,0,0,0,2\r]
Dec 08 08:48:17.09: [16819]: --> [2:OK]
Dec 08 08:48:17.09: [16819]: <-- [7:AT+FDT\r]
Dec 08 08:48:17.23: [16819]: --> [20:+FCS:0,5,0,2,0,0,0,3]
Dec 08 08:48:29.22: [16819]: --> [7:+FHS:25]
Dec 08 08:48:29.22: [16819]: REMOTE HANGUP: DCS sent 3 times without response (code 25)

or the occasional RSPREC error:

Dec 08 23:42:13.19: [ 8971]: <-- [23:AT+FIS=0,5,0,2,0,0,0,2\r]
Dec 08 23:42:13.45: [ 8971]: --> [2:OK]
Dec 08 23:42:13.45: [ 8971]: <-- [7:AT+FDT\r]
Dec 08 23:42:13.59: [ 8971]: --> [20:+FCS:0,5,0,2,0,0,0,3]
Dec 08 23:42:20.39: [ 8971]: --> [7:+FHS:71]
Dec 08 23:42:20.39: [ 8971]: REMOTE HANGUP: RSPREC error/got DCN (code 71)

I haven't aggressively attacked these last two errors yet - I don't know
enough about low-level faxing protocols to know what causes this, so any
pointers would be helpful.  But on the whole, the TC USR modems seem to do
a dandy job, and I send out about 900 faxes a day right now.

The config file I'm using is right from the 4.0pl1 distribution,
unchanged.

David.