From: Alto Speckhardt
    To: Alle
Thread: Modem trouble  (1/3)
  Date: 16-Nov-97, 1:19pm  (Ref# 5833)

Servus!

I'm facing two problems:

1.) Some modem I use chokes on the ATH0Z-command sent by BGFax. ATHZ would
pass ok, but ATH0Z returns an error. Is there any way to change this command?

2.) When receiving a fax from this modem (14.4 internal, class 2) my "main
modem" (ELSA Microlink ISDN/TL.V34, also class 2) just doesn't do it. BGFax
reports "RTC not detected", the received fax then consists of just the header
line. The sender is presented with "+FHNG: 43!" which I believe means "DTE to
DCE underrun". Swell, like I know what that means.
Is the problem for the FHNG 43 the sending or the receiving side? What can be
done to solve that? (After all, the sender modem is internal - How can there be
a underrun in that case?)

RU!      (48o18'13''N/10o10'32''E)

--- GoldED 2.50+
 * Origin: Weissenhorn Ost (2:2487/4000)



  From: Sylvain Lauzon
    To: Alto Speckhardt
Thread: Re: Modem trouble  (2/3)
  Date: 17-Nov-97, 6:36pm  (Ref# 5834)

AS> line. The sender is presented with "+FHNG: 43!" which I believe means "DTE 
AS> DCE underrun". Swell, like I know what that means.

I wrote down this information few years ago when i broken my modem firmware.
It looks like a receiver problem. Try to downgrade at 9600 everything will 
work fine again.

AS> Is the problem for the FHNG 43 the sending or the receiving side?
                                                      ^^^^^^^^^
note: it could be something else too.

--- Drink or Die
 * Origin: CoM BBS (1:167/146)



  From: B.J. Guillot
    To: Alto Speckhardt
Thread: Modem trouble  (3/3)
  Date: 22-Nov-97, 5:45pm  (Ref# 5854)

> 1.) Some modem I use chokes on the ATH0Z-command sent by BGFax. ATHZ would
> pass ok, but ATH0Z returns an error. Is there any way to change this command?
 
If you are using BGFAX in /HOST or /SEND mode, you can change the ss=
entry (or add the entry if it does not exist) in the BGFAX.CNF file,
ss=ATHZ
 
(The default, if this line does not exist is, ss=ATH0Z)
 
> 2.) When receiving a fax from this modem (14.4 internal, class 2) my "main
> modem" (ELSA Microlink ISDN/TL.V34, also class 2) just doesn't do it. BGFax
> reports "RTC not detected", the received fax then consists of just the header
> line. The sender is presented with "+FHNG: 43!" which I believe means "DTE to
> DCE underrun". Swell, like I know what that means.
> Is the problem for the FHNG 43 the sending or the receiving side? What can be
> done to solve that? (After all, the sender modem is internal - How can there 
> a underrun in that case?)
 
DTE to DCE underrun sounds like BGFAX, for some reason, is not able to
pump bytes out the com port fast enough, on the fax sending modem.
 
It could be a flow-control related problem.  Are you sending and receiving 
the fax on the same computer or from different computers?  If you are
doing it on the same computer, this can sometimes cause problems,
especially with not-very-nice operating systems.
 
What happens if you use the /NB switch on the sender?  The /NB switch
tells BGFAX to Not send the Banner.
 
Regards,
bgfax author