Re: flexfax: communication failure during phase C

["Prof. Julio C. Spinelli" <spine001@gold.tc.umn.edu>]

Dave,

I have had the same problem with a USR Sportster, luckily it happens very
rarely, I was never able to figure out what to do about it. As we do
mostly international faxing, I changed the timeout to 36 seconds only
instead of the 3 minutes. This solves the issue of large phone expenses
for these failures.

If you find how to deal with this please let me know,

Julio

On Tue, 21 Oct 1997, Dave Lewis wrote:

> Hello all.
> I'm getting occasional above errors with an AT&T DataPort 14.4 modem I 
> just installed a few days ago.  The error always occurs at the end of 
> sending a page of data, and it is a timeout;  it's as if the receiving 
> modem does not recognize whatever commands are used to signify the end of 
> a page.  The problem appears to be random, and happens maybe 1 in 10 
> fax-send sessions.  Here's the end of a typical failed-session log file:
> Oct 21 10:41:47.09: [66246]: <-- data [1027]
> Oct 21 10:41:47.95: [66246]: <-- data [1026]
> Oct 21 10:41:48.96: [66246]: <-- data [1028]
> Oct 21 10:41:49.24: [66246]: <-- data [1026]
> Oct 21 10:41:49.51: [66246]: <-- data [1024]
> Oct 21 10:41:49.78: [66246]: <-- data [1026]
> Oct 21 10:41:50.04: [66246]: <-- data [1024]
> Oct 21 10:41:50.31: [66246]: <-- data [15]
> Oct 21 10:41:50.58: [66246]: SENT 25615 bytes of data
> Oct 21 10:41:50.58: [66246]: <-- data [2]
> Oct 21 10:41:51.38: [66246]: SEND end page
> Oct 21 10:44:51.38: [66246]: MODEM <Timeout>
> Oct 21 10:44:51.38: [66246]: <-- [6:AT+FK\r]
> Oct 21 10:44:51.53: [66246]: --> [5:AT+FK]
> Oct 21 10:44:51.53: [66246]: --> [5:ERROR]
> Oct 21 10:44:51.53: [66246]: MODEM Command error
> Oct 21 10:44:51.53: [66246]: <-- [5:ATH0\r]
> Oct 21 10:44:51.67: [66246]: --> [4:ATH0]
> Oct 21 10:44:51.67: [66246]: --> [2:OK]
> Oct 21 10:44:51.67: [66246]: SESSION END
> 
> You can see the timeout from 10:41-10:44.  Any ideas?  This is a class2 
> modem.  Thanks, Dave Lewis
>