Re: [hylafax-users] 4.2.1 Job Batching with MultiTech MT2834ZDX Modems

[Michael Boers <msb@xxxxxxxxxxxxxxx>]

Lee,

Thanks for the quick update, the patch works perfectly!

--
Michael Boers

On Jan 26, 2005, at 12:52 PM, Lee Howard wrote:

> (I accidentally hit "send" prematurely last time.)
>
> On 2005.01.26 07:35 Michael Boers wrote:
>
> > Questions:
> > 	1.	Is there a way to disable job batching globally rather than on a  
> > per destination basis?
>
> I had intended on adding a modem "SupportsBatching" config option, but 
> it looks like I didn't do it.  If someone opens a Bugzilla report on 
> it, or adds a note to the existing batching bug report, then I will 
> eventually get around to it.  However, I'd much prefer fixing any 
> batching errors first.
>
> > 	2.	Is there a fix for this?
>
> I think that the attached patch will fix it for you.
>
> > Partial Log File Follows, notice how the FDCS parameters from the  
> > receiving machine at time 09:38:48.53 and 09:39:17.66 are different.
>
> In Class 2 HylaFAX indicates to the modem what DCS parameters it wants 
> the modem to use by way of the +DIS command.  HylaFAX traditionally 
> only sends +DIS before the first page is sent and thereafter before 
> any page where the session parameters need to change.  If the session 
> parameters don't need to change, then it doesn't send +DIS.
>
> > Jan 26 09:38:41.21: [67876]: USE 3.85 line/mm
> > Jan 26 09:38:41.21: [67876]: USE 2-D MR
> > Jan 26 09:38:41.21: [67876]: <-- [24:AT+FDIS=0,5,0,2,1,0,0,2\r]
> > Jan 26 09:38:41.48: [67876]: --> [2:OK]
> > Jan 26 09:38:41.48: [67876]: <-- [7:AT+FDT\r]
> > Jan 26 09:38:48.53: [67876]: --> [21:+FDCS:0,5,0,2,1,0,0,3]
> > Jan 26 09:38:48.53: [67876]: --> [7:CONNECT]
>
> > Jan 26 09:39:05.29: [67876]: SEND send EOM (more documents)
>
> > Jan 26 09:39:10.85: [67876]: USE 3.85 line/mm
> > Jan 26 09:39:10.85: [67876]: USE 2-D MR
> > Jan 26 09:39:10.85: [67876]: <-- [7:AT+FDT\r]
> > Jan 26 09:39:17.66: [67876]: --> [21:+FDCS:1,5,0,2,1,0,0,1]
> > Jan 26 09:39:17.66: [67876]: --> [7:CONNECT]
>
> Notice that the modem seems to have "forgotten" our previous +DIS 
> command.  Looks like we need to send +DIS after every instance of EOM, 
> too, then.  Please try the attached patch and let me know how it goes.
>
> I think that this really stems from a bug with the modem.  My thinking 
> is that the modem should remember the +DIS command.  However, we can 
> easily work around the error by reminding the modem.  Furthermore, I 
> think that the MT2834ZDX is end-of-life, and so you won't see any 
> fix-it support from the manufacturer.
>
> Lee.
>
>
> !DSPAM:41f7d908776471305011051!
> <hylafax-eomdiscmdfix.patch>


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