Lee Howard wrote:
However, based on the comments you give I'd suspect that you're having
what people seem to be calling "frame slipping". There seem to be some
motherboards that react poorly with Zap cards (or their respective
drivers) and cause that. Your zttest results should be revealing here.
We hadn't thought of using zttest. I'll do some research on how it can
be used to detect frame slips and problems of the sort, and will post
our results later. Great pointer, though!
The concurrent calls really isn't that big of a deal, either, if
those are your thoughts. The bigger issue seems to be the quality of
the audio as it is delivered to the fax application/modem.
Interesting. The little information I've found on the subject seemed
to imply that Asterisk couldn't handle more than a handful of fax calls
using software DSP. This could also be explained away by frame slips
too, right?
In my experience Sangoma offers better (or maybe just more caring)
post-sale support than does Digium, however, the "frame slipping" issue
seems to happen with both sets of hardware.
Thanks for clearing that up. I had begun to get the impression that
Sangoma cards were overall better cards than Digium's. It seems that's
not necessarily the case.
As for Eicon Divas being used for IVR, I've never used them
that way.
We haven't, either. It had just come to our attention, however, that
using hardware DSP might be a better bet. Nevertheless, little research
was done with respect to using Eicon Divas as something similar to a Zap
device with Asterisk. It seems chan_capi might do the trick.
The most success I've seen has been to bridge the call through Asterisk
to a T1 fax modem such as a Patton 2977 or an Eicon Diva Server with
HylaFAX running the modems.
Now THAT is a very good idea! To us, it means that if push comes to
shove, there is a certain method for having IVR and reliable faxing
available during a single call. Thank you! But just to make it clear,
woudn't frame slips enter the picture here too?
In any case, thank you for replying, Lee! Your post was extremely
helpful.
Adolfo R. Brandes
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
Asterisk-Users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
