>Having played around some with zttest (modifying the code to better >understand the issues), it would appear the TDM card consumes about >1.02 seconds to obtain one second of data. That would suggest the
I would like to chime in with my experience: We are trying to use SpanDSP off of a PRI to recieve > 200 faxes a day. It's gone OK but not perfect. Some gotchas that I have found: 1. Timing (as others have said) is totally critical. I found a subtle timing error because our Asterisk box is behind an Adtran channel bank and the Adtran introduced tiny slips occasionally. Upgrading the firmware in the adtran and monkeying around with how the Adtran took it's timing from the PRI took care of it (after consultation with Adtran tech support which is first-rate BTW) 2. ZTTEST is a critical metric. I was getting disconnects on about 20% of faxes until I looked at the output of ZTTEST and found that it was dropping below 99.98% occasionally. Using setpci I changed the latency on the Zaptel boards (T100P & TDM04) to the max, 254 and cranked down the latency on everything else as low as I dared. Now, I get 99.9873% across the board as long as I run the test, and I even get the magic 100% on 1 in 10 test passes. 3. Yes, we have the HP problem, and I don't know how I'm going to deal with it yet. I'll probably set up a "problem fax" line with an analog fax and give that number to those people that have the problem. It's always the same guys. I'm getting a reject rate of about 2-3% which is ok but the endusers of course want no rejects. I have to offset that with the convenience of getting the faxes as PDF's (we would take the paper fax and scan it into our CRM if you can believe it) and the monetary savings of not printing the faxes; we have a click rate from our print vendor and he loves it when we make paper 'cause it's more money for him. No more busy signals on the fax line is a bonus too, people being people the fax will sit idle all day then 15-20 faxes will try to come in simultaneously. _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
