So my fax woes continue… But thank you all for your input.
Like a few of you have mentioned, G711 and T.38 faxing has been very inconsistent. The other day, it seems 90% of faxes were going through. Today I was testing and got less 50%. Of course, this is for a number of factors.
The doctors offices we’re doing VoIP for really prefer using their giant all-in-one machines to send and receive faxes, so it seems an ATA is what we’re going to have to use.
I think I’m going to look into a Level 3 trunk and some different ATA’s. We can choose to only use Level 3 on Anveo, which is a route marked at T.38 capable, but I’m not sure that is the same as getting one directly from Level 3 quality wise. That being said, I have read about a lot of people having bad luck with the Cisco SPA112’s we’re using, and then having much better luck with some other brands/models, using their same SIP trunks.
Funny thing is, a handful of our customers use the same ATA, the same PBX (FreePBX, current distro), and the same trunks we’re providing via Anveo, and never complain.
Oh, how I wish I could get more logical answers in my troubleshooting!
I’m gonna check out Vitelity’s faxing too.
As an optimist, my favorite post is AdHominem’s: “Get rid of the Cisco ATAs and replace them with an Obi 200. I use them all the time for Fax Over IP using G711 with ZERO problems.” I’m definitely buying a couple of these bad boys right now.
Dicko, with hylafax and/or sandsp, this is a purely efax solution correct?
tonyclewis, this may be a good solution too. Thanks.
Thanks again guys for all your input.