Hey Adam, we a very experienced business in IVR market (since 1988) and deployed an IVM IVR app to Coca Cola here in Brazil. Purchased an Enterprise version along with customization. We believed that IVM was "THE" great solution that we had been looking for. But it gave us a hard time with our client. First we realized that IVM was so good to work with that we couldn´t believe it! Every feature was so nice ... We finally came to the site to deploy it. During the tests we never attempted to the fact that we were genereting no more than 3 simultaneous SIP calls. And we decided to turn it into production environment. We started to test via public telephony network and as the calls started to came in, the audio played to ALL simultaneous calls was so CHOPPY...and it got more choppy as more calls came. Result: we returned to the old analog version of the service with a CLOWN version of ourselves! It was so ridiculous..We were working with Siemens SIP experts. They were intalling 2 Siemens 8000 full sippbx and 2 4000 units (hybrid). We have tried it all!!!! And no solution. We finally have isolated the problem, and it was within IVM. We had a very nice computer, fully loaded, a very advanced SipPbx with very good technicians. I rushed to NCH´s tech support (ghosts) and they give me evasive answers. They post that IVM is capable of handling 64 simultaneous calls on their site but it was a lie so far. They sent us today (04-30-09) a so called fixed-bug version. Be very carefull. We haven´t tested the new version yet. We´ll let you know of our advances here.
regards
neway