This switch is incredible and heavy-duty. It requires two servers and they must be good servers. We run on Dual Xenon with 48 gigs of RAM and Solid State Disc Drives in a RAID 0 configuration.
One server handles the traffic and the other server handles the accounting. So keep in mind that your data center cost is double because you need two servers. One is the Oracle DB and the other is the session border controller. This setup is able to handle at least 2000 concurrent calls. If you run as signalling proxy you could likely get 5000 concurrent calls.
This switch does not have modules for calling cards, or call-shops are any of those things. It does not have a built-in auto-dialer with IVR. It has no PBX like functions.
This switch is a monster and on a par with a Nextone switch. Lot's of folks struggle with this switch because it has so many ways it can be configured and has so many switches, controls, and options. Most likely you need someone with a few years of experience to run this switch.
If you have run switches before and you are comfortable with uploading rate decks and setting up Least Cost Routing rules, you will be able to learn this switch pretty fast.
If you are a beginner, this is a lot of switch and it will take a long time to learn all the components.
Of course the real question is which switch is right for your traffic? If you are strictly wholesale, this is a fantastic switch