If you can't get call reports from your telephony service provider, then the easiest to set up is syslog.
The spa400 and the spa9000 can be easily setup to log to a local or remote syslog server.
But, the drawback is that it will syslog alot of data.
I haven't heard of commercial software that can interface with the SPA9000, but i am happy to see this question and see if other community members have a cleaner solution.
The information on how to setup syslog is in the SPA9000 Adminsitrators Guide, or if you are not confortable with doing that, we offer free training for our partners. Check out the following community link; https://www.myciscocommunity.com/docs/DOC-2584
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