My personal favourite way to retrieve SMDR/CDR details is via Scannex data buffers. They are designed to be on the network, on and up 24×7 365. They can capture serial streams and come with the right cables. They can also listen to Avaya PABXs over TCP/IP and there is a wealth of connectors built in. For retrieving data there are just as many options. www.scannex.co.uk
The other connector that looks interesting is http://pabxsoft.com/eng/index.htm I’m not familiar but heard good things. If I were looking for a software solution to run on a server I’d look here. My only issue with this is if the computer it runs on goes offline, is being updated or other service interuption then it’s not listening to the PABX and data loss may occur in that time window. I prefer a hardware device as per the Scannex with no moving parts and a dedicated purpose in life to collect data.