BlueVoice is not only a very stable plug-and-play call logger, but also an enterprise-ready application deployable in various setups.
Centralized multi-site approach for easy administration:

BlueVoice is an open application and integrates support for 99% of PBX vendors proprietary protocols. One BlueVoice server can record from several different branded PBXs.
VoIP supported protocols: SIP, Cisco SCCP ("Skinny") and H.323, audio codecs G.711, G.722, G.726 and G.729 at 8 kbps.

