Accurate Always is launching a website that better details the ins-and-outs of VoIP call recording. We get a lot of questions about the modalities employed and we wanted to provide a resource that has the facts, just the facts, and nothing but the facts (with a little cameo from Voxida, of course).
If you want to learn about SIP trunk recording, or active and passive interfaces, including sniffing and spanning ports, check it out. There's a section on IP voice recording software options and a list of supported IP PBX, gateways and media servers too.
We want this to be a resource to call center and governmental folks alike. If you have any questions, or need additional information added, please contact us and we'll get on it.