Thanks for the reply. This was a Frontier installation. I do not think they have any high level security concerns. It is a family business being split up, so family members on one side were worried that the other side was listening to their phone calls. It would not likely be someone trying to hack the voip packets, more so someone picking up an extension and trying to barge in on a call in progress, or possibly accessing a vm box with weak passwords. We think the real leaks they had came from using text messages on a shared cell phone plan that allowed an administrator to see their texts. I saw on Crytycal Services web site that they said the iView could be used to monitor voice as well, but I think that would be a different type of application and if Frontier installed it for maintenance, I doubt anyone else would have access to it anyway. The customer was just getting overly paranoid regarding everything.
Thanks