Does anyone know how many concurrent calls the 3845 Call Manager Express can handle? I'm trying to determine whether the 3845 Manager Express will be sufficient for our campus. I also need to find a solution for enforced long distance codes.
Yes, you can have all the phones active at the same time, this how cisco tests the IPT platforms. In fact, the router is never involved in media stream, it only handles call setup, teardown, and keepalives to phones. So, not much work.
And yes, you need third-party CDR software to track and account per code or per phone/group toll usage.
Hope this helps, please rate post if it does!