I’ve been tasked with setting up a PBX for a private network. It’s a mesh network with absolutely no outbound calling capabilities at this time (although we might add that in the future). The total number of extensions is expected to be 30 (if it increases, we’ll redesign our system appropriately). Our PBX system is going to be hosted on VMWare ESXi running on an IBM x3550 server (again, at least for now). The system is going to be the most basic that I can setup probably without voicemail capabilities even.
My biggest question is how much hard drive space do I need to set aside for this system? My second question is how many NICs do I need to allocate for the system (I have two physical ones enabled on the server, but can enable four total)? I should add that short-term, we’ll only have about five to ten phones total. The thirty is a long-term goal.
As for the no outbound capability, and any potential questions about 911, all users will know that outbound calls aren’t possible. Also, this is an Emergency Communications related project that I’m working on, so in theory, there will be a phone at the 911 Call Center, as well as local Police, Sheriff, and Fire. That’s far down the road though.
I’m not sure if it matters, but I’m putting the cart before the horse, so to speak. We don’t have any phones picked out yet, so if that’s a consideration in my questions, give me a worst-case scenario.
Thanks and have a great night.