Total impact on network
Something I have yet to see discussed is the impact on a combined data and VoIP network when everyone picks up their phone and tries to make a call. Will the QoS routines choke out the data traffic? In a company like mine, where the phone traffic is as vital as the traffic to our servers, this is not acceptable. So, I would have to significantly increase the size of my internet pipe in order to provide enough headroom for all the traffic. When the CEO's phone call gets blocked, he can, and will, walk to my office for a "friendly chat." I see no reason to rip out equipment that is already paid for and is almost six-sigma reliable just to be trendy. I plan to let the phone system do phone stuff, and the data network do data stuff for quite some time.
