We are switching from T1 lines that are half data and half voice to a fiber optic 10Mb line to each of our remote locations which have less than thirty phones each and a 100Mb fiber optic line to a location with about 60 phones. The use of VOIP will eliminate my needs for voice lines. We are currently using a NEC 2400 PBX as or main switch with a NEC 2000 switch in each of our other locations. I am at the point that I have to expand my current 2400 switch or look for an alternative.
The one thing that I have been impressed with since I took over the Telecommunications position is the stability of the NEC system. Is Cisco Call Manager a stable system? I have found the 2400 switch to be expensive to upgrade and yes I know that you get what you pay for, at least most of the time.