Hello, This is like a repost as there was confusion over type of incoming phone lines. Over here incoming voice lines from telcos are called trunk lines. This are basically incoming voice lines that get connected to analog phones. These are not T1 or PRI lines. And lines that get distributed from the PBX within the office area are known as extension phones. My objective is to first build a basic PBX gain experience and then go for a say 100 Lines PBX. I need credibility before I can ask for large funding. I want to build a PBX with the following specs : 1. we have two trunk lines (two incoming direct exchange line from telcos - basically two voice lines , tone mode). 2. we need upto 8 - 12 internal extensions - all analog phones maybe one voip phone What is hardware that I need and where to find it ? Thanks Varun