Thanks for all the advice. Right now I have worked with asterisk, polycom phones and the varios FXO/FXS cards. Been running my system and tweeking it here or there over the years. Was not comfortable few years ago selling the system as it was a little unstable. I will buy a embeded system and test for a while then consider it as a option to customer that do not have a big enough budget to buy one of the better known brands.

I know my 25 pair color code, 4 pair, 568A/B and done my share of T1 extentions ect. There is more to learn of course but learning the PBX cold though configuration and troubelshooting like that of the Cisco CLI is a good way to start.

Just have to find the right company to get started with. I have also though of going out and doing simple add/move/changes of existing lines which I have done and network sales.