BTW, just a question on this website. I can see that most of the posters here are majority vendors. And setting up a site to help customer troubleshoot the system isn't it a little way too much. Then what's the point of having a reseller or distributor for such PBX systems in a country ?
Just curious to know, and also if doing such, i think any problems that arises might causes the vendors to lose profit. Yes it's true that this can help user's to reduce charges by vendors. But anything that happens during the changes done by customer themselves, the vendor will immediately know that the changes aren't done by themselves but customer.
Isn't it things will be worse ?

But then perhaps you should put the rules as it's for vendors resources only. That should sound appropriate though. JUst my 2 cents.