Hi how are you?
My name's Javier Aguilar, I'm Systems and telecommunications engineer with over 22 years experience on IT service.
I've more 5 years on GrandStream UCM and phones, I'm certified on GrandStream, so, I can do this job for you.
One thing is do configurations, and other provide How-To-Make-It knowledge, if you wanna training you must pay for it. Your budget $ 10 to 30 for setting up a pbx and training on how-to is unreal.
My proposal is accurate to your request, I'm online if you like discuss details by chat.
Regards,
Javier Aguilar
IT Business Corp.
Montevideo (GMT-3:00). Uruguay.