We need

one of this https://store.digium.com/boards/#search/1AEX404EF

one of this https://store.digium.com/boards/#search/1TE220BF

one of this http://www.snom.com/en/products/ip-phones/snom-370/ with external power adaptor

and one of this http://www.snom.com/en/products/ip-phones/snom-320/ with external power adaptor

Let me know costs and delivery times to nairobi kenya.

Thanks!