This is determined by the size of your business. To get it right contact us and we will advise on the best fit.
Call costs are available online at this link
It is also available in your portal.
All phone systems need maintenance and will be carried out on a regular basis. Cloud system will be serviced remotely and the 3CX system have a maintenance program attach to them.
A fibre internet connection is best and full access to your router to configure for you new phone system.
Yes, you have full control over your calling plan.
No. The copper network is being phased out.