It's quite possible that your business will require more than one telephone line, particularly if you are going to need several extensions and possibly fax machines. It's essential to have good quality internet access and email addresses. Think about whether you need very fast upload speeds as well as fast downloading - perhaps you need a fibre-optic connection.
When you're choosing your premises it may well be worth giving consideration to the availability of high quality broadband in the area, and to things like how well the building itself is networked.
The telephone company will bill you every month or quarter for the calls you have made, often plus an amount for the line rental for the next quarter. You may decide that your business will benefit from having mobile phones as well as land lines.
Many different internet service providers (ISPs) offer internet connections and email accounts. Think about whether your business would benefit from a broadband internet connection and from services such as voice over internet protocol (VoIP). Shop around to find the best deal for the package of services your business requires.
Various packages and discount structures are available to business users which can help to reduce telecommunications costs. Contact your telephone company's customer services department for details - and to make sure that you're getting the best deal they offer.