Free Technology, freephone Numbers
There is a huge benefit to a business or organisation of using freephone numbers. They make you appear customer friendly, as if your customer is phoning you from a landline phone they don't pay anything to make the call. Instead the business picks up the bill. They also make you appear national.
And, no software is involved, the 0800 freephone number company, just point the number at your existing landline or mobile phone number, so you don't have to worry about any software or anything else. It really is incredibly simple!