Even when the customer is not roaming, wireless calls to foreign countries will cost more than 10 cents a minute.

Another significant part of Western Wireless's business is leasing network space to national carriers when their customers roam into the rural areas.

T-Mobile (www.t-mobile.com) is marketing a new service, World Class, that allows customers to roam in more than two dozen European countries for as little as 99 cents a minute.

It allows customers to roam across the Channel Islands and Isle of Man without incurring roaming charges.

In April 2012, the T-Mobile network in Northern Ireland was switched off, meaning that all customers there roam on to Orange.

Among other things, the company is planning to begin services that allow customers to roam the country, shifting from wired to wireless telephones and receiving calls dialed to a single telephone number.

Bundled monthly subscription plans were offered (Bridge DataRoam15 and Bridge DataRoam40), applicable when customers roam on Bridge Alliance member networks.

As of recent customers can now roam on Vodafone and Yoigo.

Their service is stated to be portable and customers can roam within all 60 of the Northern communities that SSI Micro serves.

Outside these cities, customers roam on the network of the Norwegian operator Telenor.