Another unit, Ulticom, creates software for signaling associated with things like roaming wireless service and text messaging.

FORBES: Magazine Article

Another unit, Ulticom (other-otc: ULCM - news - people ), creates software for signaling associated with things like roaming wireless service and text messaging.

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If you are a U.S. cellular customer and travel to Canada, you will be paying for roaming voice and data service at a much higher rate than at home.

FORBES: How to Save Money on Mobile While Traveling in Canada

Globalgig is a unique service that removes the need for expensive roaming costs when accessing mobile broadband across its international network.

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It will use roaming deals with national wireless providers so users can get service elsewhere.

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This means that if you purchase a local micro-SIM card (the ones compatible with the new iPad) you can make and receive phone calls on Skype or other VoIP service for about two cents a minute, in contrast to the high cost of roaming voice calls based upon all of the U.S. carriers pricing plans.

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Since roaming has not been enabled on LTE, subscribers who travel or live in areas without consistent coverage will lose LTE service frequently, and their phones could run down their batteries hunting for a signal.

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