Communications have come a long way in the last couple decades. People used to have one phone number. At one point, that was one phone number with no voicemail which meant you either got a hold of the person at their desk, or you didn’t get a hold of that person. Over time, that person has acquired voicemail, email, a mobile phone number, instant messaging. Suddenly, you could communicate with a person almost any time, and almost anywhere…as long as you could figure out which method to use to find them. One of the promising features of Unified Communications in general is the idea of merging the ubiquitous communications methods down to a single client- providing a means for reaching someone any time and anywhere without having to figure out which method to use, and without the receiver having to figure out which device or application to use. Nortel has taken another step in that evolution by providing technologies that bring Unified Communications to the mobile phone by leveraging dual-mode capabilities in some phones to use Wi-Fi networks when in range, and cellular networks when out of range, allowing a single phone number to function both in, and out, of the office. You can learn more by reading this TMCNet article.