Wednesday, May 19, 2010

Guest Blogger Shannon Lucas of T-Mobile on Differences Between MVS & Wi-Fi Calling

Recently, I've received a lot of questions from customers about the difference between RIM's new MVS 5.0 with Wi-Fi Calling (based on SIP) and T-Mobile's Wi-Fi Calling (based on UMA/GAN). There are some pretty important differentiators between these two services.

I see them as complementary solutions that address different user profiles. Customers who are mostly campus-based can take advantage of MVS with SIP while they are in the office or connected to their enterprise network through a VPN.

T-Mobile's Wi-Fi Calling allows customers to extend their PBX extension to their mobile phone over Wi-Fi and provides seamless mid-call transitions between the cellular and Wi-Fi networks. The T-Mobile solution also allows you to use MVS over Wi-Fi in public locations without having to have that VPN back to the corporate network.

T-Mobile launched Wi-Fi Calling four years ago, and the technology has had a lot of time to mature in the market place. It can also be used without MVS to provide coverage and the ability to make calls for free while on Wi-Fi. It's also simple to set up and use.

Both solutions offer benefits to enterprise users, but T-Mobile's Wi-Fi Calling provides a level of freedom and free calling for enterprise customers even when not connected to the VPN.

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