Is Wi-Fi Roaming Really Seamless?

The goal of mobile Wi-Fi is, of course, mobility, but seamless connectivity for users who wander about isn’t always completely seamless. In a world where roaming delays exceeding 100 milliseconds aren’t tolerated (wireless voice), and where giving up on one access point before finally finding another can take up to 5 seconds, users should take such delays into account when deploying wireless LAN applications.
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