Nominum

Based: Redwood City,CA
Founded: 1999
www.nominum.com

Signaling and addressing in the VoIP world is still a tower of Babel. Think of all the steps required to get a call from an IP phone on one network island to another phone on a different island. It's like driving a car from Manila to England by way of Beijing without relying on boats or a translator. Nominum's Navitas product builds on the ENUM standard to create routing directories that make sure that calls placed Here can find their way There. Nothing sexy or splashy, but Nominum is an important infrastructure player that makes some of the biggest carriers work.

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