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Microsoft® Lync Server 2010 Unleashed by Tom Pacyk, Andrew Abbate, Alex Lewis

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E911

Primarily developed for North America, enhanced 911 (E911) allows for additional information to be presented to the public service answering point (PSAP) that enables emergency personnel to obtain details about the specific location of an emergency call. These additional attributes are a building number, mailstop, cubicle number, or any other specific attribute that can save precious seconds in an emergency situation.

Because VoIP is mobile, simply relying on a telephone number is not suitable for IP communications. The new location information service (LIS) role in Lync Server enables network identifiers such as switch ports, subnets, and wireless BSSID information to be matched up with location information and transmitted to the PSAP when ...

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