EMC Study Guide

Another concern when dealing with 911 calls is that some local legislation requires that more detailed location information be sent than just the street address. These laws normally apply to buildings that are over a certain size. Typically the floor and room number is required in addition to the street address. This requirement is referred to as an E911 or enhanced 911. Imagine that someone dialed 911 from a 20-story building and all that was sent is the street address. This would make it difficult to determine which floor, let alone which office, it came from. The solution is to have a database that contains the detailed address information for each phone number in your company. This database is typically maintained by an outside company and is accessible by the emergency service. Another issue that arises with CallManager is that because a phone can be moved so easily, the information in the database can become outdated rather quickly. In addition to this, a feature known as extension mobility makes the CallManager system even more nomadic. To deal with these issues, Cisco offers a product known as Emergency Responder. This product is used to ensure that the correct detailed information is sent when a 911 call is placed. For more details on this product, refer to the “Cisco Emergency Responder Administration Guide” that can be found on Cisco.com.

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