If you use a Private Branch Exchange (PBX) telephone system, the 9-1-1 dispatcher may see only your corporate or billing address, not the location information of the emergency. There are steps you can take to provide location-specific information. It is your responsibility to input and maintain the 9-1-1 phone station information. Unless you take steps to provide and update accurate number and location data in California’s 9-1-1 database, the location information provided to the 9-1-1 operator may not be the location from which the call is actually placed.
The following link provided by the California Public Utilities Commission provides more information: