On 1/18/13 2:13 PM, Nathan Anderson wrote:
So, the question is, how do you transmit the correct address to the dispatcher for MARKETING GUY's residence in this scenario, instead of company HQ's address? My proposed solution was this:
My internal Caller ID is: 330 (THE MARKETING GUY) My external Caller ID is: 415.886.7900 (no DID! You call the switchboard and ask for 330.) My emergency Caller ID is: 415.886.7923 ("throwaway" number)
...then you provision the dude's residential address on the 7923 number. But MARKETING GUY has no clue that this number exists, and in fact dialing that number will not lead you to his station, thus the "throwaway" label. (In addition to confusing MARKETING GUY when PSAP asks him if he is calling from 7923, if the call drops and PSAP tries to get hold of him again, that will fail. Another reason why this kludgey solution is not great.)
And, in the real world, if MARKETING GUY's house isn't in a San Francisco suburb but in Kansas, what will the PSAP there do when you present it with an ANI of 415.886.7923? Will the 316 NPA selective router even process the call? And if it does correctly route to the Wichita PSAP and the dispatcher sees a 415 NPA on a fixed address (not cellular) call, what will they think is going on? Alternatively, does the VoIP carrier need to get a single local DID in an area far removed from his service area (and deal with some remote state's regulatory and tax administrivia and expense) just to have something that 9-1-1 can handle? Keep in mind that the number has to be dialable so that the PSAP can call back. -- Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV