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Great questions :).
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<div>So since we can override on a per device basis, you'll notice that I didn't put an actual address, I put ($Address). This is an important distinction.</div>
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<div>Suppose we could sense a users physical position (IE via GPS on their SIP-enabled smartphone). We could then insert the lat-long and approximate address instead of transmitting the HQ address. In practice, most users will set their office devices to default
to the HQ Emergency info, but on their home devices, they can set a different address (typically tied to their direct DID instead of the main number).</div>
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<div>I don't believe you can send an address in real-time to a 911 service (if I'm wrong I'd be thrilled to learn of one). It's always a db lookup, which sort of negates the idea I proposed in my previous paragraph. In short, 911 is complex, antiquated and
difficult. Even though we could EASILY provide live lat-long and address information to e911 the infrastructure isn't setup to support it and I think we're in agreement on this point.</div>
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<div>BTW, It's also not kludgey if I know the difference between a direct dial and a main number (which I'd wager most people do since it's printed on most business cards).</div>
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<div>Cheers,</div>
<div>Joshua</div>
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Joshua Goldbard</div>
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VP of Marketing, 2600hz</div>
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116 Natoma Street, Floor 2</div>
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San Francisco, CA, 94104</div>
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415.886.7923 | <a href="mailto:j@2600hz.com">j@2600hz.com</a></div>
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<div>On Jan 18, 2013, at 2:13 PM, Nathan Anderson <<a href="mailto:nathana@fsr.com">nathana@fsr.com</a>></div>
<div> wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">Kinda/sorta. So you are doing (in essence) what I proposed in my last paragraph: transmitting a different CLID to the PSAP than you transmit to all other called parties for that station.<br>
<br>
The thing is that this doesn't seem to solve the original poster's problem. In your example, the station in question has a DID: 415-886-7923, and it (presumably) uses that DID for all external outbound calls, but uses the main switchboard number as the CLID
when dialing emergency services (911). That works great if all of the stations are at the same address as what is provisioned in E911 for the switchboard number. If that station isn't at that address, I take it your solution is to "override" this so that
the emergency CLID matches the external CLID, and then to provision that DID in E911 with the right address.<br>
<br>
The way I understood it, though, the original question dealt with a scenario like this:<br>
<br>
My internal Caller ID is: 330 (THE MARKETING GUY)<br>
My external Caller ID is: 415.886.7900 (no DID! You call the switchboard and ask for 330.)<br>
My emergency Caller ID is: 415.886.7900<br>
<br>
...so the company in question -- for whatever reason, I presume they have a good one and it's not my position to ask or judge -- does not hand out DIDs to stations and wants all outbound calls to look like they are coming from HQ regardless, and station 330
is physically at MARKETING GUY's residence (since he telecommutes), not company HQ.<br>
<br>
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:<br>
<br>
My internal Caller ID is: 330 (THE MARKETING GUY)<br>
My external Caller ID is: 415.886.7900 (no DID! You call the switchboard and ask for 330.)<br>
My emergency Caller ID is: 415.886.7923 ("throwaway" number)<br>
<br>
...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.)<br>
<br>
This is all predicated on the notion that the only way that most E911 services work is by binding an address to a telephone number in a database on their end. Are there any E911 providers that you can transmit an address to in the call signalling, in real-time
during call set-up? That would solve the problem entirely.<br>
<br>
--<br>
Nathan Anderson<br>
First Step Internet, LLC<br>
<a href="mailto:nathana@fsr.com">nathana@fsr.com</a><br>
<br>
-----Original Message-----<br>
From: Joshua Goldbard [mailto:j@2600hz.com] <br>
Sent: Friday, January 18, 2013 1:47 PM<br>
To: Nathan Anderson<br>
Cc: voiceops@voiceops.org<br>
Subject: Re: [VoiceOps] 911 address policy for company phones at home<br>
<br>
Nathan, <br>
<br>
CLID as it applies to the PSTN is inherently outbound. That being said, a number of switches (PBXs) have the capability of modifying the caller ID of a user. You see this with internal Caller IDs and external caller ID (extension versus CNAM). Some providers
(2600hz included) have introduced a third caller ID classification: emergency.<br>
<br>
Let me give you a practical example.<br>
<br>
My Internal Caller ID is: 7923 (THE MARKETING GUY)<br>
My external Caller ID is: 415.886.7923 2600hz<br>
My emergency Caller ID is: 415.886.7900 2600hz ($Address)<br>
<br>
The purpose here is to take our block of 100 DIDs and only support emergency services in a single uniform fashion. We can override this on a user by user or per-device basis, but the point is to simplify emergency calling.<br>
<br>
Does that help clarify what we're doing?<br>
<br>
Cheers,<br>
Joshua<br>
<br>
P.S. I previously sent this email only to Nathan. Adding voiceops onto the chain just in case there's interest.<br>
<br>
Joshua Goldbard<br>
VP of Marketing, 2600hz<br>
<br>
116 Natoma Street, Floor 2<br>
San Francisco, CA, 94104<br>
415.886.7923 | j@2600hz.com<br>
<br>
<br>
On Jan 18, 2013, at 1:04 PM, Nathan Anderson <nathana@fsr.com><br>
wrote:<br>
<br>
<br>
<span class="Apple-tab-span" style="white-space:pre"></span>I'm confused, and I apologize to those who have already been involved in this discussion thread for a while since I am just now jumping in. CLID is inherently outbound, so I am not sure what you mean
by "inbound vs. outbound caller IDs". Perhaps by "inbound CLID" you mean DID, or DNIS?<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>I'm also not sure how you propose to bind E911 details to a device instead of a telephone number. The few E911 services I've looked at all only give you the option to provision E911 information via
TN. So if you propose a set-up such as what is being discussed here, where each company phone only has an internal extension # and no DID, and CLID is uniformly set to a single number for all outbound calls from any phone whether it is located in the office
building or at an employee's residence, then there can only be a single E911 address for all of those phones. That seems inescapable. Are you saying that there are E911 companies that can provision differently, and not use the CLID as the "key" to looking
up an address? What do they use/how do they work, and can you name some names?<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>The only other kludgey workaround I can think of that might pass muster would be to assign unique "throwaway" TNs to each individual extension that you would use as the CLID for outbound from that
extension *only* when 911 is dialed, and continue to use the global office TN as CLID across all extensions for all other outbound calls. It's not a perfect solution, since if the individuals using those phones have no clue about those numbers, they might
get confused when asked to verify their own telephone number by the PSAP and the dispatcher reads some number back to them that isn't their main office number. At that point, you might as well let the customer know that these numbers exist and give them the
option of using them as DIDs for the extensions/devices they've been assigned to.<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>--<br>
<span class="Apple-tab-span" style="white-space:pre"></span>Nathan Anderson<br>
<span class="Apple-tab-span" style="white-space:pre"></span>First Step Internet, LLC<br>
<span class="Apple-tab-span" style="white-space:pre"></span>nathana@fsr.com<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>-----Original Message-----<br>
<span class="Apple-tab-span" style="white-space:pre"></span>From: voiceops-bounces@voiceops.org [mailto:voiceops-bounces@voiceops.org] On Behalf Of Carlos Alvarez<br>
<span class="Apple-tab-span" style="white-space:pre"></span>Sent: Friday, January 18, 2013 11:49 AM<br>
<span class="Apple-tab-span" style="white-space:pre"></span>To: Joshua Goldbard<br>
<span class="Apple-tab-span" style="white-space:pre"></span>Cc: voiceops@voiceops.org<br>
<span class="Apple-tab-span" style="white-space:pre"></span>Subject: Re: [VoiceOps] 911 address policy for company phones at home<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>On Fri, Jan 18, 2013 at 12:46 PM, Joshua Goldbard <j@2600hz.com> wrote:<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>Yeah, but you're talking about inbound.<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>In many corporate environments, the outbound caller ID is uniform for a location (and even if it's not, most systems support uniform caller ID for emergencies). E911 is an outbound service and the
inbound and outbound caller IDs can certainly be different.<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>Does that help clarify my viewpoint?<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>Ah, yes. We very rarely get anyone who wants to do that, so it didn't cross my mind.<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>We do have special 911 CLID/DID settings and special processing for those calls. However we bind them to a device, since the device is what has location, in most of our installations.<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>-- <br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>Carlos Alvarez<br>
<span class="Apple-tab-span" style="white-space:pre"></span>TelEvolve<br>
<span class="Apple-tab-span" style="white-space:pre"></span>602-889-3003<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
<span class="Apple-tab-span" style="white-space:pre"></span>_______________________________________________<br>
<span class="Apple-tab-span" style="white-space:pre"></span>VoiceOps mailing list<br>
<span class="Apple-tab-span" style="white-space:pre"></span>VoiceOps@voiceops.org<br>
<span class="Apple-tab-span" style="white-space:pre"></span>https://puck.nether.net/mailman/listinfo/voiceops<br>
<span class="Apple-tab-span" style="white-space:pre"></span><br>
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</blockquote>
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