[cisco-voip] [External] Re: Small business E911 solution

[Riley, Sean]

We have each floor or each single floor location on separate voice subnet and plan to assign a separate ELIN to each floor/location.  We are small enough that this is currently manageable, but would be much more difficult for a large campus environment.

From: Lelio Fulgenzi <lelio at uoguelph.ca>
Sent: Monday, December 13, 2021 5:58 PM
To: Riley, Sean <SRiley at robinsonbradshaw.com>; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] [External] Re: Small business E911 solution

Mobile access aside, how are you going to handle physical infrastructure? Right now, our switches have been deployed using “shortest path” methodology. This means, one switch stack could service one quadrant of a building and three separate floors. It would take years to document the ports. And they’d be out of date before you pushed the save button. Let’s not forget people can attach a 100ft patch cord and wire the other side of the building that the port doc says it services.

I guess we could start with building based location, which is better than nothing.

From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> On Behalf Of Riley, Sean
Sent: Monday, December 13, 2021 5:37 PM
To: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] [External] Re: Small business E911 solution

CAUTION: This email originated from outside of the University of Guelph. Do not click links or open attachments unless you recognize the sender and know the content is safe. If in doubt, forward suspicious emails to IThelp at uoguelph.ca<mailto:IThelp at uoguelph.ca>

We are going down the same road to find a solution to fit our environment, which seems similar to the original post.  We have physical phones in the office, sometimes in multiple offices with same DN and a home phone using MRA with the same DN.  Some Jabber softphone usage mixed in there as well in a VMware VDI environment.

Redsky want’s a separate ELIN for each MRA phone and Intrado says they can use CER or their gateway to track the MRA phones.  The VDI support is something they say they are working on, but no support at this time.

Sounds like we need to stand up CER at least with Intrado or plan to burn quite a few DID’s for ELIN use.

I do wish there was a better solution, but I have not come across one yet.  I will keep an eye on this thread.

From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> On Behalf Of Palmer, Brian via cisco-voip
Sent: Friday, December 10, 2021 12:30 PM
To: Adam Pawlowski <ajp26 at buffalo.edu<mailto:ajp26 at buffalo.edu>>; Matthew Huff <mhuff at ox.com<mailto:mhuff at ox.com>>; Johnson, Tim <johns10t at cmich.edu<mailto:johns10t at cmich.edu>>
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] [External] Re: Small business E911 solution

Intrado is the only one that I know of that has the ability to deal with just about every single solution.  The only one they can’t handle yet is the softphone within citrix which nobody else I know can deal with.  That solution comes in a few months.

The ERS service from Intrado is the cheaper of the two solutions.  There really isn’t anyway to accomplish what you want without $$$$.  The risk you have is that if it doesn’t route or is mis-routed you could possibly then have legal issues.

The biggest issues we had was softphones in virtual environment(citrix), non-did extensions, users that move around and need to dynamically change location on the fly etc.

Most of the vendors like redsky are just the front end as it seems like Intrado literally has a monopoly on the backend E911 service.




Brian Palmer
904-905-8263

From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> On Behalf Of Adam Pawlowski
Sent: Thursday, December 9, 2021 4:23 PM
To: Matthew Huff <mhuff at ox.com<mailto:mhuff at ox.com>>; Johnson, Tim <johns10t at cmich.edu<mailto:johns10t at cmich.edu>>
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] [External] Re: Small business E911 solution

If the devices are “remote” then I believe it is limited to the unique DID formed between the extension on the device and the e164mask with CER.  V911 solutions all seem to use call routing and can’t differentiate which thing originated the call in any way other than the calling number.  That’s where I am stuck being MRA only with Jabber. We’re also looking at 9Line, as they offer V911 and a UCM-direct approach for locations, but I believe in both cases it will still require some sort of unique DN, it just offers perhaps a better experience than the off-premise portal in CER for the customer to update their location as appropriate.

Best,

Adam

From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> On Behalf Of Matthew Huff
Sent: Thursday, December 9, 2021 2:25 PM
To: Johnson, Tim <johns10t at cmich.edu<mailto:johns10t at cmich.edu>>
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] [External] Re: Small business E911 solution

We have a SIP provider. The issue is that the user requires the same Prime DN no matter their location. We have a user, for example, at our NY office, he has a two different home offices in Massachusetts and one in Idaho. Our SIP provider in order to route E911 requires each phone to an unique DID, which our users will not accept.

What is the easiest solution with on-premise CUCM that allows me to satisfy E911 regulations, especially the ones that go into effect in January, without having to have everyone have an unique prime-dn at each location. Is Cisco Emergency Responder the only choice?

Matthew Huff | Director of Technical Operations | OTA Management LLC

Office: 914-460-4039
mhuff at ox.com<mailto:mhuff at ox.com> | www.ox.com<http://defang.bcbsfl.com/defang.php?url=https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.ox.com%2F&data=04%7C01%7Cajp26%40buffalo.edu%7C41ba0d36daec4cf57dab08d9bb4c1514%7C96464a8af8ed40b199e25f6b50a20250%7C0%7C0%7C637746757719785465%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=dNrDrBaJVgbiP0jpa06fU6b8U9z3y%2BUUwYJxtMTetPw%3D&reserved=0>
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From: Johnson, Tim <johns10t at cmich.edu<mailto:johns10t at cmich.edu>>
Sent: Thursday, December 9, 2021 2:20 PM
To: Matthew Huff <mhuff at ox.com<mailto:mhuff at ox.com>>
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [External] Re: [cisco-voip] Small business E911 solution

Maybe Intrado? Not sure their minimum requirements but I know we started with them when they were West, with only a couple hundred DIDs.

On Dec 9, 2021 2:16 PM, Matthew Huff <mhuff at ox.com<mailto:mhuff at ox.com>> wrote:
No, hosted solution isn’t an option as we have a number of custom solutions like ring downs, etc…

We already have CUCM and Expressway working fine, I just need directions on the simplest solution for E911 for MRA workers.

Matthew Huff | Director of Technical Operations | OTA Management LLC

Office: 914-460-4039
mhuff at ox.com<mailto:mhuff at ox.com> | www.ox.com<http://defang.bcbsfl.com/defang.php?url=https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.ox.com%2F&data=04%7C01%7Cajp26%40buffalo.edu%7C41ba0d36daec4cf57dab08d9bb4c1514%7C96464a8af8ed40b199e25f6b50a20250%7C0%7C0%7C637746757719795458%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=ZvkNyVJJsY%2FObyfGa%2FgTHBFALKEeW%2Fo%2FAmJQMpfAeFI%3D&reserved=0>
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From: Matthew Loraditch <MLoraditch at heliontechnologies.com<mailto:MLoraditch at heliontechnologies.com>>
Sent: Thursday, December 9, 2021 2:00 PM
To: Matthew Huff <mhuff at ox.com<mailto:mhuff at ox.com>>; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: RE: Small business E911 solution

I’m very curious if you find something. I’m not aware of anything cost effective at your size. RedSky’s minimum purchase for a CUCM based system is 12-14k.

Have you looked at moving to a hosted phone system? Almost every vendor I’m aware of includes E911 therein



Matthew Loraditch


Sr. Network Engineer

(He/Him/His)


p: 443.541.1518<tel:443.541.1518>



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From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> On Behalf Of Matthew Huff
Sent: Thursday, December 9, 2021 1:34 PM
To: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: [cisco-voip] Small business E911 solution

[EXTERNAL]

We are in the process of moving from legacy ISDN PRI for inbound/outbound dialing to SIP, and E911 has hit us in the face. We have less than 50 users, where > 90% currently are working from home. They have the same prime dn for both the office phone and their home phone. We have users that have phones in 3-4 locations including in multiple states. What is the simplest solution to setup and maintain that doesn’t require a user to have a separate DID in each location? Cisco Emergency Responder looks like major overkill.

Our environment is:
CUCM 14.x
Cisco Expressway 14.x for MRA
Cisco 8861 SIP phones (both at home and at work).

Matthew Huff | Director of Technical Operations | OTA Management LLC

Office: 914-460-4039
mhuff at ox.com<mailto:mhuff at ox.com> | www.ox.com<http://defang.bcbsfl.com/defang.php?url=https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.ox.com%2F&data=04%7C01%7Cajp26%40buffalo.edu%7C41ba0d36daec4cf57dab08d9bb4c1514%7C96464a8af8ed40b199e25f6b50a20250%7C0%7C0%7C637746757719835442%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=DqYjArtXgeelj%2FmLstyq2zYa4e6v4wAdnlqdvmKbqCc%3D&reserved=0>
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