[cisco-voip] Configure 3845 router for 911 calls.

Fri Jul 28 09:40:17 EDT 2017

Hi Dave,

The document you have provided is great for SIP Gateway config. I am just wondering if there is any document for MGCP Gateway as well?

Thanks

________________________________
From: cisco-voip <cisco-voip-bounces at puck.nether.net> on behalf of Dave Goodwin <dave.goodwin at december.net>
Sent: Thursday, July 27, 2017 9:24 PM
To: Scott Voll
Cc: cisco-voip voyp list
Subject: Re: [cisco-voip] Configure 3845 router for 911 calls.

There are several ways to accomplish this on the UCM side. I would consider creating a RG for Site A GW and a RG for Site B GW, have one 911 route pattern accessible via the main CSS that is routed to a RL with Standard Local Route Group. Then use the Device Pool configurations for Site A and Site B to assign the Local Route Group. In any case, all of the UCM configurations are valid and meet the stated goals.

What I think the OP is asking for is help configuring the actual IOS GW with FXO ports to route the calls. Hamu, configuration options for an IOS voice gateway are quite extensive. Everyone has their opinion on which of the available options are "best," and I'm not going to try to convince you which approach (H.323, MGCP, SIP protocols) is best. I would say you might consider calling Cisco TAC and asking for help with this very basic initial configuration of a voice gateway... but I doubt you'll get help on your 3845 since that model's end of support date has passed. Instead, I'll just give you a link I saw from a simple Google search that will get you started down one of those roads (SIP). Hopefully this will give you what you need to modify it for your specific scenario and get it working. Good luck! http://ucpros.net/cisco-sip-gateway-configuration/

Cisco SIP Gateway configuration: The Ultimate Guide - UCPros<http://ucpros.net/cisco-sip-gateway-configuration/>
ucpros.net
SIP is Cisco's recommended protocol for Voice Gateway & CUCM interconnection. This is the most comprehensive guide for Cisco SIP Gateway configuration.

On Thu, Jul 27, 2017 at 6:29 PM, Scott Voll <svoll.voip at gmail.com<mailto:svoll.voip at gmail.com>> wrote:
I agree with Neal,

but I would use one partition for each site for 911, then a third partition for everything else, then, put the correct 911 partition in the site CSS and use the third partition in both CSS.  Save a lot of time recreating RP for the other stuff.... Guess it depends on how many RP you have..... we have hundreds.

Scott

On Thu, Jul 27, 2017 at 3:13 PM, Haas, Neal <nhaas at co.fresno.ca.us<mailto:nhaas at co.fresno.ca.us>> wrote:
Everything is done in the CUCM.

Pots are configured with MGCP.

Create New Partition. (site Name)
Assign 911 Route for site A to Site Partition 1
Assign 911 Route for Site B to Site Partition 1
Assign all other Routes to both Partitions.

Only 911 calls are treated different per site – if you do not take phones between sites, you won’t have a problem. Two POTS lines per site is correct.

I don’t think I missed anything, it’s not hard to accomplish the separate 911 calls between PSAPS.

Neal

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>] On Behalf Of Hamu Ebiso
Sent: Thursday, July 27, 2017 2:40 PM
To: Norton, Mike <mikenorton at pwsd76.ab.ca<mailto:mikenorton at pwsd76.ab.ca>>;
Subject: Re: [cisco-voip] Configure 3845 router for 911 calls.

Let me rephrase the questions with more understanding update after I talk to Mike and few other people.

We have 2 locations. one is main building were everything reside and the second  building is remote building shared with someone else.

About 50 people reside at  the secondary remote location. This people use main locations CUCM over the WAN for calling. Remote location is about 25 minutes from main building.

So if these people at remote location call 911, emergency responder will see main building location not remote location where the call is residing.

Therefore we are tasked to put together plan to give users option to be able to call 911 and show their true locations.

We are forced to find spare 3845 router to configure for this users for 911 call. below is what we have.

ordered 2 POT Lines,

have 3845 router

We have both FOX and FXS modules for POT Lines.

Amphenol Cable to connect to FOX and 110 block.

CUCM version: 11.0

The reason we ordered 2 POT lines instead of circuit is because they are cheap. Circuit cost about $500 a month while POT line cost about $40 a line. Since this router is only used for 911 call we don't want to spend that much money.

The question, has any one configured router for 911 and have basic config that I can use for my config. Since I haven't done voice gateway configuration before, I just need help with this.

Any help is greatly appreciated.

Thanks

Hamu

________________________________
From: Norton, Mike <mikenorton at pwsd76.ab.ca<mailto:mikenorton at pwsd76.ab.ca>>
Sent: Monday, July 24, 2017 3:58 PM
To: Hamu Ebiso
Subject: RE: Configure 3845 router for 911 call.

For the IP phones to be usable during WAN outage, you need something they can register to. E.g. SRST or CME on the router, or else a CUCM server on-site.

The config you posted shows that this router already has T1 lines. You can send 911 calls to T1 lines, I don’t understand why you want to add analog POTS lines if you already have T1s.

If you want more suggestions then perhaps take this conversation back on to the mailing list, others besides me might be able to give you ideas.

-mn

From: Hamu Ebiso [mailto:hebiso2010 at hotmail.com]
Sent: July 24, 2017 2:45 PM
To: Norton, Mike <mikenorton at pwsd76.ab.ca<mailto:mikenorton at pwsd76.ab.ca>>
Subject: Re: Configure 3845 router for 911 call.

Thank you Mike for following up!!

I Just clarified with person who gave me that project to put it together. That person was not really familiar with voice staff just mentioned analog phones. There is no analog phones here.  These users have 7942 IP phones and the idea was to user POT lines to call out to 911 if WAN connect down at the site. The idea was, since these users are in some else's building, we need to find out how to make them call out to 911 if WAN connection is down. Since I am not 100% sure of how we can achieve this. I am ok with your suggestion how to achieve this.

ordered 2 POT Lines,

have 3845 router

We have both FOX and FXS modules

Amphenol Cable.

thanks

Hamu

________________________________

From: Norton, Mike <mikenorton at pwsd76.ab.ca<mailto:mikenorton at pwsd76.ab.ca>>
Sent: Monday, July 24, 2017 3:26 PM
To: Hamu Ebiso
Subject: RE: Configure 3845 router for 911 call.

Hi Hamu, I don’t fully understand your call flow. POTS lines would normally connect to an FXO card. In that case, the easiest way to handle incoming calls is to do “connection plar xxxx” on the voice-port, where xxxx is the extension number where you want to send the calls. But since you mention analog phones then it is not clear to me exactly what you are trying to do.

Maybe take the conversation back to the mail list and give more explanation of the call flow, might be able to get more help that way.

-mn

From: Hamu Ebiso [mailto:hebiso2010 at hotmail.com]
Sent: July 21, 2017 5:49 PM
To: Norton, Mike <mikenorton at pwsd76.ab.ca<mailto:mikenorton at pwsd76.ab.ca>>
Subject: Re: Configure 3845 router for 911 call.

Thank you very much Mike. I really appreciate your help.

As I mentioned it before, These employees are residing in someone else's building and using CUCM across WAN. The reason behind trying to use POT Lines is, If WAN is done these employee will be able to use POT Lines from Analog phones to call out.

One question is, if you can share command to setting how to send 911 calls to reception or security desk.

I really appreciate your input and advise.

Thanks

Hamu

________________________________

From: Norton, Mike <mikenorton at pwsd76.ab.ca<mailto:mikenorton at pwsd76.ab.ca>>
Sent: Friday, July 21, 2017 5:43 PM
To: Hamu Ebiso; cisco-voip voyp list
Subject: RE: Configure 3845 router for 911 call.

Currently your config will send the 911 calls out the “Local” T1. Once you have the POTS lines added, you will need to put your POTS ports into their own trunk group and direct your outgoing dial-peers to the new trunk group instead of “Local.”

You should do something with inbound calls that come in on the POTS lines. E.g. if 911 calls you back, at bare minimum you should send the call to reception or security desk.

For POTS lines you need an FXO card, not an FXS card. FXO is for connecting to telco Offices, FXS is for connecting to analog telephone Sets. So FXS will not do what you need.

You don’t have any SRST configured. Is your CUCM on-site? If CUCM is across the WAN then you need to have something on-site that phones can register to when the WAN is down (e.g. SRST, CME).

I don’t understand why you need the POTS lines? Why not send 911 calls out one of the T1s that this router already has?

-mn

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Hamu Ebiso
Sent: July 20, 2017 1:03 PM
To: cisco-voip voyp list <cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>>
Subject: [cisco-voip] Configure 3845 router for 911 call.

Hi Everyone,

I need help with this configuration for 911 only.

back ground history, our company bought another company few years back. After about 6 months, the deal fail apart. Within that 6 months employees moved around to different building mixed. When separation started, leaders negotiated so that we still provide professional service to the company that is separating from us for 3 years. In that 2 years, all the assets and employees need to be separated. There are about 50 employee of ours located in the building of the company that is in the process of separating from us.  We are in the process of separated them from this company system but in the same building. We had done all separation form phones to email server and etc. while in the process of separating this employee we have run into issue with 911 if the site loose WAN connection. I was tasked to figure out this. I am just wondering if anyone has done this and help me.

below is the router I am try to configure.

3845 with EVM-HD-8FXS/DID module

ordered Amphenol cable to connect to 110 block

ordered 2 POT Lines

I need help configuring this router for 911 call. I have attached the config I have and I am just wondering if I am missing anything. I haven't don't this kind of configuration before and I need guidance.

Thank you very much!!

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