[cisco-voip] 911 Sanity Check

[Voll, Scott]

We put a 2801 at each remote location with a single Pots line.  It is
only used for e911 or SRST Dial tone.  That way if someone at the remote
site needs 911 it goes to the correct 911 dispatch center.  The other
option is CER but I don't know if that will work in your multi rate
centers.

 

CER with the PS-ALI / PSAP service "Could" possibly take care of the
issue and do as your asking.

 

My question back is what happens if you lose connectivity to the remote
locations, what do they do for phone service?

 

Scott

 

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of TechGuy
Sent: Wednesday, July 11, 2007 2:27 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] 911 Sanity Check

 

I am having the worst time dealing with our telco SP and 911, because of
this I have to reach out to others and find out if I am simply asking
for too much or if there is a major deficiency on the part of our telco
provider. 

 

Here is the basic issue / scenario I am dealing with.

 

Business with about 10 different offices spread out in 10 different
locations / rate centers.

 

Four PRI's all coming into one data center, and using CallManager to
manage gateway and phones.  This isn't really a technical issue related
to callmanager as much as its an issue with the PRI's and 911

 

The PRI's have 600 DID's all in one range and tied to the telco rate
center in which the data center is located.

 

Obviously the data center and the offices are not the same and like I
said in many different rate centers.

 

So I have employees with a number that does not accurately represent the
location they are in.  For arguments sake and in an effort to paint a
clearer picture here, lets say the data center is in Dallas and the DID
range is say 972-453-1000 thru 1599 

 

And say I have an employee at an office in Houston, but his number is
one falling into the range above.

 

Where this becomes an issue obviously is with 911.  I thought there
would or should be a way through e911 or something to provide a list of
numbers and the office they should be tied to.  Say I have setup a group
of 100 numbers from my above range to belong to my Houston office.  It
would seem that there would or should be a way to have that group of
numbers setup to reflect the correct address and route to the correct
911 center. 

 

Maybe I am sadly mistaken here and this is not something that can be
done or can but not by all service providers or something?

 

My other option obviously is to place a local gateway at each office and
get a local pots line tied to it and setup callmanager to route 911
calls through this gateway for the phones in that particular office. I
know I can do this, but it really takes away from the whole voip cost
savings by increasing my need for new hardware. 

 

So, who can help me understand this?  Is this a limitation of the my
telco service provider if they are saying they can't do this and that I
have to have numbers on the PRI tied to each rate center?  Because thats
where I am right now, telco is telling me I have to get numbers or DID's
for each rate center and use those for each of my offices.  Which to me
would just be a major admin nightmare.  I would have very inconsistent
ext. ranges and such all over the place. 

 

Love to hear some thoughts.  Tell me I am crazy and expecting too much,
missing some obvious point, I can take it.  :-)  I just need to know
good or bad what the deal is.

 

Appreciate all your time and thanks for any responses in advance.

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