Thanks Mike for the comments.

 

When Using CAMA trunks, you have a direct interface from Your PBX to the
PSALI database, so the PBX passes data to PSALI and they get the direct
dispatch information.  In recent years, that was changed from dedicated CAMA
trunks to trunks that you designate within your PRI to facilitate E911.
If we replace a PRI with that service, they will still want that data passed
to the PSALI database.  That is what I am trying to figure out.  It might be
accomplished with some aftermarket product, I'm just starting to dig into it
now to see.  With E911 in our state, they are required to provide this
critical location information for campus environments like schools, etc.

 

From: Picher, Michael [mailto:[email protected]] 
Sent: Wednesday, February 10, 2010 11:49 PM
To: Todd Hodgen; [email protected]
Subject: RE: [sipx-users] Enhanced 911

 

Todd,

 

Data on who is where is provided by your phone CO to the 911 dispatch.

 

That being said, the hitch is then how to coordinate your information with
your phone company.

 

Currently, as far as I can tell, you'd have to provide a DID to each phone
and make sure that each phone can send out that DID.  That DID would then
need to be tied in the 911 database somehow to an address and room number.

 

Then you'll have the joy of making sure that the phone doesn't move.

 

Even if you have something fancier that is 'automagic' it is tied to the
Ethernet port of the network switch. The customer needs to be extremely
diligent about what is plugged in where. The onus needs to be put on the
customer to maintain that level of detail and assume that liability of
possibly supplying bad information in the case of an emergency.  

 

Usually when I start explaining this to the customer they realize that they
don't want to go to that level of managing ports in their system and are
fine with just reporting the address and having the PBX make sure the
appropriate parties are notified as to what extension dialed 911.
Personally, I'd rather provide some of the right information than provide
bad information.

 

Mike

 

From: [email protected]
[mailto:[email protected]] On Behalf Of Todd Hodgen
Sent: Wednesday, February 10, 2010 6:35 PM
To: [email protected]
Subject: [sipx-users] Enhanced 911

 

Has anyone done any playing around with Enhanced 911 outside of providing a
local trunk for each building?  For example, in a school environment, you
want to report the exact building and possibly classroom that the call comes
from.  I'm curious if we can override the outbound caller ID with some
unique identifier to provide this type of information?  Seems not likely,
but I'd love to hear if anyone has played around with that field and 911
before.

 

Any thoughts?

 

 

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