telecomatt

As far as 911 CLID. 911 will only see the number assigned to circuit by the pstn. Does not matter what the pbx sends out.

Why? because imagine having 1000 did's everyone which sends out their did # on outbound calls. The 911 system would have to have a number/address lookup for each one. So much more efficient using the BTN

reggggg

Thanks man

jack

That's not exactly true, at least not here in Illinois.

The PSAP actually uses the PS/ALI locator -- fancy service sold by AT&T that allows you access to a database that you define the loccation of every DID at your business in -- to break down to a specific number to a specific location. Any Bus. with more than 40k sq. feet must subscribe to this and break down by floor and at a minimum quadrant location of phone.

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papa-bear

Jack, does that have to do with the e-911 so you can identify buildings (possibly floors) on a campus with multiple buildings?

That is something I will be looking into in the next year as we have 7 out buildings off the same switch / PRI cluster so right now when we call they get the id for the main site only. Has caused some problems in the past when people have hung up and they have dispatched someone to check it out. Our poor security group are at a loss to tell them where the call came from.

jack

Yep, E-911.

You really may also want to look at ESA for your enviornment as it could show the security folks where the call came from.

Not to mention people who hang up on a 911 operator should be beaten with sticks.

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telecomatt

Thats very interesting Jack. Here in NYC you arent given a choice lol.

ESA is a good feature to turn on. It can notify an Attendant Console as well as print up automatically on a terminal

WhereWolf

First off: Check the state (or local) laws concerning the requirement for E911 and 911 location identification - some areas require you to subscribe to a PS/ALI update service so every DID delivered to a PSAP has a location in the National Database for 911 - other area's have no such requirement, in which case you would send (or your carrier on your behalf) the Billing DN with has just 1 address in the system.

Also - if you have, or can procure, a fancy buffer box for call accounting like an Omnitronix (company is called something else now), and it has more than one port, you can possibly use the second port to monitor (if ESA is active in your switch) for the OSN messages, and provide SMTP or SMNP alerts to those on site folks that require it. I have mine setup to send an email with the same data contained in the OSN message that gets logged in the HIST, the message gets sent to a email server which then relays in text message to all of our campus security cell phones - when the PSAP calls back, the security group already knows where the call originated (even hangups), and can contact the originator directly to verify the status.
If anyone needs more info on how to set this up, I would be happy to discuss it further offline...

Wherewolf

Fletch

That is absolutely not the case. The 911 system does have this. It is called an ALI database. It all comes down to if the telco will honor your CLID as ANI on an E911 call. SOme do, some don't and won't unless you buy a service refered to as PS-ALI.
There is a new site that just came online at http://pbx-e911.com that has quite a bit bit of information being added each week for many PBX manufacturers.

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