[VoiceOps] False 911 calls and old abandoned DID

Mary Lou Carey marylou at backuptelecom.com
Fri Jan 22 12:43:43 EST 2021

I would think that the ALI database would still need to have the address 
associated with that phone number in order for the police to call. I'd 
check the ALI database to make sure the number has been removed if its 
no longer in service. Otherwise you could be getting fined big time for 
invalid ALI information.

BackUP Telecom Consulting
Office: 615-791-9969
Cell: 615-796-1111

On 2021-01-21 02:22 PM, Brandon Svec wrote:
> That sounds unbelievable. Do you really have evidence that a damaged
> cable somehow pulse dialed 911? I think the issue is something
> upstream like what data the PSAP is getting has been spoofed or is
> just inadvertently incorrect, for example.
> Brandon Svec
>> On Jan 21, 2021, at 12:08 PM, Dan Mostert <dan at delhitel.com> wrote:
>> We’ve run into similar circumstances before with ported in
>> numbers.  The losing carrier, either on purpose under the idea of
>> “left in place dial-tone”, or laziness, leaves a copper PSTN
>> line configured as the customer still.  They also don’t maintain
>> their aging copper, so particularly when the cable is wet, short
>> outs and ends up pulse-dialling 911 for them.  Same deal- police
>> response for an unresponsive / hang up 911, and a confused/annoyed
>> customer.  In our case, the PSAPs involved see this so much from the
>> losing carrier every time it rains, we just educate everyone
>> involved, and the PSAP / public safety have to deal with it.  I’m
>> interested in anyone else’s suggestions too.
>> Dan
>> From: VoiceOps <voiceops-bounces at voiceops.org> On Behalf Of Carlos
>> Alvarez
>> Sent: Thursday, January 21, 2021 3:01 PM
>> To: voiceops at voiceops.org
>> Subject: [VoiceOps] False 911 calls and old abandoned DID
>> We have a customer who has received two calls from the police
>> because "they" called 911, but they did not.  The CLID shown is NOT
>> one of theirs, but they think it might have been theirs many years
>> ago.  The CNAM on that number is their company name.  Nobody answers
>> the number, and it's with Qwest.  Our logs show no calls to 911 from
>> them.
>> Any advice on this?  It's just two calls at this point, just this
>> week.  They've been our customer for over five years, and this
>> number has never been on our system.
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