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Today's Topics:
1. Re: Strange inbound Calls (R. Benjamin Kessler)
2. Re: Strange inbound Calls (Matthew Crocker)
----------------------------------------------------------------------
Message: 1
Date: Thu, 3 Oct 2013 14:11:28 +0000
From: "R. Benjamin Kessler" <[email protected]>
To: Brandon Lehmann <[email protected]>, "[email protected]"
<[email protected]>, Jay Hennigan <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [VoiceOps] Strange inbound Calls
Message-ID:
<0CFF54003CD92945994CF0C0F90D81B65E1E9665@EXCH1-FWA1.zenetra.local>
Content-Type: text/plain; charset="us-ascii"
+1 - we've been getting them as well for a couple of months. Maybe it's a
function of our outgoing message length but our VMs are all 10 seconds of "dead
air"
From: VoiceOps [mailto:[email protected]] On Behalf Of Brandon
Lehmann
Sent: Wednesday, October 02, 2013 10:32 PM
To: [email protected]; Jay Hennigan
Cc: [email protected]
Subject: Re: [VoiceOps] Strange inbound Calls
I'll have to dig into our logs a bit closer. We've been seeing a bunch of 1s
voicemails appear from random calling numbers to one of our TFs the last few
months. I attributed it to listing the # on our ARIN and RADB entries for our
ASN but haven't had time to find the correlation.
From: VoiceOps [mailto:[email protected]] On Behalf Of Nick Olsen
Sent: Wednesday, October 02, 2013 2:54 PM
To: Jay Hennigan
Cc: [email protected]<mailto:[email protected]>
Subject: Re: [VoiceOps] Strange inbound Calls
If the call is answered by a human, They hear nothing on the other side. I will
ask our receptionist to allow the call to continue for a minute or so and see
if it hangs up at the 60 second mark.
Timing our own IVR. It takes exactly 60 seconds, If you press nothing to get
all the way 1 second in to voicemail. As these calls always appear leaving 1
second voicemails.
Nick Olsen
Network Operations
(855) FLSPEED x106
[Image removed by sender.]
________________________________
From: "Jay Hennigan" <[email protected]<mailto:[email protected]>>
Sent: Wednesday, October 02, 2013 2:25 PM
To: [email protected]<mailto:[email protected]>
Subject: Re: [VoiceOps] Strange inbound Calls
On 10/2/13 10:13 AM, Nick Olsen wrote:
> Hello Everyone,
>
> We've been seeing a lot of strange inbound calls to our toll free
> numbers recently. The only thing they have in common is the caller ID
> text is always a city and a state. And the the call duration is 60
> seconds on the dot..Every time.
Are the calls answered by a human? If so, what do they hear? If not
and it's an IVR, if you call and say nothing does the call drop in 60
seconds?
City and state are not uncommon for CNAM. Many CNAM providers will put
the city and state of the rate center for the NPA-NXX if caller name
isn't available.
--
Jay Hennigan - CCIE #7880 - Network Engineering -
[email protected]<mailto:[email protected]>
Impulse Internet Service - http://www.impulse.net/
Your local telephone and internet company - 805 884-6323 - WB6RDV
_______________________________________________
VoiceOps mailing list
[email protected]<mailto:[email protected]>
https://puck.nether.net/mailman/listinfo/voiceops
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Message: 2
Date: Thu, 3 Oct 2013 10:43:58 -0400
From: Matthew Crocker <[email protected]>
To: Brandon Lehmann <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [VoiceOps] Strange inbound Calls
Message-ID: <[email protected]>
Content-Type: text/plain; charset="windows-1252"
Automated system trying to probe for auto-attendant and/or voicemail holes?
--
Matthew S. Crocker
President
Crocker Communications, Inc.
PO BOX 710
Greenfield, MA 01302-0710
E: [email protected]
P: (413) 746-2760
F: (413) 746-3704
W: http://www.crocker.com
On Oct 2, 2013, at 10:31 PM, Brandon Lehmann <[email protected]> wrote:
> I?ll have to dig into our logs a bit closer. We?ve been seeing a bunch of 1s
> voicemails appear from random calling numbers to one of our TFs the last few
> months. I attributed it to listing the # on our ARIN and RADB entries for our
> ASN but haven?t had time to find the correlation.
>
>
>
> From: VoiceOps [mailto:[email protected]] On Behalf Of Nick Olsen
> Sent: Wednesday, October 02, 2013 2:54 PM
> To: Jay Hennigan
> Cc: [email protected]
> Subject: Re: [VoiceOps] Strange inbound Calls
>
> If the call is answered by a human, They hear nothing on the other side. I
> will ask our receptionist to allow the call to continue for a minute or so
> and see if it hangs up at the 60 second mark.
>
> Timing our own IVR. It takes exactly 60 seconds, If you press nothing to get
> all the way 1 second in to voicemail. As these calls always appear leaving 1
> second voicemails.
>
> Nick Olsen
> Network Operations
> (855) FLSPEED x106
>
> <image001.jpg>
>
>
> From: "Jay Hennigan" <[email protected]>
> Sent: Wednesday, October 02, 2013 2:25 PM
> To: [email protected]
> Subject: Re: [VoiceOps] Strange inbound Calls
>
> On 10/2/13 10:13 AM, Nick Olsen wrote:
> > Hello Everyone,
> >
> > We've been seeing a lot of strange inbound calls to our toll free
> > numbers recently. The only thing they have in common is the caller ID
> > text is always a city and a state. And the the call duration is 60
> > seconds on the dot..Every time.
>
> Are the calls answered by a human? If so, what do they hear? If not
> and it's an IVR, if you call and say nothing does the call drop in 60
> seconds?
>
> City and state are not uncommon for CNAM. Many CNAM providers will put
> the city and state of the rate center for the NPA-NXX if caller name
> isn't available.
>
> --
> Jay Hennigan - CCIE #7880 - Network Engineering - [email protected]
> Impulse Internet Service - http://www.impulse.net/
> Your local telephone and internet company - 805 884-6323 - WB6RDV
> _______________________________________________
> VoiceOps mailing list
> [email protected]
> https://puck.nether.net/mailman/listinfo/voiceops
>
> _______________________________________________
> VoiceOps mailing list
> [email protected]
> https://puck.nether.net/mailman/listinfo/voiceops
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End of VoiceOps Digest, Vol 52, Issue 5
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