[VoiceOps] Strange inbound Calls

[R. Benjamin Kessler]

+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:voiceops-bounces at voiceops.org] On Behalf Of Brandon Lehmann
Sent: Wednesday, October 02, 2013 10:32 PM
To: nick at flhsi.com; Jay Hennigan
Cc: voiceops at voiceops.org
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:voiceops-bounces at voiceops.org] On Behalf Of Nick Olsen
Sent: Wednesday, October 02, 2013 2:54 PM
To: Jay Hennigan
Cc: voiceops at voiceops.org<mailto:voiceops at voiceops.org>
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" <jay at west.net<mailto:jay at west.net>>
Sent: Wednesday, October 02, 2013 2:25 PM
To: voiceops at voiceops.org<mailto:voiceops at voiceops.org>
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 - jay at impulse.net<mailto:jay at impulse.net>
Impulse Internet Service - http://www.impulse.net/
Your local telephone and internet company - 805 884-6323 - WB6RDV
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