[VoiceOps] AT&T / Onvoy / Vonage call routing screwup after LNP

Nathan Anderson nathana at fsr.com
Mon Dec 5 11:38:34 EST 2016

Just to update everybody, I have been advised by a Vonage engineer that there is in fact a common peering partner between them and AT&T that does not route on LRN (whether using ENUM/DNS or not he didn't say).  He was kind enough to open a ticket with them on our behalf to have the TNs in question removed from their switch, which they have since done.  We are now waiting for propagation.  I will retest later this afternoon, at which point I fully expect that we will be in business.

I do not have inside knowledge as to whether Onvoy appropriately notified Vonage of the port-out, but I was also informed that in the case of this particular carrier, even if proper notification was done, this carrier receives a bulk updated TN list from Vonage only on a weekly basis.  Outside of that, tickets need to be raised.  So it is entirely possible that unless one raises a flag, even if everybody else in the chain does everything by the book when executing the port, calls can still be misrouted for up to a week.  Grr.

-- Nathan

From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Andrew Paolucci
Sent: Monday, December 05, 2016 8:30 AM
To: Oren Yehezkely
Cc: voiceops at voiceops.org
Subject: Re: [VoiceOps] AT&T / Onvoy / Vonage call routing screwup after LNP

Sounds like a possible ENUM routing issue if it's bypassing the PSTN. Was Vonage notified of the port away by Onvoy?

Andrew Paolucci

Sent with ProtonMail<https://protonmail.com> Secure Email.

-------- Original Message --------
Subject: Re: [VoiceOps] AT&T / Onvoy / Vonage call routing screwup after LNP
Local Time: 5 December 2016 9:16 AM
UTC Time: 5 December 2016 14:16
From: orenyny at gmail.com<mailto:orenyny at gmail.com>
To: voiceops at voiceops.org<mailto:voiceops at voiceops.org> <VoiceOps at voiceops.org<mailto:VoiceOps at voiceops.org>>

Had similar experiences, but with different vendor.
I would try to open a ticket with ATT to fix their routing. I know, it won't be easy.
I would also try to speak with Vonage. I wouldn't have the customer disconnect before calls are flowing correctly.
If this doesn't work, and you wait another day or two with no results, I may try to port the numbers away from convoy.

Interested to know how you solved it...
Good luck.

On Dec 5, 2016 8:06 AM, "Nathan Anderson" <nathana at fsr.com<mailto:nathana at fsr.com>> wrote:
So here's a weird one: we took over a small business account from Vonage.  Vonage was using Onvoy for origination, and we elected to keep the TNs with Onvoy (through a wholesaler).  So the "port" only consisted of Onvoy repointing traffic for those TNs internally away from Vonage and to our reseller, with no LRN change.

The weird bit is that we definitely are seeing some traffic for those numbers hitting us, but it's been nearly 72 hours now and some calls are still ringing their Vonage ATAs.  I couldn't tell you definitively where the delineation is, but I can tell you, for example, that if I call any of the TNs from my AT&T cell, those calls still hit Vonage, so I can at least reproduce the problem at-will.  This is for a local real-estate office, and AT&T is big in our relatively rural market, so even if it turns out that AT&T is the only provider that is affected, that is still a huge percentage of our end-user's client base.  And the frustrating bit is that traffic is now effectively being "forked", which is a huge inconvenience for our end-user since they have an old key system with analog trunks and so we have to choose between having our IAD hooked up to their KSU or having their stack of Vonage ATAs hooked up.  (For now, we have left the Vonage ATAs in place, and we are forwarding calls tha
 t come to us to a single line from the ILEC that this office ended up keeping.  I don't know what we would have done if they didn't have that line.)

Onvoy swears up and down that everything is configured correctly on their side, and given that we are at least getting *some* calls, I am inclined to believe them.  When I give them call examples from my cell phone, they say that they don't even see those calls hitting their systems at all.  At this point, the running theory is that AT&T must have some kind of direct peering with Vonage, and Onvoy isn't in the loop at all on those calls.  If that's the case, then perhaps everything magically works itself out once I have the end-user call up Vonage and have them close out the account completely.  But I'm not sure it is worth the risk of having them take that step with things as they are, on the off-chance that I guessed wrong (instead of the problem getting fixed, calls from AT&T start going to /dev/null).

Has anybody encountered anything like this before, or heard of national wireless carriers doing direct peering with national VoIP providers while completely bypassing PSTN switching infrastructure?  Are there any AT&T, Onvoy, and/or Vonage reps reading this who can help un-**** this cluster?


Nathan Anderson
First Step Internet, LLC
nathana at fsr.com<mailto:nathana at fsr.com>

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