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SIP trunk providers emitting RTP packets containing wrong number of samples
by Liudy＠bukys.org April 19, 2022

April 19, 2022

My company (a SIP equipment manufacturer) has noticed a sudden flurry of problems related to RTP streams containing some packets with the wrong number of samples (different from what was negotiated). Our equipment negotiates 20ms packets, we're seeing the emission of a few 5ms packets with MARK bit set, before the 20ms packets start flowing. I theorized that some vendor's SBC or Media Gateway has released software that causes this. It has erupted at multiple customers. I thought there was no commonality of carrier or trunk provider, but today I heard a report that T-Mobile is definitely implicated and reproducible. Other sources are possible too. Has anyone else noticed this? Does anyone have a good contact for SIP-related matters at T-Mobile?

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Waiver request for fees for Reassigned Numbers Database
by calvin.ellison＠voxox.com April 5, 2022

April 5, 2022

More data for our Call Analytics/Anti-Robocall Filter: the Reassigned Numbers Database. In our case, we'd want to use this for real-time call analytics on every single ANI & DNIS that crosses our network, querying the database using to determine if a number should be in Aging status (disconnected within the last 45 days). I've asked our counsel how to "me too" this waiver. Although this waiver calls out the "pull versus push argument", we'd need the database on-premise in order to minimize post-dial-delay. Is anyone interested in filing a joint waiver? Calvin Ellison Systems Architect calvin.ellison at voxox.com +1 (213) 285-0555 <http://voxox.com> <https://www.facebook.com/VOXOX/> <https://www.instagram.com/voxoxofficial/> <https://www.linkedin.com/company/3573541/admin/> <https://twitter.com/Voxox> The information contained herein is confidential and privileged information or work product intended only for the individual or entity to whom it is addressed. Any unauthorized use, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately. ---------- Forwarded message --------- Date: Fri, Apr 1, 2022 at 7:17 PM Subject: waiver request for fees for reassigned number database To: Calvin Ellison <calvin.ellison at voxox.com> Hey Calvin, check this out: https://www.neca.org/docs/default-source/wwpdf/public/33122hustle.pdf

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Anyone else have billing problems with VZ?
by marylou＠backuptelecom.com April 4, 2022

April 4, 2022

I have a client that has been dealing with multiple unresolved billing disputes with Verizon for many years now. It has gotten to the point that attorneys and the court are involved. It would be helpful to know if other competitive carriers are experiencing similar issues with Verizon's bill dispute practices. If your company has filed a bill disputes with Verizon and you don't feel that it was handled in a timely and appropriate manner, please e-mail me privately. MARY LOU CAREY BackUP Telecom Consulting Office: 615-791-9969 Cell: 615-796-1111

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Vitelity Inbound SMS Outage March 27, 2022 0150 to 1720 UTC
by beckman＠angryox.com March 28, 2022

March 28, 2022

Vitelity hasn't posted anything about this, so I will for those that care. Short Version: Inbound SMS to all Vitelity DIDs failed between 0150 UTC and 1720 UTC on March 27, 2022 Long Version: At 0150 UTC our Inbound SMS Monitoring detected that one of our DIDs did not receive a sent SMS. This continued until 0230 UTC where our system automatically cut a ticket (via email) to Vitelity that we were seeing 30+ minutes of zero inbound SMS messages to a random sample of our DIDs. At 0305 UTC I opened an emergency ticket about the issue. At 0341 UTC The ticket was responded to. At 0503 UTC I was able to talk to someone at Vitelity who confirmed that they also had sent SMS messages to their inbound DIDs and the messages were not received, and they were escalating. During that, I also provided DLRs for all the sent messages, showing that they were received by Onvoy, Iristel, Neutral Tandem, etc. Vitelity confirmed that they were esclating and "sounding the alarm." At 0810 UTC Vitelity updated the ticket and said they were still escalating. No change, 100% of SMS messages sent to Vitelity DIDs failed to reach Vitelity or us. At 1634 UTC I re-re-re-escalated the issue to the Inteliquent NOC and my Vitelity contact. I was informed that a tech had found that "a certificate had expired" and was causing all inbound SMS delivery to fail. Incidentally, this ALSO prevented an emails to Vitelity Support to ALSO not be delivered to the portal, and thus not open tickets. At 1720 UTC a test finally succeeded and we received our first SMS in over 15h 30m. Several tests after that across another sample of Vitelity DIDs were successful. At no point was status.vitelity.com actually updated with any sort of incident, and despite it being acknowledged to me, has still not posted any sign of the outage. Why I'm Posting This is the 48th SMS outage since August 2015 that Vitelity has experienced, and in most cases, I have been the first person to alert them to a problem. They do not monitor inbound SMS, they just wait for a customer complaint, and even then, I've been told "nobody else has opened a ticket," as if multiple customers need to complain before they take an outage seriously. In this case, it took 2 hours from opening an emergency ticket for Vitelity to actually test inbound SMS and confirm an issue, followed by another 12 hours to actually find the root cause and fix it. Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com https://www.angryox.com/ ---------------------------------------------------------------------------

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ATAs with 90v Ring
by voiceops＠ics-il.net March 25, 2022

March 25, 2022

I'm looking for ATAs that produce a 90-volt ring. My Zhone only does 40v and my Grandstream only does 52v. It looks like the Cisco SPA122 used to, but it's EOS. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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Non-ITG Traceback Requests
by calvin.ellison＠voxox.com March 23, 2022

March 23, 2022

Has anyone received a traceback request from a party other than the ITG or a law enforcement agency? Is there any law or rule that requires a carrier to respond to a traceback request from the general public? A private individual has contacted us requesting a traceback based on our STIR/SHAKEN signature, but they are not a member of the ITG and do not have any accompanying legal device like a subpoena. They also do not appear to be a carrier, and I question whether this person's own carrier should be passing the Identity header to them at all. This person has been citing 47 U.S. Code ? 222(d)(2), claiming there is no restriction on who CPNI can be shared with, but I don't believe this gives them any standing to request a trackback without a legal device. We've engaged our own counsel about this, but I'm curious what other carriers have been experiencing. Calvin Ellison Systems Architect calvin.ellison at voxox.com +1 (213) 285-0555 <http://voxox.com> <https://www.facebook.com/VOXOX/> <https://www.instagram.com/voxoxofficial/> <https://www.linkedin.com/company/3573541/admin/> <https://twitter.com/Voxox> The information contained herein is confidential and privileged information or work product intended only for the individual or entity to whom it is addressed. Any unauthorized use, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately.

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Google Voice Contact?
by beckman＠angryox.com March 22, 2022

March 22, 2022

I'm tracking a GV number that was used a while back for fraudulent purposes with our service. The number came up again, and while I don't need to know the subscriber details, I do need to confirm with Google Voice that the number has been or has not been recycled and re-assigned during a certain time period. Any contacts at GV? Email me directly or post here. Thanks Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com https://www.angryox.com/ ---------------------------------------------------------------------------

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Mitel 3300 Issues
by voiceops＠ics-il.net March 16, 2022

March 16, 2022

A customer of mine has a Mitel 3300 PBX. We deliver to them analog lines. Everything worked fine for months, if not years. Then one day they say they can't receive inbound calls. They can still place outbound calls. They're on a Grandstream HT818 ATA. I move some lines to the Zhone ONT that's on-site. No improvement. I plug in a normal analog handset from Walmart or Menards. They all ring and answer just fine. I plugged in a patch cable from their Mitel ONS2 to the analog trunk 5 and they set up an extension on that ONS2 so that a call to it would trigger an inbound call on their analog line. Apparently that worked. The Mitel support agent is saying that we're not sending them between 24v - 48v. All cables are 6' at most. A) I don't see anywhere to configure voltage on either platform. B) I don't know how it could work and then just stop, other than equipment failure. C) I don't know how it would work just fine on a COTS phone, but not their Mitel. D) I don't know how the same problem could also afflict another ATA (build into the ONT). Any tips? ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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Test Numbers
by voiceops＠ics-il.net March 16, 2022

March 16, 2022

Our test equipment vendor (Exfo) has asked us about these capabilities, "milliwatt tone, quiet termination, or silent switchman." I don't know that I've seen the ability to configure those anywhere. How would I go about setting that up? I'm assuming that requires that my switch (Metaswitch) and endpoints (Zhone, Grandstream, Calix, Occam, and Innomedia) support them as well. I'm sure I can get platform-specific details from each of the vendors, but I'd like gain a bit of knowledge on that whole process before delving into vendor details. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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BackUP Telecom Consulting Contact
by ross＠tajvar.io March 16, 2022

March 16, 2022

Anyone know how to get in touch with Mary Lou Carey? I've sent her a few emails but haven't gotten a response.

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