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LNP Waiver List
by voiceops＠ics-il.net Jan. 7, 2020

Jan. 7, 2020

A colleague of mine was asking some porting related questions and then presented this to me after I reminded them that at one point, some LECs had LNP waivers: https://numberportability.com/documents/1584/03162011_all_lnp_waiver_matrix… Anyone know of a more recent, similar document? It looks like the vanity DID they're looking for belongs to a LEC that at least at one point had a valid LNP waiver in place. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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STIR/SHAKEN Discussion: Will it help?
by beckman＠angryox.com Jan. 2, 2020

Jan. 2, 2020

A few months ago I attended an FCC STIR/SHAKEN discussion in Washington DC. They didn't get deep into the technical details but there were a bunch of big carrier representatives there. If you haven't followed STIR/SHAKEN, it's really just an additional SIP header that contains cryptographically-signed information about the origin point of the call. You can verify the signature with publically published public keys so you know whomever signed it is really them. Here's a few resources if you want to learn more: https://www.bandwidth.com/glossary/stir-shaken/ https://www.fcc.gov/call-authentication https://en.wikipedia.org/wiki/STIR/SHAKEN https://www.home.neustar/stir-shaken-resource-hub There are three levels to tell you how much you should trust the origin of the call: 1. Full -- The call came from the originating carrier's customer and is authorized to use the number 2. Partial -- The call came from the originating carrier's customer but may or may not be authorized to use the number 3. Gateway -- The carrier has authenticated from where it received the call, but cannot authenticate the call source (e.g., International Gateway call). As an example, as will be many legit cases, a Verizon Wireless mobile customer will place a call, which will route to Verizon, who will sign the call using STIR/SHAKEN with Full Attestation and we can all "trust" the call. But now we throw in VoIP. I'm a small customer, Initech, of a larger carrier, Hooli. I don't sign my calls, so I hand my calls to my larger carrier, Hooli. Hooli sees the call from me (their customer) with a valid CallerID I'm authorized to use and so Hooli signs the call with STIR/SHAKEN with Full Attestation. Turns out the call was a robocall. What changes? The only thing that changes is that the receiving party, say Soylent Corp, knows that Hooli originated the call. Soylent is not Hooli's customer, so how does Soylent complain to Hooli about the content of the call? And as carriers, we are not legally responsible for the content of our customer's calls. How will Soylent accept 90% of Hooli's Fully Attested valid traffic but avoid the 10% that is spam/robocalls that are ALSO Fully Attested? How exactly does STIR/SHAKEN help fix the robocall and spam call problem? Yes, I could block all of Hooli's calls where the attestation is Partial or Gateway, but you run the risk of false positives, especially in the International category, or just when Hooli isn't sure, like when I rent a DID from Acme but do termination through Hooli -- Hooli doesn't know that I am authorized to use that DID from Acme, even though I am, so Hooli has to mark my call as Partial or Gateway. I'm all for reducing annoying spam and robocalls, but I'm still not yet convinced that STIR/SHAKEN is going to materially reduce them. Let's discuss! Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com http://www.angryox.com/ ---------------------------------------------------------------------------

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Odd Routing to Iowa
by voiceops＠ics-il.net Dec. 31, 2019

Dec. 31, 2019

Is anyone else seeing odd routing when calling Goldfield Telecom in Iowa? Yes, I'm almost positive no one here has had that need. Today when I call from Sprint, I get a guy that just keeps saying, "Hello". When I call with T-Mobile, I get through to the desired conference brdige. When I call with US Cellular, I get a lady's voicemail. I'm using the Google Fi service to call out from. I just tried via Pac-West\Impact Telecom and it wouldn't go through. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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Microsoft Voice exams
by ryan＠finnesey.com Dec. 23, 2019

Dec. 23, 2019

This may be a bit OT but I am looking for a few people that might have an interest in taking a few Microsoft Voice exams around Skye for Business. My firm would cover the cost of the exam and study guides. Exam 70-334: Core Solutions of Skype for Business 2015 Exam 70-333: Enterprise Voice Skype for Business 2015 Thanks Cheers Ryan

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Visible Wireless security contact
by ross＠tajvar.io Dec. 20, 2019

Dec. 20, 2019

I'm looking to get in touch with someone on the Visible Wireless security team. If you have a contact please shoot me their info. Thanks, Ross

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API for Intl CLI in spam lists
by dovid＠telecurve.com Dec. 17, 2019

Dec. 17, 2019

Hi, Does anyone know of an API that will give accurate results to see if a calling number is spam? The ones available on twillio seem to be geared to US phone numbers. When we try numbers that are set listed as spam in true caller they show clean on all the API's that twillio offers. Does anyone know of any other API's that offer something more accurate like TrueCaller? TIA. Dovid

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MVNO
by clecny＠gmail.com Dec. 16, 2019

Dec. 16, 2019

I apologize in advance if anyone finds this off topic. We are NY based CLEC and exploring to become MVNO(possibly nationwide) . Where do I start? Anyone with good contact with ATT/VZ/TMO wholesale/MVNO division? We do not need standard billing, branding and network management offerings. Just cheapest way re-sale mobile services. Thanks Jay.

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SIP Credential Strength / Domestic Fraud
by dave＠socket.net Dec. 13, 2019

Dec. 13, 2019

All, We recently saw fraudulent calls via compromised SIP credentials to Killduff, IA. Any thoughts on why? I?m also interested in what everyone is doing today regarding enforcing and auditing strength of SIP credentials. In our experience compromised devices leaking credentials are more of a threat than weak passwords but we?re on Broadworks and running secureTlktWeakPasswordsTool currently. Thanks, Dave Sill IT Director, Socket Telecom <https://www.socket.net/> 573-817-0000 ext 211

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Ring Central NOC contact?
by caalvarez＠gmail.com Dec. 2, 2019

Dec. 2, 2019

We have a customer who needs to communicate with a Ring Central customer, but none of our carriers or even aggregators can reach this particular number. Bandwidth, Intelliquent, and a number of others all fail. This seems to be a problem on RC's end, but I have no idea how to reach them. The terminating number is 7195424485, for a business in Pueblo, CO. The number worked fine from us until the customer moved to RC.

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QUALITY routes to Mexico and LATAM
by dovid＠telecurve.com Nov. 17, 2019

Nov. 17, 2019

Hi, I apologize in advance if this is not allowed. Lately we have been having issues with the quality of our calls to Mexico and LATAM. We are looking for carriers that are direct, complete calls with CLO and have *high quality*. If you are able to offer can you please email me off list? TIA. Regards, Dovid

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