April 2021 - VoiceOps - lists.voiceops.org

Verizon Wireless Contact
by cwhelan＠staff.gwi.net Jan. 21, 2022

Jan. 21, 2022

Hello everyone, I know this is a long shot, but I'm hoping someone on here works for Verizon Wireless or knows someone that is in a position to assist us. Recently, a change to call routing occurred and Verizon Wireless calls are now being delivered across our tandem instead of a SIP peer. Ideally, I would like to establish a SIP trunk to Verizon Wireless but changing the call flow is the short term goal. Thanks in advance for your help! Christopher Whelan Director of Network Engineering GWI office 207-602-1115 *cell* 207-751-5013 www.gwi.net

2 1

ANIs flagged as telemarketer/spammer/scammer
by abalashov＠evaristesys.com Nov. 14, 2021

Nov. 14, 2021

Hi, So, of course, it is a known problem in the legitimate side of the lead engagement call centre, survey, etc. business that ANIs get flagged as "telemarketer" pretty quickly and start showing up that way on people's phones. Your normative viewpoint on that may vary depending on what you think of lead gen calls, but regardless, a reasonable person would differentiate between: (1) Legitimate outbound dialing operations that are following up with leads who provided their phone number and agreed to be called (at least, as a matter of clicking "accept" on _something_), or for some other legitimate mass-dialing purpose, and who actually own the DID inventory from which they present local-market ANIs and can in fact be reached on those numbers; (2) Illegal spammers who use fake ANIs and call people who did not in any way consent to being called by them. I am trying to learn a bit more about how this is done and what a legitimate, above-board business can do about it. Ignoring the factor of third-party call-screening apps (which most people with a mobile don't use), where is this generally implemented? As I understand it, T-Mobile do it on the network level. I have T-Mobile myself, and probably 2/3rds of unfamiliar numbers, including quite legitimate ones, show up as "Scam Likely" ? I know that's come up on the list before. AT&T displays "Telemarketer"; do they do it that way too, or do they use a Google Android feature for that which they enable as part of their carrier defaults for carrier-issued phones? What about other carriers and Android? As far as I know, Apple don't do anything like this. Do people with iPhones just not receive this "service"? How does that work? Asking where the central, or the most influential authority lies and who provides it goes to the heart of the real question, which is: what can a legitimate business do if their number has been blacklisted this way? As I understand it, the maintainers of these lists, along with the criteria for getting on them, are elusive and inscrutable, and there's really no recourse and no appeals process. I furthermore understand that this has led to the widespread approach of rotating ANIs, but that's a losing battle; they get flagged too. I imagine it won't be long before the criteria for "Scam Likely" are just "number appears to call lots of numbers in this rate centre and otherwise hasn't been around very long". But this is all just conjecture on my part; I really don't know much about how my carrier, anyone's carrier, or some BigCo that's behind my mobile OS decides that a call is a "telemarketer" or "scam" call. If anyone can shed some light on how this really works and what, if anything can be done about it, I would be most appreciative. -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

8 14

Connecting to Remote Tandems
by voiceops＠ics-il.net July 9, 2021

July 9, 2021

I'm evaluating methods of extending our footprint. I purposely left out company names. One of the companies we talked to was really only interested in getting us the inbound long distance calls, not the local ones. Well, they would, but the terms were vastly different. Given that I still need to build out to connect to the local tandem, what's the point in using a third party to connect to long distance? Are the terms for connecting to the local tandems different because the access tandem is simpler, whereas the local tandem could potentially involve connections to a bunch of other switches, once volume dictated I needed direct connections... and they don't want to deal with that? Are there third parties that don't have vastly different terms for local tandem services? Also, is it likely that I just don't understand what's going on? I went circles with the sales rep to make sure I understood what he was saying, but I could be wrong. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

5 24

Programs to analyze CDRs
by marylou＠backuptelecom.com June 14, 2021

June 14, 2021

I have a client looking for recommendations on software programs to analyze their CDRs. They need one that will determine the percent of traffic by type: Local IntraLATA/IntraState, IntraLATA/Interstate, InterLATA/Interstate Any information on programs and what you like / dislike about them would be helpful! MARY LOU CAREY BackUP Telecom Consulting Office: 615-791-9969 Cell: 615-796-1111

2 1

Malformed Caller ID
by voiceops＠ics-il.net April 22, 2021

April 22, 2021

Have any of you noticed an increase in customer complaints of malformed caller ID? We do a test call out as the customer, whether it's to one of our cell phones or one of the incumbent's POTS lines. Everything shows up as expected. The number is formatted correctly. The Caller ID name is formatted correctly. However, we're getting customer complaints that the caller ID is saying Japan (we have nothing to do with Japan), United States, blank, or some other combination. We're just not able to confirm that. Of course customers are reluctant to tell us what the numbers are of the remote parties having these issues, so we can't really look for common denominators. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

4 4

Reputation Score Aggregator
by ciscoplumber＠gmail.com April 21, 2021

April 21, 2021

Does anyone know of a company that allows you to search the reputation of an ANI across the various robocall mitigation companies and/or carriers? For example instead of querying TNS, Neustar, Hiya, etc individually which may not be possible without having their service, is there a company that allows you to check the ANI against a variety of providers in one place? Right now if a customer reports a mislabeled spam call we need to determine the terminating carrier and work with them. This issue could also be happening on multiple carriers (or robocall mitigation companies) and it would be nice to see them all in one place. Thanks

1 0

Phase III clinical trials of Kamailio DMQ
by abalashov＠evaristesys.com April 1, 2021

April 1, 2021

For immediate release: GAINESVILLE, Florida (1 April 2021)--Evariste Systems, in partnership with Posner | Palner Pharmaceuticals, are pleased to announce the eagerly anticipated start of Phase III clinical trials of Kamailio DMQ module replication. In this stage of the investigation of the promising replication scheme, which was developed in record time, DMQ will be tested in a rigourous, double-blind, controlled CI/CD process for large-scale efficacy and continually monitored for safety in shorter and longer terms. The now-concluded second phase established basic safety and Phase 2b entailed a dose-finding study for the optimal number of batched `dmq_usrloc` contacts per kilogram of cloud computing resource. The main cohort of the main sequence of the Phase III trial will enroll 380 randomly selected, statistically representative Floridian SIP registrars and 5700 SIP dialogs, also in the state of Florida. When asked about the disparity in the number of registrars versus dialogs, Alex Balashov of Evariste said, "It is reflective of the small number of SIP registrars in Florida; not to be indelicate, but consider the median age of the population." As previously remarked upon in proceedings of the World SIP Organisation (WSO), the choice of Florida as a venue attracted some questions. We asked Fred Posner of Posner | Palner about the clinical background informing this choice of replication study cohort: "Florida is a good place to find eventual consistency failures; the open climate and reluctance to accept traditional data integrity science would have sealed the deal, but when people started to drink bleach here, I saw an opportunity." Evariste and Posner | Palner are aiming for a US Food & Drug Administration EUA (Emergency Use Authorisation) for DMQ replication as a prophylactic data redundancy and failover measure to ward off the development of moderate to severe viral Sonus Haemorrhagic Fever symptoms. Phase II studies have painted a promising a picture of the DMQ architecture's ability to reduce moderate to severe symptoms and associated 28-day mortality by more than 90%, albeit over a small sample size and in enterprise patients with known pre-existing comorbidities such as Session Border Controller and BroadSoft Multi-System Inflammatory Syndrome. Phase III trials seek to bolster quantums of broader efficacy, including efficacy for localised outbreaks of small to medium business softswitch. Of the control group, Balashov said, "They will receive a standard pipe-to-/dev/null placebo protocol, but with identical '200 OK' confirmation messages. We proudly developed this approach in early 2020 in consultation with the highest levels of the Trump presidential administration; it is called TENP, or 'The Emperor's New Potion.' It is a successor to that administration's previous approved placebo protocol, SHTI - Small Hands, Tremendous Initiatives." Despite speculative autism and packet fragmentation claims by Florida Governor Ron DeSantis, Balashov was quick to provide reassurance about side effects from DMQ in the Phase III trial. "The incidence of severe allergies to plain-text UDP was within standard deviation over the mean for all insecure replication, and there's support for other transports on the way. Anyway, we have a robust adverse effects reporting system in our issue tracker and solid surveillance. Don't let partisan politics dissuade you from allowing request lines with the KDMQ method." Other industry sources have reported that DMQ is not the only replication investigation undertaken by Evariste and Posner | Palner, although it is the only prophylactic suitable for the early infection development and inflammatory phases of a broad class of SBC-complex syndromes typically afflicting service providers. A recent IETF preprint by the same authors has shown high-quality preliminary data suggesting statistically significant improvement in morbidity outcomes from Perimeta and Nokia via a later-stage therapeutic intervention with a monoclonal, monorepo Github cocktail administered intravenously. -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

6 9