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Multiple Tandems Per LATA
by voiceops＠ics-il.net June 15, 2021

June 15, 2021

When your service area is taken care of by one tandem in the LATA, do you connect to the other tandems in your LATA? Currently I just send anything that's not on my single tandem (or my direct connections) to my interLATA termination. How common is that? It's pricey to build out to the other tandem. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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LERG Access
by voiceops＠ics-il.net June 15, 2021

June 15, 2021

Those of you that have LERG access, what do you have? I've ran this network for a few years without it. I'm assuming I'm missing something I should have. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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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

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USF is 33.4% for 2Q2021
by beckman＠angryox.com June 14, 2021

June 14, 2021

Um. Wow. This is crazy. Why is it 33.4%??? 2 years ago it was 18.8%. This is DOUBLE! Will it stop increasing? Go back down? Are we doomed? Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com http://www.angryox.com/ ---------------------------------------------------------------------------

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"Timeout" on VoIP call traversing Verizon data
by mwiles＠akabis.com June 11, 2021

June 11, 2021

If there?s a Verizon cellular data guru monitoring here, I?d love to get your insight! Otherwise, let me toss this out to the group for thoughts and opinions please? We?re a Metaswitch shop, and use their MaX UC mobile softphone client (iPhone/Android). We had a customer using the MaX UC client on a long call? they were using Verizon cellular data (confirmed by IP address). At thirty (30) minutes into the call, the call ?dropped?. The call was re-established, and again, after thirty minutes, the call dropped. We?re pretty sure the user was in a static position (non-mobile)? and logically assume they were on the same cell tower for both calls that dropped (the Verizon IP was the same). Looking at Metaswitch SAS (their diagnostics tool), at the thirty minute mark, we send out a re-INVITE message to the softphone client? and we receive no reply? so after ten seconds, we breakdown the call assuming they?re gone. Then about eight seconds later, we see an INVITE message from the softphone?s same IP address (with the same Call ID)? however, it?s coming from a different port. So to be clear, the original call setup and connection was using 1.2.3.4:6789? then eight seconds after we ended the call with a BYE (assuming they were gone due to lack of reply), we get an INVITE (with the same Call ID) from 1.2.3.4:9876. Metaswitch looked at the diags from the softphone (we downloaded them), and they?re confirming that the softphone never received our re-INVITE at the 30 minute mark. Metaswitch also looked at the bug/crash logs on the softphone, and confirmed neither was the case. It almost sounds like a NAT thing going on? but I?m pretty ignorant when it comes to cellular data. It looks to me as if the Verizon side simply changed port numbers, and assumed we?d know maybe via mental telepathy? ? Has anyone had experience with such an occurrence? or any thoughts? Thank you! Mark

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SHA Lookup
by voiceops＠ics-il.net June 4, 2021

June 4, 2021

When I have a call routing issue, I look up what the LRN is of the number I'm sending to. I then look up that NPA-NXX in telcodata.us to find who the incumbent is in that rate center. I then look up what the tandem information is for that incumbent switch. Then I know whether it is the tandem I'm connected to in that LATA or the other tandem. Telcodata.us doesn't always have that information. What's the path of least resistance to getting that data? ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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Can't Port from a Particular Rate Center
by voiceops＠ics-il.net June 4, 2021

June 4, 2021

Assuming the number isn't held by someone exempt from porting, what would prevent someone from being able to port a number from a particular rate center in a LATA they have coverage in? We picked up a particular carrier for our out-of-area needs and the first thing we throw at them in a LATA we know they have coverage in, they can't do. They have a non-useful reason why. When I started at this company, I made sure to port a bunch of numbers from all over our LATA to see what would happen. All successful. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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CSR BTN
by voiceops＠ics-il.net June 4, 2021

June 4, 2021

Does a CSR have to have the specific number being ported or just any number on the account? We're testing a third party network that we'll utilize in the short-term for out-of-area usage. We ported some of our own numbers to our account at the third party. The CSRs arrived with the main BTN on the account, not the number being ported. Our porting person rejected the CSRs because they weren't for the number being ported. Of course she knew what number was being attempted because it was an internal operation, but normally she wouldn't. It's my thought that the CSR is a customer information verification process. We wouldn't know the number actually being ported until the LSR came. Does the name, address, account number, TN, etc. match an account you have? If so, great. Where can I find a good resource on the process and what's normally acceptable for rejections? Of course I said, "Let me verify this before we do anything" and then she replied to the CSRs rejecting. *sigh* I guess we'll really be testing all scenarios. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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STIR/SHAKEN - Robocall Mitigation Plan
by marylou＠backuptelecom.com May 30, 2021

May 30, 2021

I've had several people ask some great questions about the Robocall Mitigation plan since I sent out my last e-mail so I just wanted to clarify who needs to file a Robocall Mitigation plan by June 30, 2021. All companies that sell or resell voice services of any type (VOIP, TDM, Wireless) OR any company that has an end user customer they provide DIDs to are considered telecom carriers. It does NOT matter if you use upstream providers or not. It does not matter if you use another carrier's certificate or not! If you provide DIDs to a paying customer for any reason you are considered a telecom carrier so you need to file a Robocall Mitigation Plan. For those of you who aren't familiar with me, you may be wondering why I bother to post about this. I've been a Telecom Carrier Consultant for the last 21 years and have helped over a hundred carriers (CLECs, ILECs, Paging, Satellite, and Wireless) install and maintain their facilities based networks. The reason I post information about this is not because I don't have enough work to do. It is because over the years I have seen certain parties we won't mention do anything and everything they can to put the small carriers out of business and I don't want anyone to be taken out because they didn't realize they needed to do something to comply. I am a firm believer that no company can be everything to everyone so there is a place in the world for all carriers that provide good services. I've had people coming to me from the beginning asking for help getting their STIR/SHAKEN certificate so I'm very familiar with the process and what the upstream carriers are telling their underlying carriers. I'm also very familiar with the many changes that have been made to the requirements for getting a certificate. It's been confusing for everyone involved and especially the mitigation plan because that started out as an alternative to getting a certificate but it's turned into something that is required of every carrier. So regardless of whether you've already turned up STIR/SHAKEN or you're using someone else's certificate.......make sure you file your Robocall Mitigation Plan. I am not the only consultant helping people get their paperwork done so they can qualify for a certificate, so there's no obligation to use my services. All I'm saying is that whether you do it on your own or you hire someone to help you, make sure you file your Robocall Mitigation plan by June 30th. For those of you who are already STIR/SHAKEN compliant, it just means you sign in and mark your company as compliant! MARY LOU CAREY BackUP Telecom Consulting Office: 615-791-9969 Cell: 615-796-1111

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LRN and valid values
by beckman＠angryox.com May 26, 2021

May 26, 2021

Carrier A provided us a US NPANXX Rate Deck that had some values in it that were not valid, such as 732040. When asked about it, they claim that Access Tandem Codes are valid LRN values for operator services calls. Carrier B provides an API for us to query to get the LRN for a termination number, so we can rate it properly and implement our own LCR. Carrier B says LRNs will always be valid NPANXX values, and 732040 and similar would never be returned. I don't have access to the LERG, and frankly, even if I did, I'm not sure where I'd look to see who wins the conflict. Any suggestions? Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com http://www.angryox.com/ ---------------------------------------------------------------------------

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