You as the originating carrier need to either connect to Comcast's local tandem serving that DeKalb lrn or pay someone to get it there. I reach Comcast through inteliquent usually, that would be my suggestion but you have to do what makes sense to you.
And on an earlier reference yeah if you connect to AT&Ts local network in Chicago you end up connected to something like 15 tandems in the Chicago LATA (ridiculous since most of them seem barely used). My switch LRN there is actually homed on Inteliquent for FGD so AT&T local reaches me through all those local tandems, and everyone else (including AT&T long distance) uses inteliquent to reach me.
Aug 28, 2018 21:14, Mike Hammett <[email protected]> wrote:
I drew a picture, hoping it would clear things up a bit.
Through my switch, we're trying to call a number in a block assigned to Sycamore, with an LRN in a DeKalb number block, but the common tandem operator is telling me that the LRN actually lives on a different tandem.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
Midwest Internet Exchange
http://www.midwest-ix.comFrom: "Mike Hammett" <[email protected]>
To: [email protected]
Sent: Tuesday, August 28, 2018 4:46:52 PM
Subject: [VoiceOps] LNP, tandems, etc.I thought you had to be on the same tandem to port a number, but with what our tandem operator (Frontier) is telling me, this isn't the case.
Comcast ported a number from us in town A. The LRN they pointed to is based in town B (per TelcoData). The tandem generally used by carriers in both towns is based in town B. Naturally, we send traffic to that tandem.
The operator of that tandem is telling us that the LRN is actually homed off of a different tandem in our LATA (operated by CenturyLink) in town C. Unfortunately, I can't corroborate this information with TelcoData the only rate center I see off of that tandem in TelcoData is an AT&T town next door.
Where can I read up authoritatively on the porting requirements that would apply to this and related bits of info I should know?
I'm checking on our LERG access as I know that has the authoritative information, but I don't have that access at the moment. Maybe we're not subscribed to it.
Number NPA-NXX in town A: https://www.telcodata.us/search-area-code-exchange-detail?npa=815&exchange=991LRN NPA-NXX in town B: https://www.telcodata.us/search-area-code-exchange-detail?npa=815&exchange=901Tandem in town B: https://www.telcodata.us/search-switches-by-tandem-clli?cllicode=DKLBILXA50T
Tandem in town C: https://www.telcodata.us/search-switches-by-tandem-clli?cllicode=DIXNILXA50T
Thanks.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
Midwest Internet Exchange
http://www.midwest-ix.com
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