If you have an LRN in the ILEC tandem provider's area, you can port to/from any rate center in that ILEC area. If there are small ILECs that use the big ILEC's tandem, you can also port to/from those rate centers. However, if you have more than 24 DS0s worth of traffic to that small ILEC area, the small ILEC can force you to install a direct connection to them. That doesn't happen very often but I've seen it happen a few times. If you're using a third party provider like Inteliquent, you need to have an LRN in every LATA that you want to port numbers in/out of. Your traffic can traverse their network between LATAs through your one connection with them, but in the background Inteliquent has to have connections with each tandem provider in both areas in order for it to work. That's why they give you a list of all the rate centers that they cover when you sign up with them! Mary Lou Carey BackUP Telecom Consulting Office: 615-771-7868 (temporary) Cell: 615-796-1111 On 2018-08-28 06:00 PM, Mike Hammett wrote:
Meaning if I thought were true? I had just assumed that Inteliquent did have the connections to every tandem in the LATAs they serve, given that (my thought) that you could only port numbers on the same tandem, so universal coverage would require connections to every tandem. We're actually looking at someone like Inteliquent to expand our footprint.
So I'm supposed to be connected to every tandem in my LATA? In my LATA, there are only two (I believe), but some LATAs (like Chicago) have several. I'm supposed to drag a DS1 (or use Inteliquent, etc. if available) to connect to each one, even if I don't provide service in the rate centers traditionally served by that tandem? It seems like Comcast threw a dart at a dart board in choosing which tandem to connect to vs. going with the one that everyone else in that town uses.
So then I could port a number from any rate center in my LATA (say Savanna) and point it to my LRN, living off of a tandem switch that the Savanna ILEC isn't connected to (from my outside world perspective)? Is there even the LATA constraint? Given the porting limitations I had experienced in the VoIP world, I assumed it was a tandem-by-tandem basis.
So the LERG shows which tandem I need to send traffic to if I want to talk to them, but they could send their outbound calls to a different tandem? My current customer complaint is for calls that we're sending to Comcast, apparently homed off of the other tandem.
If everyone is supposed to be on every tandem, then why can't the tandem I'm on just accept the calls I'm sending to Comcast, since Comcast should be there? Obviously me not being on the other tandem would affect inbound traffic to me.
Is there another service I should be paying Frontier for to get me to the other tandem with some value-add service? I know CenturyLink hops through almost every town going that way (former LightCore and others before route). Frontier or CenturyLink may be able to get me a DS1 to the other tandem if I need that.
I'm aware that I could still be completely missing the mark.
BTW: Thanks for TelcoData. I subscribed a long time ago, but haven't for many ages.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com
Midwest Internet Exchange http://www.midwest-ix.com
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FROM: "Paul Timmins" <ptimmins at clearrate.com> TO: "Mike Hammett" <voiceops at ics-il.net> CC: voiceops at voiceops.org SENT: Tuesday, August 28, 2018 5:19:11 PM SUBJECT: Re: [VoiceOps] LNP, tandems, etc.
If that were true, you wouldn't be able to use inteliquent (et al) as your access tandem. Everyone is supposed to be directly or indirectly connected to every tandem in the LATA (which you can't independently verify, as telcodata and the LERG both show terminating tandem information to reach that end office, not what tandems the end office is hooked to to terminate calls.
On Aug 28, 2018 17:47, Mike Hammett <voiceops at ics-il.net> wrote:
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=9...
LRN NPA-NXX in town B: https://www.telcodata.us/search-area-code-exchange-detail?npa=815&exchange=9...
Tandem 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 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops