[VoiceOps] Conferencing NPAs
ujjval at simplesignal.com
Wed Dec 9 13:14:02 EST 2009
Level 3 just told me that we need to start blocking these NPA-NXX's...and that they have a lot of trouble with them..no specific explaination.
VP Voice Engineering
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From: Scott Berkman [mailto:scott at sberkman.net]
Sent: Wednesday, December 09, 2009 11:12 AM
To: 'Alex Balashov'
Cc: Ujjval Karihaloo; voiceops at voiceops.org
Subject: RE: [VoiceOps] Conferencing NPAs
I don't have that level of knowledge of their network, but I can easily
believe they'd only have tandem trunking in some of these rural places.
From: Alex Balashov [mailto:abalashov at evaristesys.com]
Sent: Tuesday, December 08, 2009 7:03 PM
To: Scott Berkman
Cc: 'Ujjval Karihaloo'; voiceops at voiceops.org
Subject: Re: [VoiceOps] Conferencing NPAs
Scott Berkman wrote:
> Yes, number of Tandem trunks and/or PRIs.
> Remember that Level 3's voice service was born out of their managed
> modem service. As the modem business (especially that of their really
> wholesale customers) started declining, that capacity was converted to (or
> shared with) IP media gateways. Therefore areas that didn't have a large
> capacity in the modem world didn't have a large capacity for calls.
Yes, that I know, but my understanding was that this applies to
origination. That is why they have direct end-office trunks to nearly
How does the termination architecture work? I would assume it's like
any other large CLEC and/or IXC: by default, they connect to a POI
and have tandem groups from there, and also ride their own network to
select end-offices in which colocate equipment for the purpose of
generating UNEs, when/if there is switching equipment there.
Alex Balashov - Principal
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Direct : (+1) (678) 954-0671
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