[VoiceOps] Conferencing NPAs

[Ujjval Karihaloo]

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.

Ujjval Karihaloo
VP Voice Engineering
IP Phone: +13032428610
E-Fax: +17202391690

SimpleSignal Inc.
88 Inverness Circle East
Suite K105
Englewood, CO  80112



-----Original Message-----
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.

	-Scott

-----Original Message-----
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
large
> 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 
everywhere.

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
Evariste Systems
Web     : http://www.evaristesys.com/
Tel     : (+1) (678) 954-0670
Direct  : (+1) (678) 954-0671