I'm sure the FCC would love to hear that. Carlos Alcantar Race Telecommunications, Inc. 101 Haskins Way South San Francisco, CA 94080 P: 650.649.3550 F: 650.649.3551 -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Ujjval Karihaloo Sent: Wednesday, December 09, 2009 10:14 AM To: Scott Berkman; 'Alex Balashov' Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] Conferencing NPAs 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 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops