[VoiceOps] VNXX

Hiers, David David_Hiers at adp.com
Mon Aug 10 11:30:54 EDT 2009

Unless things have changed recently... 

A virtual NXX is an NXX assigned to a subscriber that comes from a rate center that does not physically contain the subscriber.  If you live in HACKENSACK, and your TN is from NEWARK, you've got a virtual NXX.


David Hiers

ADP Dealer Services
2525 SW 1st Ave.
Suite 300W
Portland, OR 97201
o: 503-205-4467
f: 503-402-3277 

-----Original Message-----
From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Alex Balashov
Sent: Sunday, August 09, 2009 3:58 PM
To: voiceops at voiceops.org
Subject: [VoiceOps] VNXX

What does the FCC and/or intercarrier compensation reform crowd mean, 
exactly, when they say "Virtual NXX?"

Is that some class of clever remote call forwarding schemes from a CO 
where the call between it and your rate center is rated LD by the ILEC, 
but which some call forwarding product manages to get around or mitigate 

Or does it refer to carriers picking up inbound calls at the LATA 
supertandems by carriers from rate centers in which they don't have 
direct end-office trunking and whose number blocks are not homed to the 
tandems (any tandems) to which the carrier is connected?  This was 
rather common during the dialup boom and often skirted the 
'DS1-of-consistent-usage = DEOT needed' requirement in most form ICAs, 
as I understand it.

Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (678) 237-1775
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