
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 somehow? 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

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 CCIE (R/S, V), CISSP 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 somehow? 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 _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system.

Thanks David. I presume this is mainly accomplished on VoIP subscriber "lines?" I'm just very confused about this term because it seems like a narrow subset of a broader and more cosmological truth about VoIP. Yes, VoIP makes it very easy for someone to order DIDs that aren't in the rate center in which they are geographically located, without any sort of billable "call forwarding" events or subscriber characteristics as far as the originating or terminating carriers are concerned. They're dumb pipes. So what? Why does this merit the term "virtual NXX" and how does it specifically relate to intercarrier comp issues? I live in Georgia; if I get a DID from a number block homed to NEWARK NJ, does that mean I have a "virtual NPA?" "Virtual NPA-NXX?" If I get a Moscow DID, do I have a "virtual country code?" Why the focus on VNXX specifically as a piece of terminology? I think putting the question that way cuts to the essence of what I'm probably missing... Hiers, David wrote:
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
CCIE (R/S, V), CISSP 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 somehow?
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

I guess I'd have to see the particular context for usage of VNXX that we're talking about. It was quite the item back about 5 years ago, but now it's probably just used to fluff up some marketing slide deck or something. Lots of legacy stuff running around in our thought patterns. DID, for instance, seems to be still legally defined (via current tariffs, court documents, etc) to have a very specific meaning of a copper trunk powered by the customer, over which a small number of digits can be signaled. In spite of all the legacy meaning, we kick that term around in VOIP discussions all the time. The real answers are probably buried in a couple dozen FCC docs and Federal Registers, but who's got the time? :) David Hiers CCIE (R/S, V), CISSP ADP Dealer Services 2525 SW 1st Ave. Suite 300W Portland, OR 97201 o: 503-205-4467 f: 503-402-3277 -----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Monday, August 10, 2009 8:49 AM To: Hiers, David Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] VNXX Thanks David. I presume this is mainly accomplished on VoIP subscriber "lines?" I'm just very confused about this term because it seems like a narrow subset of a broader and more cosmological truth about VoIP. Yes, VoIP makes it very easy for someone to order DIDs that aren't in the rate center in which they are geographically located, without any sort of billable "call forwarding" events or subscriber characteristics as far as the originating or terminating carriers are concerned. They're dumb pipes. So what? Why does this merit the term "virtual NXX" and how does it specifically relate to intercarrier comp issues? I live in Georgia; if I get a DID from a number block homed to NEWARK NJ, does that mean I have a "virtual NPA?" "Virtual NPA-NXX?" If I get a Moscow DID, do I have a "virtual country code?" Why the focus on VNXX specifically as a piece of terminology? I think putting the question that way cuts to the essence of what I'm probably missing... Hiers, David wrote:
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
CCIE (R/S, V), CISSP 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 somehow?
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 This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system.

V-NXX is mainly a conflict for Inter-LATA numbers. ILEC's can give you V-NXX inside the LATA with services like Extended PRI and RCF, but ILEC's still have that LATA issue and mindset. So when L3 or GPOPs start giving out state-wide PRI's, that's when the ILEC's start screaming. It all comes down to the money - Inter-Carrier Compensation. V-NXX is mainly Inbound traffic, which means that the ILEC's are paying. They never like that. That's the main problem. Regards, Peter @ RAD-INFO, Inc. :
-----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 somehow?
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.

Any good VoIP book to recommend? Thanks, Rod Dossouvi Sr Network Engineer INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202 366-9028 Mobile 202 345-9684

On 18/08/09 3:29 AM, Rod.Dossouvi.CTR at dot.gov wrote:
Any good VoIP book to recommend? Thanks,
That's possibly a little broad - it kinda depends on what you're looking to do - if you knew what software you wanted to use it would help but there are probably also general books. Are you looking to convert an existing network to VoIP? Are you wanting to run a PBX at home? Are you wanting to bridge SS7 and VoIP? Or are you just looking for a detailed definition of VoIP - in which case wikipedia or something probably has some reasonable articles. I'd say the best bet is to go to wikipedia, read up a bit on some of the involved technologies, then get a book on the ones you think you would use or that interest you. -- Cheers, Matt Riddell Director _______________________________________________ http://www.venturevoip.com/news.php (Daily Asterisk News) http://www.venturevoip.com/st.php (SmoothTorque Predictive Dialer) http://www.venturevoip.com/c3.php (ConduIT3 PABX Systems)

I am a fan of this overview of the VoIP world: Carrier Grade Voice Over IP, 2nd Edition http://www.amazon.com/Carrier-Grade-Voice-Over-second/dp/0071406344 and for a bonus book, Signaling System #7, Fifth Edition http://www.amazon.com/Signaling-System-McGraw-Hill-Computer-Communications/d... Joe Bell -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Matt Riddell Sent: Monday, August 17, 2009 1:54 PM To: Rod.Dossouvi.CTR at dot.gov Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] VoIP book and documentations. On 18/08/09 3:29 AM, Rod.Dossouvi.CTR at dot.gov wrote:
Any good VoIP book to recommend? Thanks,
That's possibly a little broad - it kinda depends on what you're looking to do - if you knew what software you wanted to use it would help but there are probably also general books. Are you looking to convert an existing network to VoIP? Are you wanting to run a PBX at home? Are you wanting to bridge SS7 and VoIP? Or are you just looking for a detailed definition of VoIP - in which case wikipedia or something probably has some reasonable articles. I'd say the best bet is to go to wikipedia, read up a bit on some of the involved technologies, then get a book on the ones you think you would use or that interest you. -- Cheers, Matt Riddell Director _______________________________________________ http://www.venturevoip.com/news.php (Daily Asterisk News) http://www.venturevoip.com/st.php (SmoothTorque Predictive Dialer) http://www.venturevoip.com/c3.php (ConduIT3 PABX Systems) _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system.

I highly recommend: http://oreilly.com/catalog/9780596008680/ Rod.Dossouvi.CTR at dot.gov wrote:
Any good VoIP book to recommend? Thanks,
Rod Dossouvi Sr Network Engineer INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202 366-9028 Mobile 202 345-9684
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- Alex Balashov - Principal Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671

Thanks much. Rod Dossouvi Sr Network Engineer INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202-366-9028 Mobile 240-422-4588 -----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Monday, August 17, 2009 5:06 PM To: Dossouvi, Rod CTR (FHWA) Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] VoIP book and documentations. I highly recommend: http://oreilly.com/catalog/9780596008680/ Rod.Dossouvi.CTR at dot.gov wrote:
Any good VoIP book to recommend? Thanks,
Rod Dossouvi Sr Network Engineer INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202 366-9028 Mobile 202 345-9684
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- Alex Balashov - Principal Evariste Systems Web : http://www.evaristesys.com/ Tel : (+1) (678) 954-0670 Direct : (+1) (678) 954-0671

Even though some of it is a little dated now, I also think voip-info.org is a fantastic reference overall. -Scott -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Rod.Dossouvi.CTR at dot.gov Sent: Monday, August 17, 2009 5:23 PM To: abalashov at evaristesys.com Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] VoIP book and documentations. Thanks much. Rod Dossouvi Sr Network Engineer INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202-366-9028 Mobile 240-422-4588 -----Original Message----- From: Alex Balashov [mailto:abalashov at evaristesys.com] Sent: Monday, August 17, 2009 5:06 PM To: Dossouvi, Rod CTR (FHWA) Cc: voiceops at voiceops.org Subject: Re: [VoiceOps] VoIP book and documentations. I highly recommend: http://oreilly.com/catalog/9780596008680/ Rod.Dossouvi.CTR at dot.gov wrote:
Any good VoIP book to recommend? Thanks,
Rod Dossouvi Sr Network Engineer INDUS Corporation FHWA, USDOT 1200 New Jersey Avenue South East Washington, DC 20590 Direct 202 366-9028 Mobile 202 345-9684
_______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
-- 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
participants (7)
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abalashov@evaristesys.com
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David_Hiers@adp.com
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Joe_Bell@adp.com
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matt@venturevoip.com
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peter@4isps.com
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Rod.Dossouvi.CTR@dot.gov
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scott@sberkman.net