Not entirely accurate in http://www.dslreports.com/forum/r21602776 en Mon, 30 Nov 2009 00:23:37 EDT Mon, 30 Nov 2009 00:23:37 EDT Re: Not entirely accurate http://www.dslreports.com/forum/remark,21610306 qworster :
said by dynodb See Profile :

You have no clue; I likely have forgotten more about DSLAMs than you will ever know.

Hint: It's not about "cabinets".
Really?

You are the one that hasn't a clue. Do you even know what crosstalk is? How about a db (decibel)? Hint: BELL]]> http://www.dslreports.com/forum/remark,21610306 Fri, 19 Dec 2008 21:55:31 EDT Re: Not entirely accurate http://www.dslreports.com/forum/remark,21608435 dynodb : You have no clue; I likely have forgotten more about DSLAMs than you will ever know.

Hint: It's not about "cabinets". ]]> http://www.dslreports.com/forum/remark,21608435 Fri, 19 Dec 2008 15:38:54 EDT Re: Not entirely accurate http://www.dslreports.com/forum/remark,21606438 Deadpool :
said by qworster See Profile :

said by Deadpool See Profile :

Bingo. We call is 'spectral interference'.
No, it's called crosstalk.

My post from the other day addresses this:

»The bottom line is this:
Potato, Potatoe. Every company likes to invent their own terms. :D
--
Disclaimer: If I express an opinion, it is my own opinion, not that of Bell or its related companies.]]> http://www.dslreports.com/forum/remark,21606438 Fri, 19 Dec 2008 09:13:07 EDT Re: Not entirely accurate http://www.dslreports.com/forum/remark,21605467 qworster :
said by dynodb See Profile :

The glich doesn't happen any time a ADSL circuit is in the same count as an ADSL2+ circuit. In fact, ADSL and ADSL2+ are deployed from the same DSLAM- if that were true, none of the ADSL out of a DSLAM offering ADSL2+ would work very well.

It apparently occurs in a specific circumstance- when a longer ADSL line from the CO is in the same count as a shorter ADSL2+ one.
You are wrong.
Qwest is putting DSLAMs IN the FTTN neighborhood cabinets. Their reason for this is to make the copper loop shorter, so they can run ADSL2 (which offers faster speeds but doesn't work at loop lengths longer then about 1/2 mile).

The ADSL circuits that originate at the DSLAM in the phone office have been attenuated (cut down by pair losses) significantly by the time they enter the cabinet. They can't compete with the local signals that can be 20 to 30 db stronger then they are.

I explain it here: »The bottom line is this:]]> http://www.dslreports.com/forum/remark,21605467 Fri, 19 Dec 2008 00:10:13 EDT Re: Not entirely accurate http://www.dslreports.com/forum/remark,21605444 qworster :
said by Deadpool See Profile :

Bingo. We call is 'spectral interference'.
No, it's called crosstalk.

My post from the other day addresses this:

»The bottom line is this:]]> http://www.dslreports.com/forum/remark,21605444 Fri, 19 Dec 2008 00:02:13 EDT Re: Not entirely accurate http://www.dslreports.com/forum/remark,21603288 Deadpool : Bingo. We call is 'spectral interference'.]]> http://www.dslreports.com/forum/remark,21603288 Thu, 18 Dec 2008 16:05:47 EDT Re: Not entirely accurate http://www.dslreports.com/forum/remark,21603002 Telus Lurker :
said by dynodb See Profile :

The glich doesn't happen any time a ADSL circuit is in the same count as an ADSL2+ circuit. In fact, ADSL and ADSL2+ are deployed from the same DSLAM- if that were true, none of the ADSL out of a DSLAM offering ADSL2+ would work very well.

It apparently occurs in a specific circumstance- when a longer ADSL line from the CO is in the same count as a shorter ADSL2+ one.
Good point. It can occur when any xDSL signal out of a CO is in the same distribution bundle as any xDSL signal out of a Cabinet/Node/SAC/JWI/Roadbox. ]]> http://www.dslreports.com/forum/remark,21603002 Thu, 18 Dec 2008 15:13:20 EDT Not entirely accurate http://www.dslreports.com/forum/remark,21602776 dynodb : The glich doesn't happen any time a ADSL circuit is in the same count as an ADSL2+ circuit. In fact, ADSL and ADSL2+ are deployed from the same DSLAM- if that were true, none of the ADSL out of a DSLAM offering ADSL2+ would work very well.

It apparently occurs in a specific circumstance- when a longer ADSL line from the CO is in the same count as a shorter ADSL2+ one.]]> http://www.dslreports.com/forum/remark,21602776 Thu, 18 Dec 2008 14:26:24 EDT