Re: VDSL CPE Mixed Results

[Andrew Carey <carey () ar-ballbat org>]

Also, what do your stats look like? 6kft is getting beyond the sweet spot for VDSL2, particularly if you're trying to 
push 10Mbps on the upstream. 

Sent from my iPhone
> On Jan 15, 2015, at 5:36, Shawn L <shawnl () up net> wrote:
>
> I was going to ask if you've tested the cable pair at all.  If the pair is
> bad, or even a little out of balance, bad scotch loks, etc. VDSL isn't
> going to work properly.
>
> We have customers that are definitely in-range for VDSL but who cannot get
> it because there is a 26 gauge insert between two cross-connect cabinets in
> the field
>
> > On Thu, Jan 15, 2015 at 8:15 AM, Scott Helms <khelms () zcorum com> wrote:
> >
> > I'm going to guess you're a CLEC from your website and a common problem
> > I've seen in that scenario is that vectoring doesn't work between DSLAMs
> > because it needs all pairs to be part of the vector group so that the DSLAM
> > can mitigate FEXT.  DSLAM vendors have been working on system level, rather
> > than DSLAM/binder level, vectoring for a while but cross vendor support is
> > questionable at best.
> >
> > Read the section on system level vectoring especially:
> > http://www.adtran.com/web/fileDownload/doc/32362
> >
> > If you are sharing binders with the ILEC and potentially other CLECs then
> > you really need to talk to you ILEC rep and find out what they're doing for
> > system level vectoring to see if there is an option for your DSLAMs to be
> > included.  That benefits everyone and will _greatly_ increase performance.
> > VDSL2 speeds will otherwise be unreachable unless the ILEC gives each CLEC
> > their own binder, not very practical.
> >
> >
> >
> > Scott Helms
> > Vice President of Technology
> > ZCorum
> > (678) 507-5000
> > --------------------------------
> > http://twitter.com/kscotthelms
> > --------------------------------
> >
> > On Wed, Jan 14, 2015 at 9:29 AM, Stetson Blake <
> > Stetson.Blake () datayardworks com> wrote:
> >
> > > Hey All,
> > >
> > > We have been deploying Adtran 838(shdsl) and 868(dsl) units in our metro
> > > area with mixed results. The devices themselves are reliable and secure
> > > it would seem, but the speeds were are able to get are not. ie. we have
> > > deployed 'vdsl' and needed 3 lines to get up to 10x10 speeds. We are
> > > using an Adtran TA5000 on the other end to terminate our connections.
> > > The distance between the site and CO is not great (under 6k feet). What
> > > gives? Are we provisioning wrong, using the wrong equipment, or a
> > > combination of both?
> > > If we were able to get the speeds others have been reporting from VDSL,
> > > life would be great.
> > > Anyone feel free to contact me off-list or on, this has had me
> > > scratching my head for a while now.
> > >
> > > Thanks,
> > >
> > > --
> > > Stetson Blake
> > > Network Technician
> > > DataYard
> > > 130 West Second St.
> > > Suite 250
> > > Dayton, OH 45402
> > >
> > > http://datayardworks.com