VDSL CPE Mixed Results

Thu Jan 15 13:36:50 UTC 2015

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 at 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 at 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
> >
> >
> >
> >
> >
> >
>