[c-nsp] improving last-mile VDSL2 circuit between two Cisco routers

[Ziv Leyes]

Perhaps something like this could help you:
http://focus.ti.com/docs/prod/folders/print/ths6226.html



-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Martin T
Sent: Monday, June 20, 2011 11:48 AM
To: Walter Keen
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] improving last-mile VDSL2 circuit between two Cisco routers

Walter,
thanks for reply! As I made the connectors as good as I could, I think
I have no other options left other than increase the diameter of the
wire. At least it's worth a try. In addition, aren't there some sort
of amplifiers in use for DSL?

regards,
martin


2011/6/17 Walter Keen <walter.keen at rainierconnect.net>:
> Because you are essential increasing the gauge of wire, and therefore
> decreasing the resistance, you *should* have less loss.  Telco's have used
> this in the past to extend DSL beyond the distance limitations before,
> (although not common, each pair in the ground is not a cheap commodity)
>
> If they're in the same cable, or cable group, it's worth a try.  If they
> take different physical paths it may still work, but the capacitance of the
> overall link will have some odd effects.
>
> In theory, it should work, and raise your SNR, (and therefore some more
> potential speed, if it becomes good enough)
>
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net on behalf of Martin T
> Sent: Thu 6/16/2011 3:43 PM
> To: cisco-nsp at puck.nether.net
>
>
> Subject: [c-nsp] improving last-mile VDSL2 circuit between two Cisco routers
>
> I have connected two Cisco 1841 routers over poor quality POTS cabling
> using the "Ethernet over VDSL2"(profile 17a) converters. SNR is rather
> low and distance is long. Currently I have two POTS wires in use, but
> I could use another pair as well if this would help. I was wondering
> maybe it would help somehow if I use two pairs instead of one pair
> like illustrated here:
> http://img98.imageshack.us/img98/4020/vdsl2w.png
>
> I would for example solder the additional wires to main ones just
> before the RJ14 connecto. I know the VDSL2 converters link this way,
> but would it give some additional improvement? If yes, then why?
>
> regards,
> martin
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>
>

_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/

 
 
************************************************************************************
This footnote confirms that this email message has been scanned by
PineApp Mail-SeCure for the presence of malicious code, vandals & computer viruses.
************************************************************************************




The information contained in this e-mail message and its attachments is confidential information intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the sender, and then delete the message from your computer.  Thank you!

******** This mail was sent via Mail-SeCure System.********



 
 
************************************************************************************
This footnote confirms that this email message has been scanned by
PineApp Mail-SeCure for the presence of malicious code, vandals & computer viruses.
************************************************************************************