HPNA was designed for home wiring. It runs fine on Cat1/Cat0 "station wire" that resembles "barbed wire" in its
electrical properties. (OK, I'm stretching the point, but it runs fine in your house.)
The problem is that once you attempt to put HPNA signals down a bundle of wires, they'll 'leak' the signal, which will
arrive back at a neighboring PHY, be correctly decoded, and sent to the MAC.
Think about what happens when you connect two ports of an Ethernet swtich with a cross-over cable, and you'll get
the picture.
OTOH, I never saw a problem wit 'noise' and HPNA. PPM is fairly immune to the types of noise you'll find on a telephone circuit.
On Jul 6, 2004, at 2:05 PM, Shawn Rogers wrote:
Hi Roy, my company makes several different types of solutions for MxU deployments, including HPNA.� HPNA is very sensitive to line noise and crosstalk and generally requires very good wiring to get good performance.� Our HPNA products also offer adjustable power output, rate limiting, and in general give some of the best performance you can find in a HPNA product.��I however�agree with Jim and see VDSL as a much better solution than HPNA in most cases and we have directed most of our product focus in that direction.� It costs about $30-40 more per�link than HPNA, but we feel the reduction in support costs and better performance are worth the extra initial investment.�
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If you'd like to know more about either our HPNA or VDSL solutions, contact me off list and I can put you in touch with someone from our sales team or a product manager.��
�
Shawn Rogers
[EMAIL PROTECTED]
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roy Harling
Sent: Monday, July 05, 2004 8:15 PM
To: [EMAIL PROTECTED]
Subject: [SOCALWUG] HPNA vs. Wi-fi
I am working on putting together an internet access system for a new 48 unit apartment building. Does anyone have experience in deploying an HPNA system in a 40+ Multi-Unit environment? Also does anyone have POTS wiring experience for same type environment? I am looking for an easy reliable solution that I can duplicate in similar buildings with as low a cost as possible to do the job right with security and reliability of service the prime objection. Also easy off site management. Any help/advice would be appreciated.
�
Thanks
�
�
Roy Harling
[EMAIL PROTECTED]
