OT: DSL/Modems

[GCC Consulting]

> -----Original Message-----
> From: 
> filepro-list-bounces+gcc=optonline.net at lists.celestial.com 
> [mailto:filepro-list-bounces+gcc=optonline.net at lists.celestial
.com] On Behalf Of Fairlight
> Sent: Sunday, October 24, 2004 10:48 PM
> To: filePro List
> Subject: Re: OT: DSL/Modems
> 
> You'll never BELIEVE what Bill Vermillion said here...:
> > 
> > And an interesting thing that can happen with DSL - since it is a 
> > high-frequency signal - similar to RF - is that sometimes 
> you can lose 
> > your voice line - as there needs to be enough conductivity to carry 
> > the voltages for ring, etc., - that the HF will seem to 
> bleed past LF 
> > impairments and the DSL will work when the regular phone line wont.
> 
> That's exactly what happened when I lost my voice line to 
> that hum.  -If- I could get a dialtone at all, I had the hum 
> at about 25db+.  If I hung up, it wouldn't--it would just be 
> the hum, no dial tone.  To force a dialtone, I actually had 
> to use multiple devices off-hook at once to force it to 
> acknowledge and kick over a dialtone.  Ahh, the fun effects 
> of a hard ground.  Words cannot convey my joy.  :)  However, 
> it was a blessing disguised as a curse, since after the week 
> of hell, I actually ended up with a 30%+ increase in average 
> DSL performance.  I'll take that, even if a week of hell is the cost. 
> 
> Yet the DSL chugged merrily away at 97KB/sec while the voice 
> line was completely knackered before they tried the first 
> fix, 120KB/sec after the first fix, and after they finally 
> actually cleared the voice line, 137KB/sec, and since then 
> it's improved into the 143-153 range, depending on my sync, 
> which will go weeks at a time without being touched.  It's 
> -so- much less finnicky now than it used to be.
> 
> But yeah, I've had the DSL working full bore and a next to 
> unusable (in some instances that week, unusable) voice line.  
> BTDTGTTS.
> 
> mark->
> --
> Bring the web-enabling power of OneGate to -your- filePro 
> applications today!
--------------------------------------------------------------
The problem my client has is most likely "noise" on the phone line portion of
this shared line.

Since their DSL service is from Covad, I don't want Verizon messing with this
line.  DSL is fine.  

The easiest thing was to move this modem to a shared dial-up phone line.  They
are connecting to A 9600 BAUD connection for both dial-up connections they have
to make.  The interesting thing is the transmissions are actually going faster
over the dial-up rather the shared DSL/phone line.  Now it is possible that this
line has been somewhat noisy for the last few years and has just gotten worse.

As I said originally,  this combination worked for over a year without a
problem.  Only since early Sept. did they start to have a real problem.

Richard Kreiss
GCC Consulting