From the Society of Cable Telecommunications Engineers (SCTE) list:
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SCTE-LIST Digest 2136
Topics covered in this issue include:
1) RE: Ethernet Switch
by "Keith R. Hayes, BCE" <keithhayes@atl.mediaone.net>
2) RE: Ethernet Switch
by "Konstantin Barinov" <sbr@infonet.ee>
3) re: tas 8250 cable plant and interference simulator SCTE-LIST digest 2135
by Dennis <dzellner@spartanburg.net>
4) re: eBay & Scientific Atlanta Model D9475 64QAM Modulator SCTE-LIST digest 2135
by Dennis <dzellner@spartanburg.net>
5) Re: eBay & Scientific Atlanta Model D9475 64QAM Modulator SCTE-LIST
digest 2135
by "Chris May" <chris@westernet.net>
6) BET
by "Steven Attaway" <srattaway@hotmail.com>
7) Distance learning
by Matt Schonlau <matt@pioncomm.net>
8) Re: Distance learning
by Everything On IP <everything_on_ip@yahoo.com>
9) A Friday modem problem
by "Chris May" <chris@westernet.net>
10) Re: BET
by "Stacy Colgrove" <scolgrove@kscable.com>
11) Re: A Friday modem problem
by Poge Smit <poge@oberlin.net>
12) Re: A Friday modem problem
by "Chris May" <chris@westernet.net>
13) Re: eBay & Scientific Atlanta Model D9475 64QAM Modulator SCTE-LIST digest 2135
by "Cliff Current" <cableguy@cfl.rr.com>
14) RE: Ethernet Switch
by "Keith R. Hayes, BCE" <keithhayes@atl.mediaone.net>
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Subject: RE: Ethernet Switch
Walter, please try this link:
www.airswitch.com
Be advised, they license their technology (per sub per month) rather than directly selling it.
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DAVE, are you listening to this?
---------
Keith
===========================
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Subject: RE: Ethernet Switch
Do you believe this airswitch site has a real technology behind, rather than advertise some crap and hog investments? Somebody remembers "project oxygen"? :)
rgds------------
> Subject: RE: Ethernet Switch
>
>
> Walter, please try this link:
>
> www.airswitch.com
>
> Be advised, they license their technology (per sub per month) rather than
> directly selling it.
>
> Keith
>
>
>
>
>
Eric,
You might want to try speaking with Paul Legris regarding your questions about
the tas 8250 cable plant and interference simulator. He buys and sells a lot
of test equipment and is very knowledgable.
Sincerely,
--------------
Subject: re: eBay & Scientific Atlanta Model D9475 64QAM
Why would you think it was stolen? Because it's posted so inexpensively? Just
curious to your thinking?
Sincerely,
------
>> In looking at what else this person is selling, sounds like they know
what
>> they are talking about. CVS TBC, SA 6455 HE Amp, etc.
>> Inside job or a something left in a SMATV conversion?
>> Anyone in Orlando know of anything?
>>
------
---------
Subject: BET
The noise is pretty obvious when there is no audio...or rap ;-)
Steve
What kind of noise? I don't hear anything on the TV on my desk (puny inch speaker).
________________
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Subject: Distance learning
Ladies and Gentlemen (Guys),
I live in very rural SW Kansas. We currently have a distance learning
network that allows one teacher to teach 4 classrooms at once. For instance
a foreign language teacher at Hugoton High School has a continuous view
session with Rolla HS, Holcomb HS and Lakin HS. Our system connects 26 sites
and schedules a DS3 switch to connect the appropriate classrooms together at
the appropriate time. Do the math we have over 70 DS3's in our network,
there has to be a better way!
Is there any one out there that makes a solution for reducing the bandwidth
used? I am aware of the technology, but what I am interested in is the names
of companies that put it all together, such as Todd Communications.
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Subject: Re: Distance learning
> Ladies and Gentlemen (Guys),
> I live in very rural SW Kansas. We currently have a
> distance learning
> network that allows one teacher to teach 4
> classrooms at once. For instance
> a foreign language teacher at Hugoton High School
> has a continuous view
> session with Rolla HS, Holcomb HS and Lakin HS. Our
> system connects 26 sites
> and schedules a DS3 switch to connect the
> appropriate classrooms together at
> the appropriate time. Do the math we have over 70
> DS3's in our network,
> there has to be a better way!
> Is there any one out there that makes a solution for
> reducing the bandwidth
> used? I am aware of the technology, but what I am
> interested in is the names
> of companies that put it all together, such as Todd
> Communications.
>
Matt -
There are innumerable ways to do this. Take a peek at
the info listed in the selected URLs below. I have
asked someone from our team to contact you about some
of our solutions.
cisco.com
cisco.com
cisco.com
cisco.com
Regards,
--------
Subject: A Friday modem problem
I've been on the modem install from hell this week (actually started
a week ago) and thought I'd share with you. I wish I could say it's
working. [<-- NB: secret agenda, to make this modem work!]
It's Lancity LCp, up at 23.75, down at 94.75. Local FM at 91.3, a 40
mile distant at 94.9. I'm one station from the headend, it's minitrunk,
with DE's and 488's. My house is on the second station and working.
There are beaucoup farther down. He's the only one on his 8dB leg.
There was a data sub who moved on the same pole, hot tap to lockbox.
Older trailer, 2 TV's, older but serviceable o/h drop with a midspan,
house wiring older but seemed OK in my judgment too.
On pole, an old Mag 18-8 tap, followed by an 8-2 Taikan (hot taps for 2
small apt lockboxes). Lockboxes got rid of need for most of 8way ports.
First of all, contractor, when pulling data trap, hooked up wrong drop.
Secondly, he installed primary splitter (data v nondata) upsidedown.
Just to kick it off.
Third, customer's rig is a new Gateway, very small box, only 2 PCI
slots, and shorter than standard height available for NIC, so back plate
sticks up above top of puter. Very ugly, had to bend plate to fit.
Windows ME on machine, ugh!
Got all this straightened out, still no modem. It's up/down. Ran a new
drop. Pulled 18-8, replaced with 15-4, now a respectable +7 at modem
for the adjacent videos. Didn't matter to the modem. Reverse tested
fine with pocket oscillator. SNMPc recorded modem TXPwr at +41, odd
thing is RXPwr is NA.
Modem works fine on bench from -9.5 up, TXpwr at +51.
Came back yesterday, modem's a brick, two arc burn marks on box.
Customer had rearranged his machine. Since I buy my modems used, I
can't
really throw a rock yet, especially since it's not working for more than
5 minutes at a whack. Asked him if he saw any sparks when rearranging,
of course not. I couldn't replicate.
Replaced the modem. Still mostly down. Today I took spectrum analyzer
to look for bogus downstream RF. Everything was normal looking, of
course. No RF floating around in the house. Video average capured
nothing. Cut the TV's out of the line, turned off everything but modem.
I looked at his AC power and grounding with voltmeter. 0.8VAC
difference from o/h to house wiring, common mode. Tried a VBC to
isolate modem.
On a lark, I added my 3' analyzer test lead to the modem. Now the
lights blink in a different pattern, holding longer on the coax light.
Gonna try a 10' and 20'jumper, maybe something here.
Then I'm gonna take a modem in the bucket and go tap to tap to check.
Otherwise I'm out of ideas, other than to put him on dialup and give
up. That's not in the cards, though.
-c
--------
Subject: Re: BET
I'll bet if you swap the POS-4400x out for a 4500 the sound is OK.
Later,
SC
------
------
Subject: Re: A Friday modem problem
So much for voltage. How about current?
My bets are on a power/grounding problem at the residence.
Out.
------------------------------
Subject: Re: A Friday modem problem
You ask all the hard ones, eh? Went deeper behind entertainment center,
found an extremely worn AC outlet, recommended they replace it (as a
fire hazard). It's unsafe but don't really think it could be causing
the modem not to receive. OK, will measure current, but there was
nothing in the way of the teeniest spark at the GBK.
Took the modem up to the tap in the bucket. It lit up right away.
Moved the drop to that port. Tried it in the house, it lit once and
then went out, as normal. SNMPc recorded a TXPwr of +33, which makes
sense. FYI, a 3.5dB splitter and 3 dB or less of drop. What's wierd is
that it's getting bootp, there are about a million entries in the SNMPc
history.
Replaced the distribution splitter faceplate, on the off chance that an
8dB leg was bad. No difference.
Ah well, beer o'clock. Maybe hops will cure it. What week is this
anyway?
------------------------------
Subject: Re: eBay & Scientific Atlanta Model D9475 64QAM
This is a multi-part message in MIME format.
It appears that these items came from Time Warner's "Full Service =
Network" . Notice the FSN property tag on the enlarged photo. How =
they were obtained is another question. Many items were sold when the =
FSN project shut down. Hopefully these were obtained through a =
legitimate source. =20
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Subject: Re: eBay & Scientific Atlanta Model D9475 64QAM Modulator =
My experience on eBay is that items frequently rise to their true =
value or greater in the last few minutes of the auction. The opening =
price means nothing.=20
Why would you think it was stolen? Because it's posted so =
inexpensively? Just=20
curious to your thinking?=20
Sincerely,=20
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Subject: RE: Ethernet Switch
They have a couple of operating systems in Utah, and more on the way. No
vaporware from what I have seen thus far.
--------
Subject: RE: Ethernet Switch
Do you believe this airswitch site has a real technology behind, rather than
advertise
some crap and hog investments? Somebody remembers "project oxygen"? :)
End of SCTE-LIST Digest 2136 |
