| Author |
Message |
Guest
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 Posted:
Sun Jan 30, 2005 6:52 am Post subject:
SHDSL? |
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Hello.
Has anyone used this SHDSL? I am about 20K ft. from the CO. Verizon told
me that I can get SHDSL which is like a business type of DSL. However, it
is very expensive. Is anyone using this at home who cannot get cable modem
and regular DSL?
I would like to know how this is set up. Does it use phone lines? I already
have two lines: one for voice; second is for Dial-up and Fax machine.
Thank you in advance. :)
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David H. Lipman
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John P. Dearing
Guest
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| Posted:
Mon Jan 31, 2005 7:22 am Post subject:
Re: SHDSL? |
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ANTant@zimage.com wrote:
| Quote: | Hello.
Has anyone used this SHDSL? I am about 20K ft. from the CO. Verizon told
me that I can get SHDSL which is like a business type of DSL. However, it
is very expensive. Is anyone using this at home who cannot get cable modem
and regular DSL?
|
Being 20Kft from the C.O. is going to probably disqualify you from SHDSL
as well. Even if somehow you *do* qualify, my guess is that you'll only
qualify for the lowest speeds (192K or maybe 384K). At that distance,
you're probably on loaded cable anyway.
*ALL* flavors of xDSL are affected by distance from the DSLAM. And
*NONE* will work over loaded cable.
Good luck, but I rather doubt that you'll qualify.
John
--
John P. Dearing
A+, Network+, Server+
To reply: Just drop "YOURPANTS" in my address! 8-) |
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David Lesher
Guest
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| Posted:
Tue Feb 01, 2005 3:55 am Post subject:
Re: SHDSL? |
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"John P. Dearing" <John.Dearing@VerYOURPANTSizon.NET> writes:
| Quote: | Has anyone used this SHDSL? I am about 20K ft. from the CO. Verizon told
Being 20Kft from the C.O. is going to probably disqualify you from SHDSL
as well. Even if somehow you *do* qualify, my guess is that you'll only
qualify for the lowest speeds (192K or maybe 384K). At that distance,
you're probably on loaded cable anyway.
|
I was told that whichever form Verizontal uses here in DC [and I
*think* that's HADSL...] for DS-1 had repeaters available....
But I note they still deploy T-1 [2 pairs w/ 6Kft repeater spacing]
in some cases.
--
A host is a host from coast to coast.................wb8foz@nrk.com
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Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433 |
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slim stick
Guest
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| Posted:
Tue Feb 01, 2005 7:36 am Post subject:
Re: SHDSL? |
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|
"John P. Dearing" <John.Dearing@VerYOURPANTSizon.NET> wrote in message
news:3EgLd.1964$QS5.435@trndny06...
| Quote: | ANTant@zimage.com wrote:
Hello.
Has anyone used this SHDSL? I am about 20K ft. from the CO. Verizon told
me that I can get SHDSL which is like a business type of DSL. However,
it
is very expensive. Is anyone using this at home who cannot get cable
modem
and regular DSL?
Being 20Kft from the C.O. is going to probably disqualify you from SHDSL
as well. Even if somehow you *do* qualify, my guess is that you'll only
qualify for the lowest speeds (192K or maybe 384K). At that distance,
you're probably on loaded cable anyway.
*ALL* flavors of xDSL are affected by distance from the DSLAM. And
*NONE* will work over loaded cable.
Good luck, but I rather doubt that you'll qualify.
John
--
John P. Dearing
A+, Network+, Server+
To reply: Just drop "YOURPANTS" in my address! 8-)
|
For some reason I thought that SHDSL could use in-line signal conditioners
or amplifiers to extend the distance somewhat like ISDN. I could be wrong or
miss-informed. |
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David Ross
Guest
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| Posted:
Tue Feb 01, 2005 3:50 pm Post subject:
Re: SHDSL? |
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|
| Quote: | Being 20Kft from the C.O. is going to probably disqualify you from SHDSL
as well. Even if somehow you *do* qualify, my guess is that you'll only
qualify for the lowest speeds (192K or maybe 384K). At that distance,
you're probably on loaded cable anyway.
*ALL* flavors of xDSL are affected by distance from the DSLAM. And
*NONE* will work over loaded cable.
Good luck, but I rather doubt that you'll qualify.
For some reason I thought that SHDSL could use in-line signal conditioners
or amplifiers to extend the distance somewhat like ISDN. I could be wrong or
miss-informed.
I think that: |
HDSL => High speed DSL
SHDSL => Synchronous HDSL
which means you're dealing with DSL distance limits. |
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John P. Dearing
Guest
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| Posted:
Thu Feb 03, 2005 7:59 am Post subject:
Re: SHDSL? |
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David Lesher wrote:
| Quote: | I was told that whichever form Verizontal uses here in DC [and I
*think* that's HADSL...] for DS-1 had repeaters available....
|
It may very weel be that SHDSL can be provisioned using some kind of
repeater. Signals that are symmetrical do lend themselves to being
repeatered.
I suppose it will all depend on the service. If the SHDSL offering is a
business class offering with term commitments and service level
agreements then they may actually take the time to engineer repeaters
into it. On the other hand, if it's just a gussied up ADSL offering at a
low price, then maybe not.
| Quote: | But I note they still deploy T-1 [2 pairs w/ 6Kft repeater spacing]
in some cases.
|
Let's not confuse xDSL with T-1 offerings. They are two *completely*
different things.
There are very few of the old style T-1's (conditioned copper circuits
with repeaters every 6Kft) around anymore.
Many T-1's are now delivered over fiber, using either T-2 multiplexers
or SONET OC-3 (or higher) Multiplexers. Some are a hybrid of fiber (to a
remote terminal) and copper to the customer premesis. That last few
thousand feet is deployed using HSDL (High bitrate DSL) technology from
companies like Adtran and Pairgain. It has *nothing* to do with the DSL
were're talikng about in this group. It's a different way of encoding
the T-1 signal onto the copper that requires much less conditioning of
the copper than before. You can also go much further before repeaters
are required. But these are DESIGNED and ENGINEERED circuits with telco
provided equipment at the end (smartjack). Not DSL for home use, two
completely different animals.
John
--
John P. Dearing
A+, Network+, Server+
To reply: Just drop "YOURPANTS" in my address! 8-) |
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Michael
Guest
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| Posted:
Thu Feb 03, 2005 10:04 pm Post subject:
Re: SHDSL? |
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|
John P. Dearing wrote:
| Quote: | David Lesher wrote:
I was told that whichever form Verizontal uses here in DC [and I
*think* that's HADSL...] for DS-1 had repeaters available....
It may very weel be that SHDSL can be provisioned using some kind of
repeater. Signals that are symmetrical do lend themselves to being
repeatered.
|
SHDSL (ITU-T Recommendation G.991.2) can indeed be repeatered. This is also
true for the derived Ethernet standard 2BASE-TL (IEEE Std 802.3ah-2004),
although it is not explicit in the standard.
Michael
(remove filter from email address)
--
http://www.ethernetinthefirstmile.com |
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Michael
Guest
|
| Posted:
Thu Feb 03, 2005 10:11 pm Post subject:
Re: SHDSL? |
|
|
David Ross wrote:
| Quote: | Being 20Kft from the C.O. is going to probably disqualify you from SHDSL
as well. Even if somehow you *do* qualify, my guess is that you'll only
qualify for the lowest speeds (192K or maybe 384K). At that distance,
you're probably on loaded cable anyway.
*ALL* flavors of xDSL are affected by distance from the DSLAM. And
*NONE* will work over loaded cable.
Good luck, but I rather doubt that you'll qualify.
For some reason I thought that SHDSL could use in-line signal
conditioners
or amplifiers to extend the distance somewhat like ISDN. I could be
wrong or
miss-informed.
I think that:
HDSL => High speed DSL
SHDSL => Synchronous HDSL
which means you're dealing with DSL distance limits.
|
SHDSL is 'Single-Pair High-speed Digital Subscriber Line' (according to
ITU-T Rec. G.991.2), so it's indeed a member of the DSL family. Just like
any other transmission technology, it has distance limitations (due to
signal attenuation, noise, cross-talk from adjacent binders). You may need
to use multiple pairs or repeaters to get SHDSL out to the distance you
mentioned.
Michael
(remove filter from email address)
--
http://www.ethernetinthefirstmile.com |
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David H. Lipman
Guest
|
| Posted:
Thu Feb 03, 2005 10:22 pm Post subject:
Re: SHDSL? |
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2BASE-TL -- IEEE Std 802.3ah-2004
Wow, that's new to me I'll have to read up on that standard !
--
Dave
"Michael" <usenet@filter.ethernetinthefirstmile.com> wrote in message
news:4202591e$0$22469$ba620e4c@news.skynet.be...
| John P. Dearing wrote:
| > David Lesher wrote:
| >
| > > I was told that whichever form Verizontal uses here in DC [and I
| > > *think* that's HADSL...] for DS-1 had repeaters available....
| >
| > It may very weel be that SHDSL can be provisioned using some kind of
| > repeater. Signals that are symmetrical do lend themselves to being
| > repeatered.
|
| SHDSL (ITU-T Recommendation G.991.2) can indeed be repeatered. This is also
| true for the derived Ethernet standard 2BASE-TL (IEEE Std 802.3ah-2004),
| although it is not explicit in the standard.
|
| Michael
| (remove filter from email address)
| --
| http://www.ethernetinthefirstmile.com
|
| |
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