Just to expand in a small way on Leroy's comments, you can find them as
external devices which connects the line to the router (or other DTE device)
or as an internal or integrated device module which you can install directly
on the router..dj
Here is a link to a page at www.alliancedatacom.com which should provide you
the information you need to get a better understanding of what a CSU/DSU is
and how it works as well as a couple of tutorials. No flames please, I do
not have a relationship with Alliancedatacom.
Hope this helps
"Leroy Burns" <[EMAIL PROTECTED]> wrote in message
C734BD865F91D3118383009027DE092242B5DF@EXCHANGE2">news:C734BD865F91D3118383009027DE092242B5DF@EXCHANGE2...
> CSU/DSU
> stands for Channel Service Unit/Data Service Unit. This is the device
> connected to the incoming data communications line, usually a T1 or
> Fractional T1 line.
>
> Leroy
> -----Original Message-----
> From: Bradley J. Wilson [mailto:[EMAIL PROTECTED]]
> Sent: Friday, December 22, 2000 8:14 AM
> To: cisco
> Subject: Re: what is a CSU/DSU?
>
> Folks, is it really necessary to pounce on someone for asking an
occasional
> "simple" question? Okay, so CSU/DSUs are basic networking gear. But
guess
> what: *none* of the CCNA material I studied ever went into any great
detail
> on what exactly this thing was or did, and coming from the technical
> training side of the house never dealt with one until very recently.
Other
> examples: I have no idea what a "punch-down block" or a "patch panel" is.
> Maybe I've dealt with them before and would know if someone said "*That*
is
> a patch panel," but the fact is that most of the CC** materials only focus
> on the routers and switches, and not so much on the peripheral yet
essential
> devices.
>
> So, in other words, back off when someone asks a question you think is
> "beneath" you or this group. Just don't answer if you don't want to. But
> there are lots of valid, basic questions out there that yes, even CCNP/IE
> candidates would like answers to. It would be a shame if they felt they
> weren't "allowed" to ask those questions here.
>
> Sincerely,
>
> Bradley J. Wilson
> Who, despite being a CCNA, CCDA, MCSE, CNX-A, NNCSS, MCT and CTT, does not
> know what a punch-down block is. Sue me.
>
>
> ----- Original Message -----
> From: netlinesys
> Newsgroups: groupstudy.cisco
> To: [EMAIL PROTECTED]
> Sent: Friday, December 22, 2000 7:55 AM
> Subject: re: what is a CSU/DSU?
>
>
> Zhiping,
>
> If u know the basic of networking , u can answer this question !!??
> I found it difficult for CCNP candidate to ask this question.
>
> ----- Original Message -----
> From: "Zhiping Li" <[EMAIL PROTECTED]>
> Newsgroups: groupstudy.cisco
> Sent: Friday, December 22, 2000 12:37 PM
> Subject: what is a CSU/DSU?
>
>
> > Hi,ciscoer:
> >
> > when I study cisco ccnp,
> > I always find CSU/DSU,
> > what are them?
> > what are their use?
> > Are they some kind of MODEM?
> > thanks .
> >
>
>
>
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