Very Computer

by **Peter B. York** » Thu, 27 May 1999 04:00:00

Does anyone know of a vendor who sells a good csu/dsu modem combined with
a v.35 interface, internal?

That works with Linux, of course?

Pete Yorke

by **Lee Shar** » Thu, 27 May 1999 04:00:00

Quote:> Does anyone know of a vendor who sells a good csu/dsu modem combined with
> a v.35 interface, internal?

There ain't no such thing. :-) A CSU/DSU takes 4 wire 56k/64k or T1 and
converts it to V.35 or RS232 Sync or Async. There are T1 interface cards
with built in CSU/DSUs and 4 wire ports. I assume there are 56k/64k
interface cards as well, but I have not seen them. I thnik you need to
look again at what you want, and what it will connect through/to.

Lee
--
SCSI is *NOT* magic. There are *fundamental technical reasons* why it is
necessary to sacrifice a young goat to your SCSI chain now and then. *
Black holes are where God divided by zero. - I am speaking as an
individual, not as a representative of any company, organization or other
entity. I am solely responsible for my words.

by **Peter B. York** » Thu, 27 May 1999 04:00:00

Lee,

Thanks for the info. Maybe If I explained what I want you could help me out a
little bit more. All I have at this point is some hurried notes from a friend
who knows a whole lot more than I do about telecomm.

What I want to set up is a router. Linux based. T1 (or fractional) coming in.
He (my friend) said (I think) I would need a csu/dsu modem and a V.35 inter-
face. He thought I might be able to get the two of them all-in-one.

I did some looking around the big companies, 3Com, etc., and I didn't find
these two items by that name.

What is it I really need and who makes them?

Thanks

:> Does anyone know of a vendor who sells a good csu/dsu modem combined with
:> a v.35 interface, internal?

: There ain't no such thing. :-) A CSU/DSU takes 4 wire 56k/64k or T1 and
: converts it to V.35 or RS232 Sync or Async. There are T1 interface cards
: with built in CSU/DSUs and 4 wire ports. I assume there are 56k/64k
: interface cards as well, but I have not seen them. I thnik you need to
: look again at what you want, and what it will connect through/to.

: Lee
: --
: SCSI is *NOT* magic. There are *fundamental technical reasons* why it is
: necessary to sacrifice a young goat to your SCSI chain now and then. *
: Black holes are where God divided by zero. - I am speaking as an
: individual, not as a representative of any company, organization or other
: entity. I am solely responsible for my words.

by **Matt Starne** » Thu, 27 May 1999 04:00:00

We get our csu/dsu's from a company called Adtran. Their website is
www.adtran.com. We have their TSU 120 that will support isdn and two t1's and
their NT1 Ace for dedicated isdn (don't use it though). I've only had to reboot
the TSU 120 once in three years.

Matt

> Lee,

> Thanks for the info. Maybe If I explained what I want you could help me out a
> little bit more. All I have at this point is some hurried notes from a friend
> who knows a whole lot more than I do about telecomm.

> What I want to set up is a router. Linux based. T1 (or fractional) coming in.
> He (my friend) said (I think) I would need a csu/dsu modem and a V.35 inter-
> face. He thought I might be able to get the two of them all-in-one.

> I did some looking around the big companies, 3Com, etc., and I didn't find
> these two items by that name.

> What is it I really need and who makes them?

> Thanks

> :> Does anyone know of a vendor who sells a good csu/dsu modem combined with
> :> a v.35 interface, internal?

> : There ain't no such thing. :-) A CSU/DSU takes 4 wire 56k/64k or T1 and
> : converts it to V.35 or RS232 Sync or Async. There are T1 interface cards
> : with built in CSU/DSUs and 4 wire ports. I assume there are 56k/64k
> : interface cards as well, but I have not seen them. I thnik you need to
> : look again at what you want, and what it will connect through/to.

> : Lee
> : --
> : SCSI is *NOT* magic. There are *fundamental technical reasons* why it is
> : necessary to sacrifice a young goat to your SCSI chain now and then. *
> : Black holes are where God divided by zero. - I am speaking as an
> : individual, not as a representative of any company, organization or other
> : entity. I am solely responsible for my words.

by **tspa..** » Thu, 27 May 1999 04:00:00

Peter,
I can't help you with the combo but can offer some personal experience.
I have always used Kentrox CSU's with good success. The company is now called
ADC Kentrox.
For V.35 interface I have used Coastcom multiplexer which will run
synchronous data at T-1 speeds. Coastcom has a new rack that combines CSU
with the V.35 interface. You can custom configure the rack to your needs.\
You may also look at Newbridge equipment. I think we will replace our
Coastcom equipment with the Newbridge stuff.
For routers try Cisco.
ts

> Does anyone know of a vendor who sells a good csu/dsu modem combined with
> a v.35 interface, internal?

> That works with Linux, of course?

> Pete Yorke

by **Daniel W. Halverso** » Sun, 13 Jun 1999 04:00:00

Take a look at Sangoma cards. (www.sangoma.com) They take T1/FT1 in,
integrate the CSU, and are supported with Linux. For configuration tips,
look at the Linux router project. (www.linuxrouter.org) You don't way
what's on the other end, but be aware that getting everything running
correctly can be very difficult. If possible, get a dedicated router and
make it work first to verify that the telco and ISP side are set up right.
Then "play." If you want to go with external CSU, take a look at Emerging
Technologies. I haven't had good experience with them, but they do have
Sync cards with Linux drivers.

Good luck.

Dan

> Does anyone know of a vendor who sells a good csu/dsu modem combined with
> a v.35 interface, internal?

> That works with Linux, of course?

> Pete Yorke

Very Computer

CSU/DSU Modem - v.35 interface combo

CSU/DSU Modem - v.35 interface combo

CSU/DSU Modem - v.35 interface combo

CSU/DSU Modem - v.35 interface combo

CSU/DSU Modem - v.35 interface combo

CSU/DSU Modem - v.35 interface combo

CSU/DSU Modem - v.35 interface combo