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List: linux-router
Subject: Re: [LRP] Which Linux WAN Card?
From: "Alphonse Ogulla" <lrp () kenyalinux ! or ! ke>
Date: 2001-10-29 17:02:10
[Download RAW message or body]
Thanks for your prompt reply,
I want to replace the Newbridge Mainstreet 2700 series DTU because there is a monthly \
fee attached by the local Telco. I also see some folks using a device known as a \
WebRanger which I reckon must be a DTU + Router.
More about the ISDN...
Kenstream is a multiservice network providing frame relay access in an ISDN like \
service as an economical alternative to permanent switched ISDN. The two datastreams \
are rate adapted and then prepared for subrate multiplexing The Newbridge 2700 series \
DTU connects data devices (routers) to a 2B1Q or 27LC2 channel unit installed in \
large multiplexers at the Telcos premises. ISDN BRI physical layer compartibility \
(ANSI T1.601 - 1992 compliant) is achieved using 2B1Q line encoding. Note that ANSI \
T1.601 compliant ISDN U interface repeaters can be used to extend loop lengths beyond \
7 kms between the DTU and the Telco's Mainstreet 3600 series multiplexers.
> -----Original Message-----
> From: Peter Cavender [SMTP:cavender@relay-host.net]
> Sent: 28 October 2001 09:55
> To: Linux Router Project
> Subject: Re: [LRP] Help! Which Linux WAN Card?
>
> Greetings, Nairobi.
> There are many vendors selling ISDN interfaces, but you need to know the details \
of your telco's ISDN. > Do you want to use the Mainstreet DTU or replace it?
> If you use it, at 64kbps a regular RS232 serial port would be fine.
> If you need a V.35 port, Sealevel Systems (www.sealevel.com) has a good PCI card \
with Linux support. > V.35 cards are expensive.
> Please tell me more about what you need to do. I have some equipment I will give \
to you if you can use it. > I had the pleasure of visiting Kenya in 1977. Is it \
"jambo" ? :-) >
> Peter Cavender
> Vermont, USA
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<DIV><FONT face=Arial size=2>Thanks for your prompt reply,</FONT></DIV>
<DIV><FONT face=Arial size=2>I want to replace the Newbridge Mainstreet 2700
series DTU because there is a monthly fee attached by the local Telco. I also
see some folks using a device known as a WebRanger which I reckon must be a DTU
+ Router.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>More about the ISDN...</FONT></DIV>
<DIV><FONT face=Arial size=2>Kenstream is a multiservice network
providing frame relay access in an ISDN like service as an economical
alternative to permanent switched ISDN. The two datastreams are rate adapted and
then prepared for subrate multiplexing</FONT></DIV>
<DIV><FONT face=Arial size=2>The Newbridge 2700 series DTU connects data devices
(routers) to a 2B1Q or 27LC2 channel unit installed in large multiplexers
at the Telcos premises. ISDN BRI physical layer compartibility (ANSI T1.601 -
1992 compliant) is achieved using 2B1Q line encoding. Note that ANSI T1.601
compliant ISDN U interface repeaters can be used to extend loop lengths beyond 7
kms between the DTU and the Telco's Mainstreet 3600 series
multiplexers.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV>> -----Original Message-----<BR>> From: Peter Cavender [SMTP:<A
href="http://us.f112.mail.yahoo.com/ym/Compose?To=cavender@relay-host.net&YY=50800&order=down&sort=date&pos=0">cavender@relay-host.net</A>]<BR>> \
Sent: 28 October 2001 09:55<BR>> To: Linux Router Project<BR>>
Subject: Re: [LRP] Help! Which Linux WAN Card?<BR>> <BR>> Greetings,
Nairobi. <BR>> There are many vendors selling ISDN interfaces,
but you need to know the details of your telco's ISDN. <BR>> Do you
want to use the Mainstreet DTU or replace it? </DIV>
<DIV>> If you use it, at 64kbps a regular RS232 serial port would be
fine.</DIV>
<DIV>> If you need a V.35 port, Sealevel Systems (www.sealevel.com) has a
good PCI card with Linux support.</DIV>
<DIV>> V.35 cards are expensive. <BR>> Please tell me more about
what you need to do. I have some equipment I will give to you if you can
use it. <BR>> I had the pleasure of visiting Kenya in 1977. Is
it "jambo" ? :-) <BR>> <BR>> Peter Cavender <BR>> Vermont, USA
</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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