From: Patrick (pjm@xxxxxxxxxxxxxxxxx)
Date: Wed Dec 19 2001 - 20:49:50 GMT-3
I'm pretty sure you can do it with an External NT-1. I am not sure of the
wiring of an external NT-1 but the Motorola ones that I used to use in my
lab had two S/T interfaces and one U interface.
If you plugged the routers into the S/T interfaces (assuming your routers
had S/T interfaces and not U) then you could use a single SPID on each
router and use them to call one another.
I'm not 100% sure about this as I have never tried it, I just heard that it
works from one of the CCIE's I worked with.
Patrick
----- Original Message -----
From: "Cassidy D. Smith" <csmith@plannetconsulting.com>
To: <ccielab@groupstudy.com>
Sent: Wednesday, December 19, 2001 4:51 PM
Subject: ISDN in Home Lab?
> I need ISDN at home, I purchased all my routers, a cat 5505, a cat 3900, I
> am running low on funds and would like to try using a single ISDN line to
my
> home for the lab scenarios.. I have heard that this can be done, what I
> don't know is how? Can I use a standard phone line splitter to connect my
my
> 2 2610 BRI-U ports? Can I configure each to only use one SPID, will the
> calls properly route to CO and back? Or do I need an NT1 and 2 routers
with
> S/T ports. Has anyone done this, can most of the labs be simulated with
only
> one SPID per router?
>
> This is what I want to do:
>
> | | -------SPID1---WIC-BRI-U-| r1 |
> | co |-----ISDN-U----|
> | | -------SPID2---WIC-BRI-U-| r2 |
> ^
> Phone Splitter
>
>
> Thanks for any help you may provide! If anyone has a ISDN simulator for
> under $500 I'll buy it!
>
> Cassidy.
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