[nsp] Suggestions on terminating a bunch of T1's

Jim Devane jim at powerpulse.cc
Wed Feb 4 16:04:20 EST 2004

This is a response to everyone so far..

1) Thanks for all the positive comments suggestions! I thought I would be
black and blue from the clue bat.

2) No, unfortunately I get these in actual 4 pair. I know that really sucks.
And the question that follows is .. well, why not drag a  DS-3 out to the CO
and do it that way... I would in a flash but it is not feasible right now in
the design of things. Politics, executive decisions, stuff that is generally
out of the hands of the engineer = )

The 7500 platform is a great suggestion. The bummer part is the PA-MC-2T3 is
still kind of expensive ( even on successful auction sites ) 

I will definitely be looking more into the 7500 platform suggestion however!

I hope my own response does not stem the tide of replies however!

Thanks again,

-----Original Message-----
From: Richard J. Sears [mailto:rsears at adnc.com] 
Sent: Wednesday, February 04, 2004 12:55 PM
To: Jim Devane
Cc: cisco-nsp at puck.nether.net
Subject: Re[2]: [nsp] Suggestions on terminating a bunch of T1's

We currently terminate between 400 and 500 T1s utilizing two 7513s with
Dual RSP4s, Vip2-50s with PA-MC-2T3s and it works great. 

Is there any way to bring them native in on CT3s as opposed to copper
and having to run them through an M13...?

On Wed, 4 Feb 2004 15:47:22 -0500 (EST)
jlewis at lewis.org wrote:

> On Wed, 4 Feb 2004, Jim Devane wrote:
> >             I am attempting to design a fabric that will be able to
> > terminate 1100 T1's in one POP. I know, the good sense would suggest
> > the T1's be terminated at the individual CO's and then backhaul the IP
> > traffic to the POP but that is not politically a solution. So the
problem I
> > have is a slew of 4 pair T1's showing up at my cage. Here is what I have
> > thought of for solution but I am really looking for more sensical ways.
> > 
> > Current first place design.
> > 
> > Wrap the T1's into 40 M13's. 
> > Run the channelized DS-3's to a 7206 VXR full of PA-MC-2T3+
> > I would need 4 7026 and use one of the PA's for an uplink of some sort.
> > Kind of sucks but might be the cheapest way. 
> 3 7507 and a bunch of VIP2-50's and RSP4's would likely be even cheaper
> and perform better.  
> How much bandwidth will these T1's be using?  You'd need a GEIP+ for
> uplink in each 7507 if they might all run full T1.
> ----------------------------------------------------------------------
>  Jon Lewis *jlewis at lewis.org*|  I route
>  Senior Network Engineer     |  therefore you are
>  Atlantic Net                |  
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Richard J. Sears
Vice President         
American Digital Network                          
rsears at adnc.com
858.576.4272 - Phone
858.427.2401 - Fax

I fly because it releases my mind 
from the tyranny of petty things . . 

"Work like you don't need the money, love like you've
never been hurt and dance like you do when nobody's

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