[c-nsp] Interconnecting two T1s with C-DS3

[Patrick Bohannon]

Yep, if it's just clocking and cabling, I think this is a go!

Thanks for your reply. 

> -----Original Message-----
> From: Jay Hennigan [mailto:jay at west.net] 
> Sent: Friday, March 04, 2005 3:16 PM
> To: Patrick Bohannon
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Interconnecting two T1s with C-DS3
> 
> On Fri, 4 Mar 2005, Patrick Bohannon wrote:
> 
> > There's probably a very obvious answer to why this wouldn't 
> work, but 
> > the question was posed by a client so I thought it was worth asking.
> >
> > We have channelized DS3s from our NOC to two different 
> geographic areas.
> > Our client has branch offices in each location and the goal is to 
> > connect the two.
> >
> > Is it possible to order two T1s local to each office's serving CO, 
> > have them ride channels back to our NOC, and cross-connect them 
> > somehow?  At the NOC, there would be no equipment other 
> than MUX->Patch Panel->Patch Panel->MUX.
> > The CSU/DSU on each end would be client located.
> 
> Yep, should work fine.  You'll need a T-1 crossover cable 
> between the two MUXes.  Pair 1,2 crosses to pair 4,5.  
> Clocking on the circuit will
> *probably* be sourced by the MUXes, but you may want to 
> verify this to ensure that the circuit has exactly one clock 
> source.  Are the MUXes tied to a building or network clock at 
> your NOC?
> 
> > To make it a more Cisco-centric post, should I be thinking of 
> > utilizing another branch-office technology instead of trying to 
> > finagle this?  Perhaps we could leverage our Cisco routing 
> infrastructure to make this work?
> 
> Heck, it's a layer 1 project at this point.  :-)
> 
> --
> Jay Hennigan - CCIE #7880 - Network Administration - jay at west.net
> WestNet:  Connecting you to the planet.  805 884-6323      WB6RDV
> NetLojix Communications, Inc.  -  http://www.netlojix.com/
>