[c-nsp] Ethernet over T1 solution

[Matthew Crocker]

Justin,

  What you want is Ethernet in the First Mile (EFM).  I have a Zhone  
MALC 723 in my lab running bonded EFM over DS-1 to their TNE-1520  
CPE.  Works like a charm.  I can map DS-1s into VLANs or run dot1q  
trunks over them.  The 723 can also do some basic IP routing,  I  
*really* wish it supported OSPF.  Great box,  one cool thing is you  
don't need a router at the customer premise.  The TNE hand-off is  
FastEthernet and you can plug it directly into their firewall (yeah, I  
know a firewall is a router...).    I also have some Paradyne  
IPD12000E chassis (now part of Zhone) in production with the same TNE  
at the customer premise.  Also works great.  I wouldn't buy the  
IPD12000 now because Zhone has all  the capabilities in the MALC and  
that is their primary chassis.

A MALC 723 can handle 480 DS-1s when it is fully loaded.  Bonding can  
only happen when all DS-1s are on the same card, hopefully that will  
change in the future.  It has a metallic test interface bus so you can  
cross the DS-1 out the front of the chassis and plug it into a test  
head-end.  Great for testing DS-1s from the LEC before rolling your  
install crew.

-Matt



On Nov 8, 2007, at 9:55 PM, Justin Shore wrote:

> Does anyone have any suggestions for a scalable and inexpensive  
> Ethernet
> over T1 solution?  By scalable I mean able to bond multiple T1s as  
> well
> as some sort of solution on the CO-end for either mapping individual
> bonded connections into a VLAN or something.  I expect to start  
> rolling
> out many more T1s in the near future to replace slow and less reliable
> DSL and cable connections.  Currently we have so few business T1s  
> that I
> can terminate them individually but I expect a lot more in the future.
> I would also like to be able to offer our customers an option other  
> than
> buying or leasing a router with a T1 interface.
>
> Allied
> Anda
> Zhone
> RAD
>
> Any other recommended options?  I see a number of options that  
> involve a
> device on either end of a TDM link but I have yet to find one where  
> the
> CO-end is scalable to cover multiple CPEs.
>
> Thanks
>  Justin
>
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