[nsp] What WIC to use with E1 service

[Lars Erik Gullerud]

On Mon, 2004-05-10 at 10:06, Neil J. McRae wrote:
>   
> > If the circuit is provided by Deutsche Telekom, "framed" is 
> > the better choice - DTAG claims they can't do remote 
> > troubleshooting on the unframed E1 lines, so each time the 
> > line has problems, fixing it will take much more time.
> 
> Must be a limitation of the hardware or if you are muxing
> channels you don't have a choice but to frame it.

This is very common among telcos that prefer to present V.35 or X.21 to
the customer rather than G.703. Typically they are using equipment like
e.g. the venerable Tellabs MartisDXX or similar, and these devices use a
management-channel (like the DCC in SDH) that piggybacks its bits on the
channel used for framing. So while these devices can usually be set to
unframed mode, you then loose your management channel and loose the
ability to see modem diagnostics, configure loops on the customer
premise box, etc.

/leg