[asterisk-dev] Re: TDMoE protocol

[James Harper]

> > . Is the data just exactly as it would come in from the interface?
> 
> Yes, the ethernet header is stripped off by the layer below.
> 
> > . Is there any indication of actual signalling format in the
protocol
> > (eg pri_net, pri_cpe)? The answer to the above question may obsolete
> > this one.
> 
> No, just like there isn't on a real E1 or T1. You just make sure both
> ends are set up compatibly.
> 
> I didn't have much success trying to run pri_cpe or pri_net, since
they
> put HDLC data in a channel, which is too susceptible to lost packets.
> Best to stick with a simple CAS or Robbed Bit signalling protocol.

Assuming no hardware issues, do you ever actually get lost packets on
the lan? And if you were using pri_cpi and someone pulled the plug on
the nic for a few seconds (eg not just 1 or 2 dropped packets), what
would happen? How long would re-synchronisation take?

Just to clarify, as I'm not sure I totally understand, if you had a
E1<->TDMoE bridge, would the TDMoE packets contain exactly the same data
as came out of the E1?

Thanks

James