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[HSSG] fault signalling


I am very interested in having new HSSG standard implement some kind of 
signalling equivalent to AIS, RDI etc which is present in SONET/SDH and 
which is very useful for fault-finding i WAN/DWDM applications where 
regenerators or transponders are used to indicate where the fault might 

Is it too early in the process to start discussing this? Since symbol and 
bit encoding is being discussed. I am under the impression that one could 
use non-data symbols out of 64b/66b to handle some of the signalling, thus 
I wanted to ask this early on in case this is the proper time, or if it 
should be done later.

I have quite a few ideas about what could be included, even if it's said 
to be optional to include (I don't know how this is usually done).

I am willing to try to put together a more structured list of suggestions 
if it's deemed appropriate at this time.

Mikael Abrahamsson    email: