Cell Relay Archive

["ronald h. davis" <ronaldd@lucent.com>]

Paul Koning wrote:
> 
> "ronald h. davis" wrote:
> > ... (as
> > opposed to physical layer information contained in the sonet/pdh header
> > which are referred to as f1, f2, and f3 flows - although pdh has no f2
> > flow for what it's worth).
> 
> I assume you meant SDH not PDH?  If so, I'm puzzled, since my PHY chip
> data sheets describe all three without making any exception for the
> SDH case.  
>

sdh definitely does have line (f1), section(f2), and path(f3) flows.
multiplexing in pdh, however (e.g. ds-1 to ds-3), involves path 
termination.

-- 
  __  ______  __  / __/ |       lucent technologies, naperville il, usa
_/ (_(_) / (_(_/_/_(_/  .       ronald.h.davis@lucent.com
author of "atm for public networks" published by mcgraw-hill
     http://www.amazon.com/exec/obidos/ASIN/0071344764