Sorry for the OT post. Figured I'd float this here and see if any one might be able to help.
Does anyone really know where the 50 ms SONET detect/fail-over time comes from? I've heard many answers, but none seem to be verifiable. I'm looking for pointers to docs which explain where or what drove the 50 ms number. I've heard that: * 50 ms was a requirement to support voice. The way this one is told is that more than 50 ms of noise/nothingness seriously impacts MOS. Not sure I buy that. * Old telco switches would go bonkers if many T1's started to flap a the same time. 50ms at the SONET level prevented the T1s from flapping. * others, etc. Again, looking for docs / pointers which details the answer. Thanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55700&t=55700 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
