the switch i usually work on is a sl1 opt 81, i've installed 40 81's and countless opt 11's.. started with nortel back in 78. i am also certified in a dozen other switches. mostly because the network side of the house knows data, cisco installs have went a lot cleaner then nortel voip. and i haven't played with voip on rls 4 yet. like everything else, if your confortable with a switch, it tends to be your favorite. i perfer rolm, but simmons trashed that switch. mitel, fugi nec all avaya all make good switches but for a large application, nortel would always be my choice. at this site we have 7000 plus stations interfaced with 5 offsite switches and 2 cisco call managers, mosttly used just for wireless. the roll out on those wnet almost unnoticed...
john poole
bellsouth business
columbia,sc