I know this is a longshot...
I've Googled my head-off in looking for a way to get into this switch via the serial console, and found the usual "secure/secure" and "user/ user" combo. I can get in via read-only by "user/user" however, I still don't have a writable username and password combo. I've also tried the "NetISc" attempt to no avail.
Does anyone have a solution that doesn't involve shelling out $300 per incident to Nortel over a router I only paid $15 for? If not, this doesn't bode well for my further purchasing decisions for my company over Nortel hardware.