I have logged into the admin MB and set the serial port to MEM access from a PMS port. Still get error 21.

Steve, I'll look up using the MEM modem to see if I can get into it that way. I thought that the problem might be a password change from 8XX2.

Not sure how to reset the password to default (in case thats the problem). That may be something that I have to go to Mitel for?

Thanks for the reply guys. This forum has been helpful.