Nortel Phones Activate Main CO Lines Posted on January 24, 2018 by Bulldog Tech Nortel Activate Main CO Lines To activate Incoming CO lines on a Nortel System:Feature: **266344 Password: 266344 Terminals and Sets Show 001 Add Copy to 002, 003, 003… For every phone system Label each line: Line 1, Line 2… Post navigationPrevious post: Medical Emergency – Allscripts was hacked!Next post: Nortel MICS/CICS Phone System Programming Caller ID