AT&T Merlin II Feature Module 2 System Manual page 83

5-6 The Attendant Console
4 When you hear a beep, speak into your handset. (You hear a busy signal
if all the voice terminals in the group are busy.)
NOTE: The above group page codes are default codes. If the
MERLIN II system has non-CMS activity, some codes may have
undergone flexible numbering. If so, check the Master Planning Form
and the Group Page Planning Form to see what the new numbers are.
CMS does not operate properly with flexible numbering. If Group
Page will not work with the assigned flexible numbers; use the above
default codes. If Group Page doesn't work with either the flexible
numbers or the default codes, see your MERLIN II system
administrator.
To program other MERLIN II system features onto your own or your agents'
voice terminals, such as Last Number Redial or Saved Number Redial, see the
entry for that feature in Section 2, "Reference" of the MERLIN II System
Manual.