Lucent Technologies MERLIN Plus Release 2 System Manual page 196

group using a dial code:
To page a
Intercom.
Touch
1
Speakerphone or lift your handset.
Touch
2
Dial the code for the group you want to page:
3
70 = Page-All (all voice terminals in the system)
71 = group 1
72 = group 2
When you hear a beep, begin speaking.
4
Intercom
Speaker-
phone
70-72
MERLIN Plus System Features 5-77