AT&T MERLIN LEGEND Release 3.0 System Programming Manual page 558

Optional Group Features
Summary: Group Calling Line/Trunk or Pool
Assignments
Programmable by
Mode
Idle Condition
Planning Form
Factory Setting
Valid Entries
Inspect
Copy Option
Console Procedure
PC Procedure
4-208
Programming Procedures
System manager
All
Not required
Form 7d, Group Calling
Not applicable
Line, trunk, or pool number
Yes
No
Extensions → More → Grp Calling → Line/Pool → Dial
calling group ext. no. → Enter → Dial line/trunk no. → Enter
→ Exit → Exit → Exit
[ F6 ] → [ PgUp ] → [ F4 ] → [ F10 ] → Type calling group no. → [ F10 ]
→ Type line/trunk no. → [ F10 ] → [ F5 ] → [ F5 ] → [ F5 ]