AT&T Merlin 1030 User Manual page 47

NOTE: If you plan to program other features when you program
Automatic Line Selection, you must program Automatic Line
Selection first. If you are already in the middle of a programming
session, slide the T/P switch to center and then back to P before
programming this feature.
Slide the T/P switch to the P position.
Dial **.
Touch the line buttons in the order you prefer.
Slide the T/P switch to the center position.
NOTE: If you dial ** and then do not touch a line button, Pool
Access button, or Intercom button, you cancel Automatic Line
Selection.
+ +
**
555-1234 +
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