AT&T MERLIN LEGEND Release 3.0 System Programming Manual page 521

Telephones
NOTES:
1. You cannot change the factory setting for Call buttons assigned to QCC
operator positions, and you cannot assign Ring, Voice, Originate Only, or
Shared buttons to QCC operator positions.
2. System Access or Intercom buttons can be assigned only to the first 10
buttons on a telephone.
3. You can assign a combination of up to 10 System Access or Intercom
buttons to each telephone (excluding QCC operator positions).
4. You can remove System Access or Intercom buttons, but at least one must
remain on the telephone.
5. Each System Access Ring or Voice on an individual telephone can be
assigned as a Shared System Access (SSA) button on up to 16 other
telephones.
Release 3.0 and later
Each System Access Ring or Voice on an individual telephone can be
assigned as a Shared System Access (SSA) button on up to 27 other
telephones.
6.
System Access and Intercom buttons are centrally programmed and cannot
be programmed by individual telephone users.
Summary: Assign Intercom or System Access
Buttons
Programmable by
Mode
Idle Condition
Planning Form
System manager
All, but note differences in factory settings.
Telephone idle
Form 4b, Analog Multiline Telephone
Form 4d, MLX Telephone
Form 4e, MFM Adjuncts: MLX Telephone
Form 4f, Tip/Ring Equipment
Form 5a, Direct-Line Console (DLC): Analog
Form 5b, Direct-Line Console (DLC): Digital
Form 5c, MFM Adjunct (DLC)
Data Form 1a, Modem Data Station
Data Form 1b, 7500B Data Station
Programming Procedures
4–171