AT&T MERLIN LEGEND Release 3.0 Programming Summary Manual page 161

Analog Multiline Telephone Without Built-in Speakerphone
(BIS) or Hands Free Answer Intercom (HFAI) Capability
Summary: Analog Multiline Telephones
Without BIS or HFAI Capability
Programmable by
Mode
Idle Condition
Planning Form
Factory Setting
Valid Entries
Inspect
Copy Option
Console Procedure
PC Procedure
System manager
All
Not required
Form 4b, Analog Multiline Telephone
Form 5a, Direct-Line Console (DLC): Analog
Data Form 1a, Modem Data Stations
All models of analog multiline telephones (except the
analog multiline display console) have BIS/HFAI
capability.
Extension numbers
Yes
No
Extensions BIS/HFAI
Exit
[F6] [F8] Type ext. no.
Dial ext. no.
Enter
[F10] [F5] [F5]
Telephones 10-13
Exit