AT&T 8503T - Manual (Page 31)

Quick Reference Lists
Feature Codes
Feature Code
ABBREVIATED DIALING
List 1
List 2
List 3
Program
AUTOMATIC CALLBACK
Cancel
CALL FORWARDING
ALL CALLS
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Feature Code
CALL PARK
Answer Back
CALL PICKUP
LEAVE WORD CALLING
Cancel
PRIORITY CALLING
SEND ALL CALLS
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VOICE MESSAGE RETRIEVAL
Coverage