Avaya MERLIN MAGIX Maintenance And Troubleshooting Manual page 346

System Programming Basics
Figure 2-6. 4424LD+ System Programming Console Overlay
The function labeled Top Sys Prog on the MLX-20L console overlay does not appear on
the 4424LD+ console overlay. The 4424LD+ does not provide a fixed HFAI (Hands Free
Answer on Intercom) button for this feature; however, the HFAI feature can be
programmed onto a line button on the 4424LD+ telephone and then used for system
programming.
Console Overlay
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