Avaya Communication Manager Administrator's Manual page 576

Phone Reference
7400-series telephones
Figure 83: 7406D+ telephone
Figure notes
1 Handset
2 Dial pad
576
3 5 programmable buttons
4 18 feature buttons (feature buttons F2, F4, and F12
to F18 are enabled with the Shift key)
Administrator's Guide for Avaya Communication Manager
November 2003