Avaya Communication Manager Administrator's Manual page 648

Telephone Reference
Figure 253: 8410D telephone
Figure notes:
1. Handset
2. Dial pad
Note:
The 8405D and 8405D+ look like the 8410D with the exception that the 8405
Note:
series do not have the second column of line appearances.
648 Administrator Guide for Avaya Communication Manager
3. 10 programmable buttons