
Accessories
Accessories
This chapter describes optional features that can be used together with your BusinessPhone telephone.
Expansion key panel
Note: Only available for Dialog 4222 Office.
Each key panel offers 17 additional keys for storing of your most frequently used telephone numbers and functions, and for supervising extensions. Your telephone can be expanded with one key panel.
Note: One key panel of type DBY 419 01 can be connected to the Dialog 4222.
| Option unit |
| Dialog 4222 Office |
| The Option unit DBY 420 01/1 is an optional accessory, to be |
| installed on the bottom of your telephone set. The following devices |
| can be installed via the Option unit: |
| • Extra bell or busy indication outside your door |
í*1 | To check or set the option unit for extra bell or for busy signal: |
Press and hold simultaneously until a ring signal is heard. | |
The display shows: |
98 | BusinessPhone – Dialog 4222 Office / Dialog 3211 & 3212 |