Avaya/Nortel M3900 Key Expansion Module M3900DBA (NTMN67AD70E0)
Use the Page Key to navigate between the three layers. Then use the edit command (under the options menu), and the dial pad keys, to update the programmable 10 character key labels.
- Provides 22 additional line/feature keys for the M3904 and M3905 telephones
- A second KBA can be added for a total of 44 additional line/feature keys
- Includes 10-pin connection cable and KBA footstand
- Requires an M3900 series phone