Nortel Expansion Module for M3904 NTMN37BA66

Nortel Expansion Module for M3904 NTMN37BA66 Description:

The Key-based Expansion Module provides an additional 22 keys for any combination of lines and features, which can be added to M3904 and M3905 models. Up to two Key-based Expansion Modules can be added to each set for a total of 44 additional keys.

Nortel NTMN37BA66 Compatibility:

• Nortel Meridian M3904
• Nortel Meridian M3905