Nortel 22 Button Add-on Module for M2616

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Expansion module connects to M2616 to provide 22 additional buttons for line/extension display.
Features:
- 22 keys for any combination of lines and features Up to 2 expansion modules can be supported
- Can be used with the M2616
- Requires one of the following:
- Single footstand (7801xx) for one add-on
- Double footstand (7802xx) for 2 add-ons
- Compatible with the following foot stand:
- Aastra Foot Stand for 1 - M522 Expansion Modules (Model # P07801)
- Nortel Foot Stand for 2 - M522 Expansion Modules (Model # P07802)