Nortel Networks M3110 - Manual (Page 337)

Appendix A: Meridian Modular Telephones Page 337 of 504
Telephones and Consoles Description, Installation, and Operation
Key Expansion Module
A modular 22-key unit can be attached to any 16-key Meridian Modular
Telephone except 2016S. See Figure 55. The extra keys can be assigned to
any combination of lines and features. You can add up to two expansion
modules to a single telephone, providing a total of 60 line/feature keys. You
will need a separate footstand for the module(s), one for a single module, one
for a double. The expansion module requires additional power. See “Power
requirements” on
page 345 .
The Key Expansion Module connects to the telephone through a ribbon cable
running from the base of the telephone. It is physically connected to the
telephone by the footstand. NT2K22VH or later vintage key lamp modules
are required for CISPR22, Class B compliance.
Figure 55
M2616 with Display Module and Key Expansion Module
553-AAA0730