The Avaya IP 406v2 is a base model that is capable of
holding 2-190 extensions. It can be used by itself for smaller businesses. Or,
it can be used as a base module that will stack on up to 6 expansion modules for
larger businesses. The Avaya 406v2 accepts all expansion modules that Avaya
makes for the IP Office. Once again, the latest release of the IP Office comes
with a 3-year warranty.
Avaya IP 412 Base Module
The Avaya IP 412 is strictly a base module only. The Avaya IP 412 was designed
for larger enterprises with up to 360 users. The Avaya IP 412 will also accept
any expansion module Avaya makes, but will stack on another 12 modules that can
be used for a variety of trunks, digital stations, and analog stations. Just
like the 406v2, the IP 412 comes with a 3-year warranty.