ShoreTel BB24 Button Box Power:Add Power Injector The 1200222L1 provides 128 controllers

The 1200222L1 provides 128 controllers at 56 / 64 Kbps channels

Replacement bases for the newer IP400 series phones can be found here - Shoretel IP400 Replacement Phone Base (420

The card is perfect for connecting analog phones to a T1 or PRI circuit or converting a digital circuit to analog lines for a phone system

The 4200321L2 is a redundant system

ShoreTel BB24 Button Box Power:Add Power Injector The 1200222L1 provides 128 controllersShoreTel BB24 Button Box Description: The Shoretel Button Box is a programmable expansion console with self labeling keys. The BB24 provides 24 additional lines that users can select with the push of a button. In addition to programming the buttons as lines, each programmable button can be set up as additional features instead. The button box can either be powered via the power of an attached phone or through the use of an optional power injector.