Chapter 3. System Features
Back-up battery unit (VB-44025)
Any device connected to the System but that does not derive its power from the System must
have a backup power source to operate. These devices include any System Message Detail
Recording (SMDR) printer (or recorder), fax machine, answering machine, modem, cordless
Building Block Expansion Capability
The System is designed to support easy expansion. Each cabinet in the System supports 96 ports (12
flexible slots) as well as 2 option slots. Up to 6 cabinets may be installed in the System for a total of
Up to 2 expansion cabinets may be connected to a base cabinet. When a fourth cabinet is required,
another base cabinet is installed. Up to 2 expansion cabinets may be connected to the second base
This building block approach allows you to easily add equipment when needed without a major
interruption in service or a major delay.
In addition to the additional cabinets and related cabinet hardware/cabling required for
expansion, when the System is expanded the CPC card and/or TSW cards may need to be
upgraded as well. The CPC96 supports up to 96 ports. The CPC288 supports up to 288 ports and
should be combined with time switch card TSW288. The CPC-576 supports up to 576 ports and
should be combined with time switch card TSW576.
Built-In Voice Mail Unit
The System supports the Built-in Voice Mail Unit. This unit assists in providing reliable, effective
communications. This is a simple device that includes an automated attendant function and can be
used to record conversations (where permitted).
DBS 576 (USA), issued January 1999
Section 700 - Operation