EDAC Installation Guide
512-1090-001, Revision K0
Page 13 of 56
CHAPTER 1
— Product Description
Overview
The Expandable Digital to Analog Convertor (EDAC), shown in Figure 1, allows users
with Nortel, Lucent, NEC, Panasonic, Ericsson, Alcatel, Iwatsu, or Aspect digital
telephone systems to record conversations onto standard analog recording equipment.
In operation, the EDAC passively captures both sides of the telephone conversation and
sends the audio to the recorder only when a call is active.
The EDAC consists of a base unit and plug-in port cards, which allow a single EDAC to
handle up to twelve telephone lines. Optional relay cards may also be installed in the
base unit for recording systems which require contact closures to control start/stop
recording. DIP switches on the EDAC provide the flexibility to configure the system for a
variety of installations.
The EDAC utilizes a space saving design in a compact case measuring only 8 x 9.5 x
2.25 inches (20 x 24 x 6 cm). The unit can be installed as backroom equipment to
prevent unauthorized disconnection from the recording equipment. The EDAC case has
a flexible design which allows it to be mounted on a wall or within an equipment rack.
Figure 1. Expandable Digital to Analog Convertor (EDAC)
