Introduction
The Black Box DSL Discovery device is targeted at the organization of high-rate access to Internet or at the
integration of LANs. The 2B1Q line encoding is used to transmit information over a twisted pair. The Black
Box DSL Discovery device ensures organization of communication over one or two twisted pairs. The device
provides transmission rates in the range from 192 Kbit/s to 4640 Kbit/s. The parameters of the device are
stored in the NVRAM with the help of a PC. The
10/100Base-T
interface is used as a user’s interface. The
device can operate in the transparent bridge mode with the dynamic accumulation of MAC addresses.
The device is designed to organize a digital channel at the central office side and to connect this channel
with the Black Box DSL Discovery external unit installed on the customer premises side. It is also possible to
interconnect two stand-alone modems, for example, for the organization of communication between LANs.
The modems support uploading of new firmware versions using the Monitor port.
Date 21.10.03
page 5 of 29
