ADTRAN DSU IV ESP, User Manual

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Chapter 1. Introduction
61204011L1-1 DSU IV ESP User Manual 1-5
TELNET
Telnet provides a password-protected, remote login facility to the
DSU IV. Telnet allows a user on a network manager to control the
DSU IV through the terminal menus. See Applications on page 4-1
and Terminal Menu Structure on page C-1 for more information.
DIAL BACKUP OPERATION
The DSU IV ESP's unique DBU cards are field-installable by the
customer. See Installation on page 2-1 for information on installing
DBU cards. All DBU cards are compatible with other ADTRAN ESP
products supporting DBU (see the following note). The three
backup options are described in the following sections. Contact the
local telco provider to determine which services are available in
your area. See Applications on page 4-1 for more information,
including an example of a dial backup application.
Although the ESP V.34 DBU (P/N 1204002L2) is compatible with the
DSU IV ESP, it is not compatible with the TSU ESP (P/N 1200169L1).