3-13910-A2-GN32-40 September 1998
DCP Operation
Overview
This chapter describes how to use the diagnostic control panel (DCP) of the 391x Series modem. It
also describes how to select and use each branch of the Top-Level menu tree.

Diagnostic Control Panels

There are two types of diagnostic control panels (DCP), the DCP on the standalone Model 3910
modems and the shared diagnostic control panel (SDCP), an optional feature, used with the
Model 3911 installed into a COMSPHERE 3000 Series Carrier. Both DCPs have a two-line,
32-character liquid crystal display (LCD) and keypad through which Top-Level menu branches are
accessed to perform the following:
•Check modem status
•Set up configuration options
•Initiate diagnostic tests
•Initiate and disconnect dial operations
•Access remote modems through the local modem’s DCP
The LCD displays the result of any command initiated using the DCP. Most of these operations can
be performed from an attached asynchronous DTE using the AT command set.
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