Comsphere 392Xplus Models; Model 3920Plus Standalone Singleport Modems; Model 3920Plus Standalone Multiport Modem - Paradyne COMSPHERE 3920PLUS Technical Reference Manual

COMSPHERE 392xPlus Modems

COMSPHERE 392xPlus Models

The COMSPHERE 392xPlus modem is available in the following models:
• Model 3920Plus standalone singleport modem (model no. 3920-A1-xxx and 3920-A2-xxx).
• Model 3920Plus standalone multiport modem (model no. 3920-A1-40x).
• Model 3921Plus carrier-mounted singleport modem (model no. 3921-B1-01x).
• Model 3921Plus carrier-mounted multiport modem (model no. 3921-B1-00x).
A reference to 392xPlus modems refers to all 3920Plus and 3921Plus models.

Model 3920Plus Standalone Singleport Modems

The Model 3920Plus singleport (Figures 1-1 and 1-2) is a standalone modem capable of either
4-wire/2-wire leased-line or dial operation. This modem is controlled using either AT commands
or the DCP. The DCP consists of a liquid crystal display (LCD), three function keys, four
directional keys, and a row of 13 LED status indicators. For a better understanding of DCP
operation, refer to Chapter 3,
STATUS
INDICATORS
1-2
DCP
DIAGNOSTIC
CONTROL
PANEL
LCD AND
KEYPAD
LEASED
DIAL
DTE 1
NMS
POWER IN
Figure 1-1. 3920-A2 Standalone Modem
October 1998
Operation.
POWER
SUPPLY
POWER
ON/OFF
3920-A2-GH30-40