
COMSPHERE 392xPlus Modems
Model 3921Plus Carrier-Mounted Singleport Modem
The Model 3921Plus is a
The modem's back panel has two edge card connectors that mount into a connector plate. This connector plate has two
Model 3921Plus Carrier-Mounted Multiport Modem
The Model 3921Plus is a
The modem's back panel has four edge card connectors that mount into two connector plates. Each connector plate has two
Both the singleport and multiport Model 3921Plus modems derive ac power from the COMSPHERE 3000 Series Carrier's backplane, which is a common bus to all devices installed in the carrier. The user interface to any Model 3921Plus modem is through the shared diagnostic control panel (SDCP), an optional feature which operates in a manner similar to the DCP on the Model 3920Plus modems. For a better understanding of DCP operation, refer to Chapter 3, DCP Operation.
November 1996 |