Paradyne 392xPLUS operation manual Modems Back Connector Plates

Modem Installation

SDU is required when the modems in the carrier are controlled by an NMS, or when multiple carriers in a cabinet configuration are to be controlled by a single shared diagnostic control panel (SDCP). The SDCP of the COMSPHERE 3000 Series Carrier is the user interface to the Model 3921Plus modem. A single SDCP can control up to eight carriers.

The installation of a Model 3921Plus modem varies slightly if an SDCP is installed on the front of the carrier. To install a Model 3921Plus modem into the carrier without an SDCP, perform the following steps:

1.At the back of the carrier, install the connector plates (Figure 2-2). Make sure the plate(s) use the same slot positions as that intended for the modem.

Loosely fasten the plate(s). This allows for slight adjustments later when installing the modem.

2.At the front of the carrier, hold the modem vertically, with the latch on its faceplate in the open position, and insert it into the top and bottom card guides of one of the slots numbered 1±15 (Figure 2-3).

Slide the modem into the slot, aligning the modem with the connector plates, until the backplane connector and DTE connector seat firmly into the back of the carrier. The faceplate latch automatically closes as you push the modem into the carrier. To lock the modem into the carrier, press the faceplate latch until a ªclickº is heard.

3.If the carrier is ON, the Power LED on the faceplate of the Model 3921Plus lights. After several seconds the modem completes its power-up self-test, in which all faceplate LEDs light.

Return to the back of the carrier and tighten the connector plate(s).

MULTIPORT

BACK

CONNECTOR PLATES

DTE A DTE A

DTE B DTE B

SINGLEPORT

BACK

CONNECTOR PLATE

EIA232/V.24	EIA232/V.24
	CONNECTOR

RS366A/V.25(3800)	V.35 (3600/3500)
	FUTURE USE

495-14696

Figure 2-2. Modem's Back Connector Plates

3920-A2-GN31-30 November 1996 2-7