Multi-Tech Systems Hub manual SBC Board Cabling

Chapter 2 - Installing Your CommPlete 4000

If the ISI4608PCI or ISI4608UPCI is used, connections between it and external modems are made via the supplied octopus cable going between the DB-78 connector on the ISI4608PCI board and the DB-25 connectors on the individual modems. (RJ-11 connectors connect the modems to the phone jacks.)

If the ISIHP-4S or -4U are used, each ISIHP card accepts as many as four RJ-45 connectors to accommodate ISDN BRI lines. (The modem connections that accommodate analog calls are internal to the ISIHP board. That is, when the V.90 modem module is installed, each ISDN B-channel connects to a V.90 modem via a digital connection. These digital connections allow analog callers using 56K modems to receive 56k downloads from the ISIHP’s modems.)

The SBC board has cable connectors for adding a monitor, a keyboard, and a mouse or other serial device (on COM1), and network connection. Cable connectors and boards are shown in Figure 2-1.

Cover Mounting
Screws	ISI Boards

Cover	MODEM Line		MODEM Line		MODEM Line		MODEM Line
1-4		5-8		1-4		5-8

120

Power Supply SBC Backplane

Figure 2-1. Back Panel Connectors

SBC Board Cabling

COM 2 (DB15)

Printer Port (DB25)

The SBC board is located in the CommPlete 4000 as shown in Figure 2-1. The SBC board cabling may involve connection to four back panel connectors (see Figure 2-2). The back panel connectors are:

•Video connector

•COM 1 connector

•Keyboard connector

•Network connector

SBC Board
6-Pin Circular Jack	DB9 (male) Connector
	(to COM 1 Serial Port)
(To External Keyboard)
	RJ45 Connector
15-Pin Video
Connector	(to Network Hub)
(to External
Display Monitor)

Fig. 2-2. SBC Backplane Connections

The right connector (COM 1) on the SBC’s backplane typically accommodates a mouse or other pointing device. The middle receptacle connects the video cable to a monitor. The left round connector is for the keyboard. The SBC connector pinouts are shown and defined in Appendix A.

Note: Any cables connected to the CommPlete 4000 should be shielded to reduce interference.

CommPlete 4000 Communications Server User Guide 9