Chapter 1 - Introduction and Description
Back Panel Description
All the cable connections to the MultiFRAD are made at the back panel. Four categories of cables are used on the MultiFRAD: Ethernet, Channels, Command Port, and Trunk (RS232/V.35). The back panel connectors are shown in Figure
| ETHERNET |
10BASE T | AUI |
CHANNEL 2 | COMMAND PORT |
|
CHANNEL 1 | TRUNK (RS232/V.35) | POWER |
Figure 1-2. Back Panel
Ethernet 10Base-T Connector
The Ethernet
Ethernet AUI Connector
The Ethernet AUI (Attachment Unit Interface) connector is used to connect the MultiFRAD to a LAN using thickwire Ethernet cable. This connector is a
Channels 1 and 2 Connectors
The two Channel connectors are used to connect data devices to the MultiFRAD. A data device can be a synchronous device such as a multiplexer or an asynchronous device such as a PC. The data channels can be either RS232C or V.35 . If a V.35 connection is desired, then the internal shunt for that channel must be physically moved from its default RS232 position to the V.35 position.
Command Port Connector
The Command Port connector is used to configure the MultiFRAD using a PC with a serial port or terminal emulation. The Command Port connector has a DCE physical interface with a DB25 female connector.
TRUNK (RS232/V.35) Connector
The RS232/V.35 trunk connector is used to connect the MultiFRAD to a Frame Relay Network. The trunk connection is to a synchronous communications device such as a modem, DSU, or ISDN. This connection can be either RS232C or V.35. If the connection is V.35, then the shunt for that link must be moved from the default RS232 position to the V.35 position. This connector is a DB25 male connector.
Power Connector
The Power connector is used to connect the external power supply to the MultiFRAD. The Power connector is a
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