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Chapter 2: Introduction
2. Introduction
2.1 Overview
The Remotely Controlled Layer 1 A/B Switch, Fiber is available in four models (SW1042A-MM, SW1043A-MM, SW1044A-SM,
SW1045A-SM). All models provide the same basic A/B switch functionality which is to connect port A or port B to the C
(Common) port, through fiber optic (SW1042A-MM, SW1043A-MM, SW1044A-SM, SW1045A-SM) switch mechanisms.
Manual control of the switch port connection state is supported through pushbutton switches on the front of the unit.
A 6-position pluggable terminal block connector on the rear of the unit provides remote control capability and accepts external
dry contact closures as inputs. See Section 5.1 and Section 5.2 for additional details.
2.2 Available Models
• Remotely Controlled Layer 1 A/B Switch, Fiber Multimode, SC (part number SW1043A-MM)
• Remotely Controlled Layer 1 A/B Switch, Fiber Multimode, SC, Ethernet, RS-232 (part number SW1042A-MM)
• Remotely Controlled Layer 1 A/B Switch, Fiber Single-Mode, SC (part number SW1044A-SM)
• Remotely Controlled Layer 1 A/B Switch, Fiber Single-Mode, SC, Ethernet, RS-232 (part number SW1045A-SM)
Models with Serial control capability (SW1042A-MM, SW1045A-SM) include an RS-232 console port that can be used to control
the switch port connection state, as well as monitor switch status using a serial RS-232 terminal type device. See Section 5.3 and
Section 7 for additional details.
Models with Ethernet control (SW1042A-MM, SW1045A-SM) include an Ethernet network interface that can be used to control
the switch port connection state, as well as monitor switch status via a web browser, telnet, or using SNMP. These models also
have intelligent automatic switching capabilities, and they support sending SNMP traps or syslog messages (user configurable) for
various events and errors. See sections 5.4, 5.5, 7, 10, and 11 for additional details.
