Specifications

System Specifications 3-29
External Connections
— Ethernet port
The Ethernet management RJ-45 port can be used to connect a management workstation and
enables SNMP management of the LightStream 1010 switch.
• Feature card
The feature card is a daughter card of the ASP module and implements a number of value-add
capabilities over and above the base switch mechanisms.
• Port adapter module carrier
The port adapter module carrier (CAM) can be installed in any slot, except slot number 2, in the
LightStream 1010 and allows any combination of port adapter modules (PAMs) to be installed
with a maximum of two PAMs per CAM. Port adapters are numbered 0 and 1, with 0 on the left,
facing the rear of the switch.
— 155-MM port adapter module
Provides connections for four multimode fiber optic interfaces using four duplex SC
connectors.
— 155-SM port adapter module
Provides connections for four single-mode fiber optic interfaces using SC connectors.
— 155-UTP port adapter module
Provides connections to four UTP interfaces using RJ-45 connectors.
— DS-3 port adapter module
Provides connections to two DS-3 interfaces using BNC coaxial connectors.
— E3 port adapter module
Provides connections to two E3 interfaces using BNC coaxial connectors.
— 622-SM port adapter module
Provides a connection to an OC12 interface using a duplex SC, single-mode, fiber optic
connector.
— System backplane
The high-speed backplane operates at 5 Gbps. The backplane provides the connection
between the power supplies, the ASP, the port adapter modules, and the backbone. The
backplane slots are numbered 0 through 4, with 0 at the top of the card cage and 4 at the
bottom.
Power Supply Requirements
The LightStream 1010 ATM switch comes equipped with one 350W AC-input power supply. An
optional second power supply, identical to the first, can be added for redundant power. Dual power
supplies are automatically load sharing and redundant, which means that a second power supply can
be installed or replaced without interrupting system operation.
When two power supplies are installed and both are turned on, each concurrently provides about half
of the required power to the system. If one of the power supplies fails, the second power supply
immediately ramps up to full power to maintain uninterrupted system operation. Load sharing and
fault tolerance are automatically enabled when the second power supply is installed; no software
configuration is required.