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RACK NEST 2/14
2.1 Introduction
The Rack Nest 2/14 is a 19-inch, 4U-high rackmount modem card nest. It
accommodates up to fourteen plug-in cards. The Rack Nest 2/14 provides a
reliable concentration point for multiple baseband links supporting last-mile
or campus applications.
Any combination of modem cards can be installed. Cards are hot-swappable,
which means they can be removed or inserted during operation without
interfering with the operation of other cards.
Each power supply supports a full rack of cards, regardless of the type. The
RM110A-2PS comes with two separate power supplies that back up one
another in case of failure. Each power supply is hot-swappable.
The rear panel consists of fourteen 5-screw, snap-type terminal blocks and
fourteen DB25 connectors (one terminal block and one DB25 connector
per card). The terminal blocks connect the transmit and receive lines. The
transmit pair is connected to the terminals marked XMT, the receive pair is
connected to the terminals marked RCV, and an optional ground connection
is the fifth screw. The DB25 connectors are interface connectors, and they
provide all interface signals for the digital interfaces.
2.2 Features
• High-density 19-inch modem rack.
• Any combination of up to 14 modem cards.
• House fiberoptic and copper-wire modems in a single nest.
• Allows hot-swapping of cards and power supplies.
• 2PS model has separate power supplies for full redundancy.
• 4U high.
2. The Rack Nest 2/14
