Harris Stratex Eclipse 4.6 User Manual page 48

Chapter 1. System Overview
IDU 300 20xV2 can be over-air interfaced to an Eclipse Node comprising the INU, DAC
16x and ODU 300. An AUX is included where auxiliary channel services are also
required. This applies only to non-protected 1+0 (20xE1 / 16xDS1 max) link operation.
Where 1+1 IDU operation is required, protected IDUs must be installed at both link
ends.
IDUsp 16x and IDUsp 4x
These IDUs are cost optimized for basic E1 services:
• IDUsp 4x: 4xE1 with QPSK modulation.
• IDUsp 16x: 4x, 8x, 16xE1 with QPSK modulation.
Figure 1-4.
Paired IDUsp 16x IDUs support hot-standby operation; Tx and Rx switching is not
hitless. The IDUsp 4x is not protectable.
A single 64 kb synchronous auxiliary data connection is included; there is no alarm I/O.
IDUsp requires an ODU 300sp or ODU 300hp; ODU 300ep is not supported.
NMS connection is Ethernet-only; there is no serial interface for Portal PC connection.
Instead the IDU is configured as a DHCP (Dynamic Host Configuration Protocol)
server and the Portal PC as a client.
IDU 155o
IDU 155o supports a single 155 Mbps STM1/OC3 tributary on optical SC connectors.
Modulations options are 16, 64 or 128 QAM.
Figure 1-5.
IDUs are paired to support 1+1 hot-standby or space diversity operation. Optical Y
cables are used to provide common Tx and Rx interfaces.
• Tx switching is not hitless.
• Rx switching (voting) is hitless (errorless).
Synchronous or asynchronous auxiliary data and alarm I/O options are included.
Requires ODU 300hp or ODU 300ep.
IDU 155o can be over-air interfaced to an Eclipse Node comprising the INU, DAC 155o,
2x155o, or 2x155e, and ODU 300. An AUX is included where auxiliary channel services
are also required. This applies only to non-protected 1+0 link operation. Where 1+1
IDU operation is required, protected IDUs must be installed at both link ends.
IDU ES
IDU ES supports Fast Ethernet to 200 Mbps to provide an uncomplicated and cost
effective alternative to fiber. Its Layer 2 switch supports four customer 10/100base-T
ports, two over-air transport channels and comprehensive QoS options.
Vol. II-1-4
IDUsp 16x
IDU 155o
Harris Stratex Networks