Chapter 1. Introduction
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ESU LT User Manual
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run during normal operation to confirm continued correct
functioning. The background tests include:
•
Monitoring the phase-locked loop for lock.
•
Standard background network performance monitoring.
Loopback Tests
A number of different loopbacks can be invoked locally from
the front panel, by T-Watch commands, or remotely using
V.54 loopback code.
Network Loopbacks
There are two types of network loopbacks. See Figure 1-4.
Payload Loopback
Similar to line loopback, except that the framing is extracted
from the received data and then regenerated for the
transmitted data.
Line Loopback
Loops all of the received data back toward the network. The
transmitted data is the identical line code that was received,
including any bipolar violations or framing errors.
Figure 1-4. Network Loopback Tests
ESU
E1
Summary of Contents for 200410L1
Page 1: ...ESU LT User Manual Part Number 1200410L1 Document Number 61200410L1 1A June 1999 ...
Page 8: ...viii ...
Page 14: ...Table of Contents xiv ESU LT User Manual 61200410L1 1 ...
Page 18: ...List of Tables xviii ESU LT User Manual 61200410L1 1 ...
Page 28: ...Chapter 1 Introduction 1 10 ESULT User Manual 61200410L1 1 ...
Page 44: ...Chapter 4 Status Menu 4 6 ESULT User Manual 61200410L1 1 ...
Page 56: ...Chapter 5 Configuration Menu 5 12 ESU LT User Manual 61200410L1 1 ...
Page 72: ...Chapter 8 Example Operations 8 6 ESULT User Manual 61200410L1 1 ...
Page 90: ...Index Index 6 ESU LT User Manual 61200410L1 1 ...
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