Chapter 7. Test Menu
58
ESU LT User Manual
61200410L1-1B
Network Tests
Network tests are used to control the activation of loopbacks
and the initiation of data test patterns.
The network tests are run on the network interface (NI). Three
different test configurations can be selected to determine the
type of loopback and the pattern to run. Test results are
displayed in the LCD window. See Figure 7-2.
Figure 7-2. Local Loopback Screen
Loopback Tests
A number of different loopbacks can be invoked locally from
the front panel, by T-Watch commands, or remotely by using
special in-band codes (AT&T D4 network loop-up and
loopdown codes). Additionally, the loopbacks can be remotely
controlled by means of out-of-band commands by the E1 ESF
FDL or from T-Watch PRO via a modem connection.
Network Interface Loopbacks
Network interface loopbacks affect the entire E1 data stream
(see Figure 7-3 on page 59). The two types of network loop-
backs are described below.
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.
Payload Loopback
Similar to line loopback, except that the framing is extracted
from the received data and then regenerated for the
transmitted data.
Summary of Contents for 1200410L1
Page 1: ...ESU LT User Manual Part Number 1200410L1 61200410L1 1B February 2003 ...
Page 12: ...Table of Contents 12 ESU LT User Manual 61200410L1 1B ...
Page 14: ...List of Figures 14 ESU LT User Manual 61200410L1 1B ...
Page 16: ...List of Tables 16 ESU LT User Manual 61200410L1 1B ...
Page 20: ...Chapter 1 Introduction 20 ESU LT User Manual 61200410L1 1B ...
Page 28: ...Chapter 2 Installation 28 ESU LT User Manual 61200410L1 1B ...
Page 34: ...Chapter 3 Operation 34 ESU LT User Manual 61200410L1 1B ...
Page 40: ...Chapter 4 Status Menu 40 ESU LT User Manual 61200410L1 1B ...
Page 64: ...Chapter 7 Test Menu 64 ESU LT User Manual 61200410L1 1B ...
Page 79: ...Index 61200410L1 1B ESU LT User Manual 79 W wiring 69 ...