Instruction manual

61200780L1-1C © 2004 ADTRAN, Inc. 117
ATLAS 800 Series System Manual Quad E1/PRA Option Module
Test
Test
Write security: 4; Read security: 5
These options initiate different types of tests and display test results.
Prt Displays the port number.
Loc LB Causes loopback on near-end (local) port (see Figure 3). The following options
are available:
Pattern Test pattern to be transmitted out the port. The following options are available:
QRSS Results Test pattern results that indicate sync and errors of received data pattern.
Clr Clears test results on QRSS RESULTS field.
Inj Injects errors into transmitted test pattern. Return receipt of the errors is
displayed in the
QRSS RESULTS field.
Figure 10. E1/PRA Network Loopback Test Diagram
Options Description
None
No loopback active
Line
Metallic loopback
Options Description
All ones
Framed ones
All zeros
Framed zeros
QRSS
Pseudo-random pattern with suppression of excess zeros
E1/PRA
NI CSU
Line Loopback