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Cyclades-PR4000
Appendix A - Troubleshooting 149
4 Make sure any external modem, DSU/CSU, or interface equipment is properly connected and that the interface
configuration is correct. Many cables have the same connector, but are not interchangeable.
5 Make sure that the line (T1 or E1) is active. The menu command INFO=>SHOW STATUS will show the status
of each channel. A status of Not Synchronized could mean that the problem is related to the line. The line
provider should be able to test the connection. If, after testing the line, the not synchronized status persists,
try testing the T1/E1 ports as described later in this chapter.
6 Confirm that the interface configuration is correct and has been saved to either flash or run, and that the
Controller Menu parameters are correct. Compare the cable pinout to the connector pinout (shown in Appendix
B of the Installation Manual). Different standards exist and an adaptor may be necessary.
7 Place a call to the PR4000 and see if a modem is being allocated. The menu command INFO=>SHOW
DIGITAL MODEMS=>SHOW STATUS displays the status of each modem and related information. This
information is also available using the CyROS Management Utility or the LCD display on the front panel. See
chapter 3 for more information on using CyROS.
8 Setting the menu item CONFIG=>SYSTEM=>SYSLOG to level 7 will cause the syslog to show if incoming
calls are reaching the PR4000. The menu INFO=>SHOW STATISTICS may also show useful information.
9 Many problems are due to an incorrect configuration of the switch on the part of the line provider. See
chapter 2, What is in the Box, for guidance in the solution of problems of this type.
Testing the Ethernet Interface.
The simplest way to test the link is by using the ping application. (If the Ethernet Interface appears to not be
working, it will be necessary to connect the console cable and access CyROS using a Computer or terminal.)
From the main menu, choose APPLICATIONS =>PING. Enter the IP number of a host on the network for the
HOST parameter and accept the preset values for the rest of the parameters. The output on the screen should
appear as shown below.