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Cyclades-PR4000
Appendix A - Troubleshooting 151
Use of a Cross Cable for Testing T1/E1 Ports and Modems
Two tests can be performed with the cross cable: one tests the two T1/E1 ports while the other tests the 2 ports
and the modems. The pin diagram of the cross cable is shown in Appendix B. Before starting the tests, connect
the two T1/E1 ports using the cross cable.
Testing the Two T1/E1 Ports
1. In the CyROS main menu, choose the following menu options: DEBUG =>HARDWARE TESTS=>HW DEBUG.
Choose to test ports T1/E1 2 and T1/E1 3. (Slot 2 is T1/E1 port 1 and slot 3 is T1/E1 port 2.)
2. In the T1/E1 2 Tests Menu, select Comm. Test (master).
3. In the T1/E1 3 Tests Menu, select Comm. Test (slave).
The screen output of the test should appear as shown in the following figure.
Daughter Boards tests statistics:
Slot 2 (E1) - Communication test:
Last Line Mode Status Bandwidth Clock
Status: Synchronized Master Fractional Slave
General statistics:
Sent: 3 packets/273 bytes.
Received: 3 packets/471 bytes.
No errors.
Slot 3 (E1) - Communication test:
Last Line Mode Status Bandwidth Clock
Status: Synchronized Slave Fractional Master
General statistics:
Sent: 3 packets/471 bytes.
Received: 3 packets/273 bytes.
No errors.