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Reference Guide for the Model XM128 ISDN Digital Modem
Contents ix
Chapter 10
Troubleshooting
Power-on Self-test ........................................................................................................10-1
Loopback Tests .............................................................................................................10-2
ISDN Loopback test (AT&T9) .................................................................................10-2
Loopback with Self-test (AT&T10) ..........................................................................10-2
B1/B2 Loopback with Self-test ...............................................................................10-3
The Diagnostic Command ............................................................................................10-3
Modem Reset .........................................................................................................10-4
Using The Embedded Protocol Analyzer ...............................................................10-4
Setting up the Embedded EPA ........................................................................10-5
Capturing the Protocol Data ............................................................................10-5
Analyzing the Captured Data ...........................................................................10-6
...............................................................................................................................10-8
Appendix A
Technical Specifications
General Specifications ................................................................................................... A-1
Appendix B
Security Functions
Security Types and Levels ............................................................................................. B-1
Level 1 Security ....................................................................................................... B-2
Level 2 Security ....................................................................................................... B-2
Level 3 Security ....................................................................................................... B-3
Setting and Modifying Passwords .................................................................................. B-3
Nonpassword Auto Callback Function ........................................................................... B-4
Appendix C
AT Command Set Reference
Operation Mode of the DTE Interface ............................................................................C-1
Simplex Mode .........................................................................................................C-1
AT Command Descriptions ............................................................................................C-2
Description of ATI3 Output ......................................................................................C-7