ADTRAN ATLAS 800 Series Module QUAD E1, User Manual, Page: 164 / 190

Appendix B. Troubleshooting
B-2 ATLAS 800 User Manual 61200180L1-1
Cannot pass data from T1 interface to V.35 port
Misconfiguration, improper cabling
• Verify that the T1 signal is being received. If not, check that the cabling
is correct.
• Verify that the T1 is being received without errors. If not, double-check
that framing and coding are set properly.
• Verify that desired dedicated map is active.
• Verify that bandwidth is mapped to the correct V.35 port.
• Verify that the V.35 port is set to the correct data rate (terminal inter-
face).
• Check T1 performance using the terminal interface; if excessive errors,
report fault to the Telco.
• Verify proper state of DTE signals via the terminal interface or the LCD
front panel.
Switched calls are not working
Misconfiguration
• Verify that the end point has proper call accept/reject criteria. For RBS
applications, check signaling bit status on the terminal interface for
proper operation.
• Verify that the end point is set up for correct signaling.
Cannot communicate with ATLAS USING VT-100
connected to the Control/Chain In Port
Misconfiguration, improper cabling
• Verify that ATLAS is receiving commands (press keys on terminal and
verify that the received byte count in the front panel increments).
• Check cabling, verify that the chain port rate matches that of the at-
tached terminal; check chain port status leads on the front panel.