E1/T1 and Voice Troubleshooting 6-1
Chapter 6 Troubleshooting and Diagnostics This chapter includes:
• General troubleshooting (see Table 6-1)
• E1, T1 and voice troubleshooting (see Table 6-2)
• Router connections troubleshooting (see Table 6-3).
6.1 General Troubleshooting
Table 6-1. General Troubleshooting
Trouble symptoms Possible cause Recommended Course of Action
All front panel indicators are
OFF
The unit is not receiving power Check that power is supplied to the unit.
Check the fuse and replace it if necessary.
READY indication is OFF There are less then two
interfaces UP
Check VIEW interface connection status
6.2 E1/T1 and Voice Troubleshooting
Table 6-2. E1, T1 and Voice Troubleshooting
Trouble symptoms Possible cause Recommended Course of Action
Local sync loss (for E1) or RED
alarm (for T1) indicator is ON
in the main link
External problem Check the E1/T1 cable.
Local sync loss (for E1) or RED
alarm (for T1) indicator is ON
in a sub link
External problem Check the E1/T1 cable.
SHDSL status remains in
‘handshake’ or ‘training’ mode
SHDSL and/or E1
configuration problem
• Check that SHDSL parameters of
the local and remote units are set
to the same values.
• Check that the same number of
timeslots are configured to carry
data.