8018653 1.1 Troubleshooting • 4-9
Start
Check E1 cabling from the back of the BSC to
the patch panel rack.
Problem
solved?
Yes
No
System is
operational.
Remove unused CCPs, CAPs, and STMs
from BSC and unplug associated CAP
and re-insert into the slot.
Problem
solved?
Yes
No
System is
operational.
Swap out the
associated CCP card
with a functional CCP
or CAP.
System is operational.
Problem
solved?
Yes
No
Swap out the
associated CAP with a
functional CAP or CCP.
System is
operational.
Problem
solved?
Yes
No
System is
operational.
Remove unused E1 cards
from BSC.
Problem
solved?
Yes
No
System is
operational.
Unplug associated CCP and
re-insert into the slot.
Problem
solved?
No
Yes
Unplug associated CAP and
re-insert into the slot.
SUDs
completed
properly?
No
Yes
Perform the steps
listed in section 4.3,
"Startup
diagnostics
procedure" on
associated CCP,
CAP, and T1 cards.
Write the Error Code
on the malfunction
report, then refer to
chapter 5,
"Maintenance,"
section "Replacing
BSC circuit modules"
to replace the CCP.
Swap out the
associated E1 card
with a functional E1
card.
Problem
solved?
Yes
No
System is
operational.
Flowchart 4-8. You are unable to establish E1 lines