user manual

ND-20292
CHAPTER 5
APRIL, 1990
Call Dropping
No
Yes
I
Check tosee if all lines
dropatthesametime
I
Have Telco check the line
Check COI-E LED
Have Telco check
line circuit(s)
1. Perform Second Initialization;
if trouble persists,
THEN
2. Replace COI-E( ) ETU, retest; if
trouble persists
THEN
3.
Replace TSW-E( ) and Test
500 -11