Conversions: DLP-506 363-205-401
Page 4 of 6 Issue 7, March 1997
8.
NOTE:
The
NORM/CLEAR
switch option is used to automatically clear random
channel provisioning data stored in the
ADU
and
BCU
when the
BCU
is
installed by selecting
CLEAR
. After the
BCU
has been installed, the
NORM
position is used. The
CLEAR
position will not destroy channel
provision data if any special service channel unit is installed.
Set
NORM/CLEAR
option plug for
CLEAR
option (center and bottom pins).
9. Is system being converted from FPB Mode 1 to FPB Mode 2?
If
YES,
then continue with Step
10.
If
NO,
then proceed to Step
11.
10. When converting from FPB Mode 1 to FPB Mode 2, service interruption is
unavoidable. Have central office equipment perform the necessary procedures
to equip the system (in-service) before continuing. Ignore alarm indications
while the central office equipment is being prepared for conversion.
If convert-
ing to a Mode 2 system, remove LIU B and LIU D before the ADU is
installed.
11.
!
CAUTION:
Incorrectly set ADU option switches may result in immediate or future
loss of service or may introduce errors into the digital bitstream.
Insert
ADU
into
ADU
slot in bank being equipped.
Response: After approximately 20 seconds,
ADU
and
BCU FAIL
indica-
tors go off.
Comment: Other alarm indicators may take up to 4 minutes settle. It is
normal for these alarms to go on and off during this initializa-
tion period. When converting from Mode 1 to Mode 2, or vice
versa, all alarms (such as CLF, MJ, and digroups) will not clear
until both ends have been equipped for the new configuration.
12. After approximately 20 seconds, do
ADU
and
BCU FAIL
indicators go off?
If
YES,
then proceed to Step
21.
If
NO,
then continue with Step
13.
13. Replace
BCU
.
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