363-206-305 Detailed Level Procedure:
DLP-501
Issue 3, June 2000 Page 1 of 6
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
Replace BBG8/BBG8B SYSCTL
In Service
This procedure is used for replacing a BBG8/BBG8B SYSCTL in an in-service shelf.
For procedures to install the SYSCTL in a new shelf (initial installation), refer to
DLP-539.
1.
!
CAUTION:
Transmission configuration information for in-service systems is stored on
the
26-Type OLIU
circuit pack in
MAIN
slot
1
. In some instances (for
example, during some upgrades, system tests, or training classes), if the
system is in service and a version of software is being installed that is not
compatible with the current transmission configuration, it may be
necessary to remove the
OLIU
circuit pack in
MAIN
slot
1
to force the
system to run the software you are trying to download. If both
OLIU
circuit packs are not installed, removal of the only
OLIU
circuit pack will
cause service interruption.
NOTE:
The following step is recommended to protect against a loss of service
because of inadvertently loading incompatible software. But, if you are
sure that you want to load incompatible software, you may elect to
remove the OLIU in MAIN slot 1 and allow the software to download
without having to force the system to run the software.
Before performing this procedure, it is strongly suggested that both OLIU
circuit packs be installed in the shelf and the rtrv-state-path:,
rtrv-state-eqpt:, and rtrv-sync: commands be used at both ends of
the optical line to verify that the MAIN-2 OLIU circuit pack is the
Active
transmission path and
Reference/Line
. If the MAIN-2 OLIU is not active, use
the switch-path-vt1:m1-1-all,pri=manual command and
switch-sync:s=
src,
pri=manual command to switch traffic and timing
reference to the MAIN-2 OLIU circuit pack.
2. Remove SYSCTL being replaced and inspect option switch settings. Option
switches on the replacement BBG8/BBG8B SYSCTL are set the same as the
original.
3. Set all SYSCTL switch S1sections S1-1, S1-2, and S1-3 to OFF to set the
product (shelf) type. See Figure 1.
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