Lucent Technologies DDM-2000 OC-3, User & Service Manual

Page: 1474 / 2536

363-206-285 Circuit Order:
NTP-015
Issue 2, February 2000 Page 6 of 6
DDM-2000 OC-3 M
ULTIPLEXER
DO ITEMS BELOW IN ORDER LISTED . . . . .FOR DETAILS, GO TO
14.
NOTE:
If line timing mode is specified or external timing mode is
specified but the timing reference was not available at new
shelf turnup, the TGS/TG3 option switches are probably set
for
free running. Before the end-to-end system is
established, the specified timing mode must be set on the
TGS/TG3 circuit pack.
NOTE:
If the option switch setting is changed, an update must be
done by momentarily depressing the UPD/INIT button on the
SYSCTL after the TGS/TG3 circuit packs are reinstalled.
NOTE:
If external timing is selected and the NE ACTY LED remains
lighted after the TGS/TG3 circuit pack is reinserted, use the
CIT and the
rtrv-sync
command to check the operational
mode of the system. If the mode is
Holdover
instead of
External
, check that the incoming timing references are
connected.
DLP-513 Set timing mode on TGS/TG3 to the timing mode specified in
work order or office records.
DLP-515 15. Perform automatic end-to-end OC-3 line test at new or existing RT
for ring configuration with linear extension.
16. Use
rtrv-crs-sts1:
or
rtrv-crs-vt1:
commands at
existing RT to see if required cross-connections have been made
to new RT. If required, use
ent-crs-( )
commands at existing
RT to make required cross-connections.
DLP-510 17. Perform end-to-end DS1 transmission test for added low speed
group, as required.
DLP-511 18. Perform end-to-end DS3 transmission test for added low speed
group, as required.
19. The system is ready for service to be established.
DLP-513
DLP-515
DLP-510
DLP-511