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

Page: 1789 / 2536

NTP-050
: System Turnup 363-206-285
Page 7 of 14 Issue 2, February 2000
DDM-2000 OC-3 M
ULTIPLEXER
DO ITEMS BELOW IN ORDER LISTED. . . . . FOR DETAILS, GO TO
16.
NOTE:
In dual homing configurations, OLIU circuit packs must be
installed in the correct FUNCTION UNITS slots in the host
OC-12 nodes to support the direction of traffic required. For
example, see Figures 1 and 2. In Figure 1, if an OLIU is
installed in Node 5, FUNCTION UNITS group A, slot 1, traffic
will be routed toward Node 6 when cross connections are
made. The other end of the associated OC-3 ring must be
connected to an OLIU installed in slot 2(P) of the
FUNCTION UNITS group ( ) being used to terminate the
OC-3 line (for example, Node 4 in Figure 1). Traffic from
Node 4 will then be directed toward Node 3 when
cross-connections are made. In Figure 2, note that all traffic
from the OC-3 shelf will be directed to Node 8 because of
the slot positions that terminate the OC-3 line.
NOTE:
A dual-homed ring configuration requires that the first OC-3
MAIN-1 OLIU connect to FUNCTION UNITS ( ) 1 OLIU on
one host OC-12 shelf. The last OC-3 MAIN-2(P) OLIU
connects to the FN( ) 2(P) OLIU on the other host OC-12
shelf. Intermediate OC-3 shelves on the same OC-3 ring
connect from MAIN-2(P) OLIU at one OC-3 shelf to the
MAIN-1 OLIU at an adjacent OC-3 shelf (node). For
example, see Figure 3. This procedure will establish the ring
configuration starting from one OC-12 host node (near end)
and continuing to an adjacent OC-3 node, then to the next
OC-3 node until the final connection is made from the last
OC-3 node to the remaining OC-12 host node.
NOTE:
Unused optical connectors on OLIUs should remain looped
until optical line connections are made.
At the near end OC-12 host node, remove the optical loop from
the FUNCTION UNITS OC-3 OLIU being used for the OC-3 ring
configuration (for example, in Figure 3, OC-12 shelf Node 5, slot
FN-A-1) At the other end of the optical span being established,
remove the optical loop from the associated OLIU (for example, in
Figure 3, OC-3 shelf Node 7 MAIN-1 OLIU.