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

Page: 1726 / 2536

363-206-285 System Turnup:
NTP-044
Issue 2, February 2000 Page 4 of 14
DDM-2000 OC-3 M
ULTIPLEXER
DO ITEMS BELOW IN ORDER LISTED . . . . .FOR DETAILS, GO TO
10.
NOTE:
In dual homing configurations, OLIU circuit packs must be
installed in the correct slots in the host OC-3 or OC-12 nodes
to support the direction of traffic required. For example, see
Figures 1, 2, 3, and 4. In Figures 1 and 2, if a 26G2-U,
27G-U or 27G2-U 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-1 ring must be connected to a 26G2-U,
27G-U or 27G2-U OLIU installed in slot 2(P) of the
FUNCTION UNITS group ( ) being used to terminate the
OC-1 line (for example, Node 4 in Figures 1 and 2). Traffic
from Node 4 will then be directed toward Node 3 when
cross-connections are made. In Figures 3 and 4, note that all
traffic from the FiberReach shelf will be directed to Node 7
because of the slot positions that terminate the OC-1 line.
NOTE:
A dual-homed ring configuration requires that the first
FiberReach MAIN-1 OLIU connect to FUNCTION
UNITS-( )-1 OLIU on one host OC-3 shelf. The last
FiberReach MAIN-2 OLIU connects to the FUNCTION
UNITS-( )-2(P) OLIU on the other host OC-3 shelf.
Intermediate FiberReach shelves on the same OC-1 ring
connect from MAIN-2 OLIU at one FiberReach shelf to the
MAIN-1 OLIU at an adjacent FiberReach shelf (node). For
example, see Figures 7 and 8. This procedure will establish
the ring configuration starting from one OC-3 or OC-12 host
node (near end) and continuing to an adjacent FiberReach
node, then to the next FiberReach node until the final
connection is made from the last FiberReach node to the
remaining OC-3 or OC-12 host node.
NOTE:
All unused ports on the 27G-U/27G2-U OLIU must be set to
nmon
with the
set-state-oc1
command.