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

Page: 2442 / 2536

DLP-557
: Detailed Level Procedure 363-206-285
Page 6 of 22 Issue 2, February 2000
DDM-2000 OC-3 M
ULTIPLEXER
7. NOTE:
In dual homing configurations (Figures 5 through 8 and 16), 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 in
Figures 5 and 6, for traffic to be routed between Node 1 and the
FiberReach system, the 27G-U/27G2-U OLIU or 26G2-U OLIU must be
installed in FUNCTION UNITS group A, B, or C, slot 1 of Node 5 and
FUNCTION UNITS group A, B, or C, slot 2(P) of Node 4. This is required
because traffic entering Node 5, FUNCTION UNITS slot A-1 from the
FiberReach shelf is automatically connected to the MAIN-1 OLIU when
cross-connections are made. Traffic entering FUNCTION UNITS slot
A-2(P) is automatically connected to the MAIN-2 OLIU.
In single homing configurations (Figures 9 through 13 and 15), the
27G-U/27G2-U OLIU or 26G2-U OLIU in FUNCTION UNITS group A, B,
or C, slot 1 of the OC-3 or OC-12 shelf must be connected to the MAIN-1
OLIU in the FiberReach shelf. The 27G-U/27G2-U OLIU or 26G2-U
OLIU in FUNCTION UNITS group A, B, or C, slot 2(P) of the OC-3 or
OC-12 shelf must be connected to the MAIN-2 OLIU in the FiberReach
shelf.
NOTE:
The 26G2-U OLIU may be substituted for the 27G-U/27G2-U OLIU in the
OC-3 or OC-12 shelf FUNCTION UNITS slots when only one OC-1
single-homed or dual-homed ring will be required.
Use the
rtrv-eqpt:
command at each node in the network to verify that
each shelf is properly equipped for the service being established. Ensure that
OLIU circuit packs are installed in the correct slots in the host OC-3 or OC-12
nodes.
8. NOTE:
Cross-connections supporting DS1 services may be either STS1 or
VT1.5 cross-connections in DDM-2000 OC-3 or OC-12. Only VT1.5
cross-connections are allowed in DDM-2000 FiberReach. In an OC-3 or
OC-12 shelf, use VT1.5 cross-connections for DS1 services if you expect
to cross-connect only a portion of the VT1.5 signals in the STS-1
channel. If STS1 cross-connections are made at an OC-3 or OC-12 shelf,
there is a fixed mapping of all 28 VT1.5 cross-connections to a specific
shelf group [see
ent-crs-sts1:
command].