Lucent Technologies FiberReach DDM-2000 - Page 1096

NTP-002
: Circuit Order 363-206-305
Page 4 of 8 Issue 3, June 2000
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
DO ITEMS BELOW IN ORDER LISTED. . . . .FOR DETAILS, GO TO
NOTE:
Up to 28 DS1s may be terminated in an OC-1 ring network.
Once a DS1 is terminated, that timeslot must be reserved in
both directions around the ring to the far end. Therefore, if a
DS1 is terminated (cross-connected) on a near-end and
far-end terminating shelf, it must also be pass-through
cross-connected in every shelf in the network. (See
"Cross-Connection Provisioning" in the "Administration and
Provisioning" section of this manual for more information on
cross connections.)
Use the ent-crs-vt1: command at the new shelf to make all
required pass-through cross-connections (for example,
ent-crs-vt1:m-1-1-1,m-1-1-1). Pass-through
cross-connections must be made at the new shelf to correspond to
each terminating cross-connection present on every shelf in the
ring network (see Figure 1).
7.
!
WARNING:
Unterminated optical connectors may emit invisible laser
radiation. Eye damage may occur if beam is viewed directly
or with improper optical instruments. Avoid direct exposure
to the beam.
!
CAUTION:
An automatic protection switch service hit may occur when
the correct optical fibers are cut. Cutting the wrong fiber lines
will cause a service interruption.
At the point where the new DDM-2000 FiberReach shelf will be
added, use local procedures to cut the two fiber lines connecting
existing shelves and condition the fiber for connection to the new
shelf.
8.
NOTE:
Cutting the main sync source will cause the line-timed node
to go into holdover .
Verify that only minor nsa OC-1/OC-3/OC-12 LOS and nsa
inc. VT/STS1 AIS alarms are present at each end of the fiber
cut.