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

Page: 1654 / 2536

NTP-039
: Circuit Order 363-206-285
Page 2 of 32 Issue 2, February 2000
DDM-2000 OC-3 M
ULTIPLEXER
DO ITEMS BELOW IN ORDER LISTED. . . . . FOR DETAILS, GO TO
!
CAUTION:
This procedure has been tested using a Gould fiber splitter
which introduces 3 dB of loss into the fiber span. The
amount of loss may differ for the type of splitter used and
must be considered when doing an upgrade. If there is not
enough excess loss budget in the optical spans between the
CO and first RT to allow the use of a splitter, the upgrade
may be performed out of service. Optical fiber switches
which introduce no loss may also be used, but require extra
steps in the upgrade procedure which are not documented.
Fiber splitters and/or switches are available from
manufacturers such as Gould, Fibercell, Corning, DiCon,
ADC, and others.
!
CAUTION:
Plans, patch facilities, and loss budget calculations must be
available for the fiber line to be connected between the CO
and the "last" RT to form the ring network.
!
CAUTION:
DDM-2000 circuit packs contain static sensitive components
which can be damaged by electrostatic discharge. A static
ground wrist strap must be worn when handling the circuit
packs. See electrostatic discharge considerations in Trouble
Clearing: TAD-100
.
NOTE:
This procedure assumes that the DDM-2000 is in service
and the optical line connections are going to be changed to a
ring configuration. It is also assumed that Release 8
software is initially installed in each shelf. TARP Release 13
or later ring software is required for the final ring
configuration.
NOTE:
All shelves in the same network must have the same or
compatible software releases.
TAD-100