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

Page: 1706 / 2536

363-206-285 Circuit Order:
NTP-042
Issue 2, February 2000 Page 4 of 12
DDM-2000 OC-3 M
ULTIPLEXER
DO ITEMS BELOW IN ORDER LISTED . . . . .FOR DETAILS, GO TO
10.
NOTE:
The network elements that terminate on each end of the
optical span must have their Network Side/User Side
parameters set to opposite values to avoid an
inconsistent DCC values
alarm. Network Side/User
Side parameters [
set-fecom
command] must be properly
set at each end of OC-3 optical spans. One end is
provisioned as "Network" and the other end is provisioned as
"User". Both ends of the OC-3 line cannot be the same and it
makes no difference which end is "Network".
NOTE:
The section data communication channel (DCC), used for
far-end communications, must be enabled at each network
element (shelf) for communication and to allow the
end-to-end line tests to work when the optical span is
established. Default condition in DDM-2000 is "enabled" for
the DCC channel. If it has been disabled, use the
set-fecom:
command at the DDM-2000 shelf to enable
far-end communications.
At the DDM-2000 shelf, use the
set-fecom:address:com=enabled,nsus=ns/us
command
to enable far-end communications (fecom) and set Network Side
(ns)/User Side (us) parameters.
11. At the FT-2000 shelf, use
CONFIGURATION-Set-OC3
command
to set the protection mode to 0 X 1 for the OC-3 slot used for DRI
connections, if only one Optical Interface is used for the DRI
connection. If two Optical Interfaces are used for the DRI
connection, use
CONFIGURATION-Set-OC3
command to set the
protection mode to 1 + 1 for the OC-3 slot used for DRI
connections.
12. At the FT-2000 shelf, use
CONFIGURATION-Enter-Assignment-DCC
command to
assign a DCC channel to slot(s) used for DRI connections, if
required.