Lucent Technologies DDM-2000 OC-3, Руководство пользователя и обслуживания

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SET-SYNC 8 of 1 Page SET-SYNC
NAME
Characteristics Synchronization Set set-sync:
DESCRIPTION
!
CAUTION:
service. affect may command this of Execution
synchronization switching, mode synchronization the provisions command This
(BBF4) TG3 the or TGS the when signals timing the of mode output and source,
or timed, internally timed, externally be to provisioned is hardware pack circuit
timed. line
also will command this later, and 13.0 Release OC-3 DDM-2000 with Beginning
can pack This (BBF4). TG3 pack, circuit timing 3 Stratum new the with used be
packs circuit TGS two the of either with combination in used be not
be can pack circuit BBF4 The element. network same the in (BBF2/BBF2B)
system a that ensure to taken be must Care application. BBF2B any in used
for source sync its receive not will packs circuit BBF4 new these with equipped
TGS BBF2B or BBF2 either with equipped is that system another from line-timing
packs.
1: NOTE
is shelf OC-3 the whether same the is provisioning Synchronization
its in packs circuit OLIU 29G-U) or (24G-U OC-12 or OC-3 with equipped
slots. unit Main
2: NOTE
is slots main in packs circuit OLIU 27-type on #1 line OC-1 from timing Line
supported.
modes: timing these of one to provisioned be can DDM-2000 Each
oscillator. internal an from running Free
is reference timing This interface. optical incoming an from Line-timed
the protected, is line optical the If signals. outgoing all generate to used
timing the as selected line the also is transmission for selected line
pack, circuit (TGS) generator timing BBF2B a with equipped If reference.
Function in line the (TG3), pack circuit timing 3 Stratum BBF4 a with or
timing the for selected be optionally can transmission for selected C Unit
reference.
circuit TG3 or TGS Each signal. reference DS1 a from timing External
which from and monitors it which signal reference DS1 one receives pack
the to cross-fed is clock recovered The signal. clock a recovers it
DS1 a If shelf. same the on pack circuit TG3 or TGS companion
take will other the pack, circuit timing one on detected is failure reference
OC-3 DDM-2000
2000 February 2 Issue
11-457