Nortel Networks OPTera Metro 3500 - Manual (Page 41)

Operation, administration, and maintenance (OAM) features 2-3
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Gigabit Ethernet Drop and Continue
OPTera Metro 3500 Release 12.1, extends its Unidirectional Multi-Node Drop
and Continue capability to support unidirectional Gigabit Ethernet (GE)
traffic. Unidirectional Multi-Node Drop and Continue provides the ability to
drop a time slot, either SONET contiguous (STS-1, STS-3c, STS-12c and
STS24c) or Virtual concatenation (STS-1-nv, n = 1 through 21 or STS-3c-nv,
n = 1 through 7), at a single or on a continuing series of nodes in an UPSR ring
or linear chain using a single timeslot on the ring or the linear chain. Gigabit
Ethernet unidirectional drop and continue connections are supported by the
2xGigE/FC-P2P interface for UPSR rings.
Figure 2-1 on page 2-4 , illustrates
an application where a video signal is inserted on a 2xGigE/FC-P2P interface
at one node and dropped on 2xGigE/FC-P2P interfaces at 5 subsequent nodes
using a unidirectional CCAT or VCAT timeslot(s).