Nortel Networks OPTera Metro 3500 - Manual (Page 226)

2-188 Operation, administration, and maintenance (OAM) features
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 2-72
Collocated OPTera Metro 3500 NE and shared VT-managed STS – TDM traffic and grooming
(Scenario 2)
EX1563p
OM3500
OM3500
OM3500 (usually
collocated with the DX)
OC-3/12/48
UPSR ring
OC-3/12/48
UPSR ring
OC-3/12/48
UPSR rings
VT#1, STS-1 #1
A
VT
grooming
VT#1 and VT#2,
STS-1 #n
DX
Electrical
termination
DS1
DS3
EC1
OM3500
OM3500
VT#2, STS-1 #1
B
4 x 1 WAYPR per VT
No UPSR path bridge
& select on DX. Just
an unprotected tributary
port is used.
Note: For simplicity only one direction is shown.
= DX tributary circuit pack
= Path bridge & select
= OPTera Connect DX network element
Backbone
Network
DX
Legend