Nortel Networks OPTera Metro 3500 - Manual (Page 225)

Operation, administration, and maintenance (OAM) features 2-187
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 2-71
Collocated OPTera Metro 3500 NE and shared VT-managed STS – TDM traffic and grooming
(Scenario 1)
EX1561p
OM3500
OM3500
OC-3/12/48
UPSR ring
Note: For simplicity only one direction is shown.
VT#1, STS-1 #1 A
VT
grooming
VT#1 and VT#2,
STS-1 #n
Electrical
termination
DS1
DS3
EC1
OM3500
OM3500
VT#2, STS-1 #1
B
= OM3500 tributary circuit pack
= Path bridge & select
4 x 1 WAYPR per VT
Backbone
Network
Legend
UPSR, 2 way
(unprotected)
OM3500
(W/STX)
OM3500 (W/VTX)
(collocated with
OM3500 [W/STX])