Nortel Networks OPTera Metro 3500 - Manual (Page 181)

Operation, administration, and maintenance (OAM) features 2-143
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 2-46 on page 2-143 , shows an example of hybrid (VT & STS-managed)
end-to-end connections in an OC-192 ring.
Figure 2-46
Hybrid end-to-end connections of DS1 facilities in an OC-192 ring
EX1489p
Figure 2-47 on page 2-144 shows an example of hybrid (VT & STS-managed)
end-to-end connections in an OC-192 ring.
DSM
DSM
OM3500
NE2
OM3500
NE1
OC-192 Ring
(STS-managed)
OM3500
NE3
OM3500
NE4
DSM
Legend
DS1 1
•
•
DS1 28
DS1 29
•
•
DS1 56
DS1 57
DS1 58
DS1 59
DS1 60
DS1 57
•
•
DS1 84
DS1 1
•
•
DS1 24
= a bidirectional end-to-end STS1 connection,
involving a 28 DS1 DSM port at each end
of the connection. This connection traverses on
an STS & VT-managed OC48 ring.
= 24 bidirectional end-to-end hybrid STS1 & VT1.5 connections,
each one involving a DS1 at the end of the connection. This
is implemented by an STS1 cross-connect in NE1, 24 pass-thru
VT1.5 cross connect in NE4 and 24 VT1.5 cross connects in NE5.
Note: Only unprotected connections are shown.
= 4 bidirectional end-to-end hybrid STS1 & VT1.5 connections,
each one involving a DS1 at each end of the connection. This
is implemented by an STS1 cross-connect in NE1, a 4 DS1 VT1.5 pass-thru
STS1 cross connect in NE4, 4VT1.5 pass-thru cross connects in NE3,
and 4 VT1.5 cross connects in NE2.
x4
x24