Nortel Networks 3500 ユーザーズマニュアル
2-144 Operation, administration, and maintenance (OAM) features
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 2-47
Hybrid end-to-end connections of DS1 facilities off an OC-192 ring
Hybrid end-to-end connections of DS1 facilities off an OC-192 ring
EX1490p
DSM
OM3500
NE3
x25
x3
OC-48 Ring
(VT-managed)
OM3500
NE4
OM3500
NE5
DSM
OM3500
NE2
OM3500
NE1
OC-192 Ring
(STS-managed)
DSM
DSM
Legend
DS1 5
•
•
DS1 29
•
•
DS1 29
DS1 3
DS1 13
DS1 82
DS1 13
DS1 82
= 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 managed OC192 ring.
involving a 28 DS1 DSM port at each end
of the connection. This connection traverses on
an STS managed OC192 ring.
= 25 bidirectional end-to-end hybrid STS1 & VT1.5 connections,
each one involving a DS1 port on the end of the connection. This
is implemented by an STS1 cross-connect in NE1, a pass-thru
STS1 cross connect in NE3 and 25 VT1.5 cross connects in NE5.
each one involving a DS1 port on the end of the connection. This
is implemented by an STS1 cross-connect in NE1, a pass-thru
STS1 cross connect in NE3 and 25 VT1.5 cross connects in NE5.
Note: Only unprotected connections are shown.
DS1 1
•
•
DS1 28
•
•
DS1 28
DS1 29
•
•
DS1 56
•
•
DS1 56
DS1 57
•
•
DS1 82
•
•
DS1 84
•
•
DS1 82
•
•
DS1 84
= 3 bidirectional end-to-end hybrid STS1 & VT1.5 connections,
each one involving a DS1 port on each end of the connection. This
is implemented by an STS1 cross-connect in NE1, a pass-thru
STS1 cross connect in NE3 and 3 VT1.5 cross connects in NE4.
each one involving a DS1 port on each end of the connection. This
is implemented by an STS1 cross-connect in NE1, a pass-thru
STS1 cross connect in NE3 and 3 VT1.5 cross connects in NE4.