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Traverse Installation and Commissioning Guide, Section 2: Network Interface Specifications
DS1 and E1 ECM Placement
Page 2-24
Turin Networks
Release TR3.2.1
DS1 and E1
ECM
Placement
The DS1/E1 and E1 ECMs plug into the main backplane 2 mm connectors of any valid
odd or even slot. The 2-slot DS1/E1 ECM design provides direct cable access to one
(n+1) or two (either n and n+1 or n and n+2) cards (depending on the protection cabling
scheme used) and occupies the width of two slots on the main backplane. The 3-slot E1
ECM design provides direct cable access to two cards (either n and n+1 or n and n+2,
depending on the protection scheme) and occupies the width of three slots (n, n+1, and
n+2) on the main backplane. Plug the ECM into the right-most (n) or center (n+1)
2 mm connectors for 2-slot ECMs, depending on the protection scheme, and the center
(n+1) 2 mm connectors for 3-slot ECMs, as seen from the rear view of the shelf.
For a graphical representation, Section 2—
Network Interface Specifications
Chapter 2—“ECM Interface Specifications,”
ECM Placement at the Traverse Main
DS1 and E1
Card Cabling
Schemes
DS1 and E1 card cabling schemes are as follows:
•
Traverse 2000 DS1 and E1 Card Cabling Schemes
•
Traverse 1600 DS1 and E1 Card Cabling Schemes
•
Traverse 600 DS1 and E1 Card Cabling Schemes
Traverse 2000
DS1 and E1
Card Cabling
Schemes
The Traverse 2000 main backplane design supports 1:1 and 1:2 equipment protection
and unprotected cabling schemes. Both 1:1 and 1:2 equipment protection groups can
start in any odd or even slot.
, Appendix A—“Card Placement Planning and
Guidelines,” page 12-1 for further card placement guidelines and restrictions.
Note:
The Traverse main backplane supports DS1 and E1 protected and unprotected
slots and ports simultaneously.
Table 2-10 Traverse 2000 DS1 and E1 Cabling Scheme
Card Type
Cabling
Scheme
ECM Type
(Connector)
Maximum
Protection
Groups
Total # of
Working
Ports
Total # of
ECM
Slots
(In Use)
Comments
(Front Shelf
Perspective)
DS1 (28-port)
1:2 protection
2-slot DS1/E1
(Telco 64)
5
280
15
The center card (n+1) protects
left-adjacent (n) and
right-adjacent (n+2) cards.
1:1 protection
8
224
16
Either the left-adjacent (n) or
right-adjacent (n+2) card from
the protecting card (n+1) is the
working card.
Unprotected
N/A
448
16
The DS1/E1 ECM provides
direct cable access to both cards
(n and n+1).
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