Turin Networks TransNav, Installation And Commissioning Manual

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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
Backplane , page 2-18.
DS1 and E1
Card Cabling
Schemes
DS1 and E1 card cabling schemes are as follows:
• Traverse 2000 DS1 and E1 Card Cabling Schemes , page 2-24
• Traverse 1600 DS1 and E1 Card Cabling Schemes , page 2-26
• Traverse 600 DS1 and E1 Card Cabling Schemes , page 2-28
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.
Refer to Section 12— Appendices , 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).