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Chapter 4 DS3 and E3 Interface Cabling Specifications
3-Slot DS3/E3 (24-port BNC) ECM Mapping
Release TR3.2.1
Turin Networks
Page 2-41
3-Slot DS3/E3
(24-port BNC)
ECM Mapping
The 3-slot DS3/E3 (24-port BNC) ECM provides direct cable access to two cards (n
and n+2) and occupies the width of three slots (n, n+1, and n+2) on the main backplane.
The following graphic shows the 3-slot DS3/E3 (24-port BNC) ECM and input (I) and
output (O) BNC connector locations to support two 12-port DS3/E3/EC-1 cards and
1:2 protection.
Figure 2-15 3-Slot DS3/E3 (24-port BNC) ECM Mapping
Output (O)
BNC Connectors for
Ports 1–12 of Slot n
Input (I)
BNC Connectors for
Ports 1–12 of Slot n
Output (O)
BNC Connectors for
Ports 1–12 of Slot n+2
Input (I)
BNC Connectors for
Ports 1–12 of Slot n+2