Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño
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Figure 6-18: High-Density BNC Backplane for use in 1:N Protection Schemes
The EIA side marked “A” hosts 48 pairs of BNC connectors. Each column of connector pairs is
numbered and corresponds to the slot of the same number. The first column (12 pairs) of BNC
connectors corresponds to Slot 1 on the shelf assembly, the second column to Slot 2, the third
column to Slot 4, and the fourth column to Slot 5. The rows of connectors correspond to Ports 1
to 12 of a 12-port card.
The EIA side marked “B” provides an additional 48 pairs of BNC connectors. The first column (12
pairs) of BNC connectors corresponds to Slot 13 on the shelf assembly, the second column to
Slot 14, the third column to Slot 16, and the fourth column to Slot 17. The rows of connectors
correspond to Ports 1 to 12 of a 12-port card. The BNC connector pairs are marked “Tx” and “Rx”
to indicate transmit and receive cables for each port. The High-Density BNC EIA supports both
1:1 and 1:N protection across all slots except Slots 6 and 12.
BNC Insertion and Removal Tool
Due to the large number of BNC connectors on the High-Density BNC EIA, you might require a
special tool for inserting and removing BNC EIAs (see Figure 6-19). This tool also helps with
ONS 15454 patch panel connections.
Figure 6-19: BNC Insertion and Removal Tool
This tool can be obtained with P/N 227-T1000 from:
Amphenol USA (www.amphenol.com)
One Kennedy Drive
Danbury, CT 06810
Phone: 203-743-9272 Fax: 203-796-2032