Figure 1-18: SMB EIA Backplane
The SMB EIA has 84 transmit and 84 receive connectors on each side of the ONS 15454 for a total of 168
SMB connectors (84 circuits).
The EIA side marked "A" hosts 84 SMB connectors in six columns of 14 connectors. The "A" side columns
are numbered 1 to 6 and correspond to Slots 1 to 6 on the shelf assembly. The EIA side marked "B" hosts an
additional 84 SMB connectors in six columns of 14 connectors. The "B" side columns are numbered 12 to 17
and correspond to Slots 12 to 17 on the shelf assembly. The connector rows are numbered 1 to 14 and
correspond to the 14 ports on a DS-1 card.
For DS-3 or EC-1 cards, the EIA supports 72 transmit and 72 receive connectors, for a total of 144 SMB
connectors (72 circuits). If you use a DS-3 or EC-1 card, only Ports 1 to 12 are active. If you use a DS3XM-6
card, only Ports 1 to 6 are active. The SMB connector pairs are marked "Tx" and "Rx" to identify transmit
and receive cables for each port. If you use SMB connectors, you can install DS-1, DS-3, or EC-1 cards in
Slots 1 to 4 or 14 to 17.
AMP Champ EIA
The ONS 15454 AMP Champ EIA supports 64-pin (32 pair) AMP Champ connectors for each slot on both
sides of the shelf assembly where the EIA is installed. Cisco AMP Champ connectors are female AMP #
552246-1 with AMP # 552562-2 bail locks. Each AMP Champ connector supports 14 DS-1 ports. You can
use AMP Champ EIAs with DS-1 cards only. Figure 1-19 shows the ONS 15454 with preinstalled AMP
Champ EIAs and the corresponding sheet metal cover and screw locations for the EIA.
To install AMP Champ connector DS-1 cables, you must use 64-pin bundled cable connectors with a 64-pin
male AMP Champ connector. You need an AMP Champ connector #552276-1 for the receptacle side and
#1-552496-1 (for cable diameter 0.475 in. to 0.540 in.) or #2-552496-1 (for cable diameter 0.540 in. to 0.605
in.) for the right-angle shell housing (or their functional equivalent). The corresponding 64-pin female AMP
Champ connector on the AMP Champ EIA supports one receive and one transmit for each DS-1 port for the
corresponding card slot.
ONS_15454_Reference_Manual_R8.5.x_--_Shelf_and_Backplane_Hardware
Figure 1-18: SMB EIA Backplane 26
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