| EIAs are backplane connector panels that must be equipped on the ONS 15454 chassis if you will provide DS1, DS3, or EC-1 services from the node. EIAs are made to fit on either Side A or Side B of the upper section of the backplane. Because Side A consists of the slots that are on the left as you face the front of the shelf assembly, the Side A EIA is installed on the right side as you face the rear. Likewise, the Side B EIA is installed on the left side facing the rear of the shelf assembly. Various EIAs are available from Cisco, and each side of the shelf can be independently equipped with any type. If no electrical terminations are required for a shelf side, it can be equipped with a blank backplane cover. If there is initially no requirement for electrical connections, and the requirement appears later, the blank backplane cover can be removed and replaced with an EIA while the shelf is powered and in service. You select an EIA based on the type and quantity or density of connections required. These EIA types are available: BNC (Bayonet Neill-Concelman) EIA Used for DS3 (clear channel), DS3 Transmux (channelized DS3), and EC-1 services. This EIA type has been made obsolete by newer versions, and Cisco no longer sells it. High-Density (HD) BNC EIA Offers the same services as the BNC EIA, with twice the number of available connections. HD mini-BNC EIA Offers the same services as the BNC and HD BNC EIAs, with twice as many connections as the HD BNC EIA and four times as many as the BNC EIA. Either the HD mini-BNC EIA or one of the Universal Backplane Interface Connector (UBIC)-type EIAs are required for cabling the HD DS3/EC1 cards. AMP Champ EIA Used for DS1 services only. SMB (Sub-Miniature B) EIA Can be used for any type of electrical termination, including DS1, DS3, DS3 Transmux, and EC-1. UBIC-V and UBIC-H EIAs Can be used for any type and any density electrical interface card termination. These are the most flexible EIA type. The difference between the two is in the orientation of the cable connectors, either vertical (UBIC-V) or horizontal (UBIC-H). Either the UBIC-V or the UBIC-H is required for cabling the high-density DS1 cards.
Table 6-2 provides a summary of the available EIAs, with their associated connector types, supported working shelf slots, and supported electrical interface cards. Table 6-2. ONS 15454 Electrical Interface AssembliesEIA Type | Cards Supported | A-Side Connectors | A-Side Slots | B-Side Connectors | B-Side Slots |
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BNC | DS3-12E DS3N-12E DS3XM-6 DS3XM-12 EC1-12 | 24 pairs of BNC connectors (2 slots;12 pairs/slot) | Slot 2 Slot 4 | 24 pairs of BNC connectors (2 slots;12 pairs/slot) | Slot 14 Slot 16 | High-Density BNC | DS3-12E DS3N-12E DS3XM-6 DS3XM-12 EC1-12 | 48 pairs of BNC connectors (4 slots;12 pairs/slot) | Slot 1 Slot 2 Slot 4 Slot 5 | 48 pairs of BNC connectors (4 slots;12 pairs/slot) | Slot 13 Slot 14 Slot 16 Slot 17 | High-Density mini-BNC | DS3-12E DS3N-12E DS3XM-6 DS3XM-12 DS3/EC1-48 EC1-12 | 96 pairs of mini-BNC connectors | Slot 1 Slot 2 Slot 4 Slot 5 Slot 6 | 96 pairs of mini-BNC connectors | Slot 12 Slot 13 Slot 14 Slot 16 Slot 17 | AMP Champ | DS1-14 DS1N-14 | 6 AMP Champ connectors (1 connector per slot) | Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 | 6 AMP Champ connectors (1 connector per slot) | Slot 12 Slot 13 Slot 14 Slot 15 Slot 16 Slot 17 | SMB | DS1-14 DS1N-14 DS3-12E DS3N-12E DS3XM-6 DS3XM-12 EC1-12 | 84 pairs of SMB connectors (6 slots;14 pairs/slot) | Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 | 84 pairs of SMB connectors (6 slots;14 pairs/slot) | Slot 12 Slot 13 Slot 14 Slot 15 Slot 16 Slot 17 | UBIC-V | DS1-14 DS1N-14 DS1-56 DS3-12E DS3N-12E DS3XM-6 DS3XM-12 DS3/EC1-48 EC1-12 | 8 pairs of SCSI connectorsvertical orientation | Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 | 8 pairs of SCSI connectorsvertical orientation | Slot 12 Slot 13 Slot 14 Slot 15 Slot 16 Slot 17 | UBIC-H | DS1-14 DS1N-14 DS1-56 DS3-12E DS3N-12E DS3XM-6 DS3XM-12 DS3/EC1-48 EC1-12 | 8 pairs of SCSIconnectorshorizontal orientation | Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 | 8 pairs of SCSIconnectorshorizontal orientation | Slot 12 Slot 13 Slot 14 Slot 15 Slot 16 Slot 17 |
Figure 6-2 shows two examples of EIAs, the HD BNC and the AMP Champ. Figure 6-2. EIA Examples: HD BNC and AMP Champ 
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