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Cisco ONS 15454 Reference Manual, R7.0.1
OL-9217-01
Chapter 3 Electrical Cards
3.6 3.5.4 DS3-12 and DS3N-12 Port-Level Indicators
3.5.4 DS3-12 and DS3N-12 Port-Level Indicators
You can find the status of the 12 DS3-12 and 12 DS3N-12 card ports by using the LCD screen on the
ONS 15454 fan-tray assembly. Use the LCD to view the status of any port or card slot; the screen
displays the number and severity of alarms for a given port or slot.
3.6 DS3/EC1-48 Card
Note For hardware specifications, see the “A.5.4 DS3/EC1-48 Card Specifications” section on page A-19.
The ONS 15454 DS3/EC1-48 card provides 48 Telcordia-compliant, GR-499 DS-3 ports per card. Each
port operates at 44.736 Mbps over a single 75-ohm 728A or equivalent coaxial span. The DS3/EC1-48
card operates as a working or protect card in 1:N protection schemes, where N <= 2.
Caution When a protection switch moves traffic from the DS3/EC1-48 working/active card to the DS3/EC1-48
protect/standby card, ports on the now active/standby card cannot be taken out of service. Lost traffic
can result if you take a port out of service, even if the DS3/EC1-48 standby card no longer carries traffic.
3.6.1 DS3/EC1-48 Slots and Connectors
For SONET applications, the DS3/EC1-48 card requires an HD shelf (15454-SA-HD) and EIA (UBIC,
MiniBNC); Software Release 5.0 or greater; and XC10G or XC-VXC-10G cards.
Note The DS3/EC1-48 card supports an errorless software-initiated cross-connect card switch when used in
a shelf equipped with XC-VXC-10G and TCC2/TCC2P cards.
You can install the DS3/EC1-48 card in Slots 1 to 3 or 15 to 17 on the ONS 15454, but installing this
card in certain slots will block the use of other slots. Table 3-8 shows which slots become unusable for
other electrical cards when the DS3/EC1-48 card is installed in a particular slot.
Caution Do not install low-density DS-1 cards in the same side of the shelf as DS3/EC1-48 cards.
Table 3-8 DS3/EC1-48 Slot Restrictions
Slot Additional Unusable Slots for Electrical Cards
15 and 6
2 3 or 4 (except another DS3/EC1-48 card can be installed in Slot 3)
3—
15 —
16 14 and 15 (except another DS3/EC1-48 card can be installed in Slot 15)
17 12 and 13
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