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Chapter 3
Electrical Cards
Table 3-10
Card-Level Indicators
Red FAIL LED
ACT/STBY LED
Green (Active)
Amber (Standby)
Amber SF LED
3.7.4 DS3/EC1-48 Port-Level Indicators
You can obtain the status of the DS3/EC1-48 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.
3.8 DS3i-N-12 Card
Note
For hardware specifications, see the
The 12-port ONS 15454 DS3i-N-12 card provides 12 ITU-T G.703, ITU-T G.704, and
Telcordia GR-499-CORE compliant DS-3 ports per card. Each port operates at 44.736 Mbps over a
75-ohm coaxial cable. The DS3i-N-12 card supports 1:1 or 1:N protection with the proper backplane
EIA. The DS3i-N-12 card works with the XCVT, XC10G, and XC-VXC-10G cross-connect cards. Four
sets of three adjacent DS-3 signals (Port 1 through Port 3, Port 4 through Port 6, Port 7 through Port 9,
and Port 10 through Port 12) are mapped to VC3s into a VC4 and transported as an STC-3c.
The DS3i-N-12 can also aggregate DS3 and E1 traffic and transport it between SONET and SDH
networks through AU4/STS 3 trunks, with the ability to add and drop DS3s to an STS3 trunk at
intermediate nodes.
3.8.1 DS3i-N-12 Slots and Connectors
You can install the DS3i-N-12 card in Slots 1 to 6 and 12 to 17. The DS3i-N-12 can operate as the protect
card in a 1:N (N <= 5) DS-3 protection group on a half-shelf basis, with protection cards in Slots 3 and
15. It has circuitry that allows it to protect up to five working DS3i-N-12 cards. With the proper
backplane EIA, the card supports BNC or SMB connectors. See the
the Backplane" section on page 7-5
restrictions.
Figure 3-8
78-18106-01
DS3/EC1-48 Card-Level Indicators
Description
Indicates that the card processor is not ready. This LED is on during reset.
The FAIL LED flashes during the boot process. Replace the card if the red
FAIL LED persists in flashing.
When the ACT/STBY LED is green, the card is operational and ready to
carry traffic. When the ACT/STBY LED is amber, the card is operational and
in standby (protect) mode.
Indicates a signal failure or condition such as LOS or LOF on one or more
card ports.
"A.5.6 DS3i-N-12 Card Specifications" section on page
for more information about electrical card slot protection and
shows the DS3i-N-12 faceplate and block diagram.
3.7.4 DS3/EC1-48 Port-Level Indicators
"7.2 Electrical Card Protection and
Cisco ONS 15454 Reference Manual, R8.5
A-23.
3-19
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