3-24
Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
DS3i-N-12 Card
You can install the DS3i-N-12 card in any multispeed or high-speed card slot. Each DS3i-N-12 port
features DSX-level outputs supporting distances up to 450 feet. With FMEC-E3/DS3 the card supports
1.0/2.3 Miniature Coax non balanced connectors.
The DS3i-N-12 can operate as the protect card in a 1:N (N <
4) DS-3 protection group. It has circuitry
that allows it to protect up to four working DS3i-N-12 cards.
Note The lowest level cross-connect is STM-1. Lower level signals, such as E-1, DS-3, or E-3, can be
dropped. This may leave part of the bandwidth unused.
3.10.1 DS3i-N-12 Card-Level Indicators
The DS3i-N-12 card faceplate has three LEDs.
3.10.2 DS3i-N-12 Port-Level Indicators
You can find the status of the DS3i-N-12 card ports using the LCD screen on the ONS 15454 SDH 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. Refer to Chapter 1, “Alarm Troubleshooting,” for a
complete description of the alarm messages.
Table 3-10 DS3i-N-12 Card-Level Indicators
Card-Level LEDs Description
Red FAIL LED The red FAIL LED indicates the card’s processor is not ready. This LED is
lit during Reset. The FAIL LED flashes during the boot process. Replace the
card if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Yellow (Standby)
When the ACTV/STBY LED is green, the DS3i-N-12 card is operational and
ready to carry traffic. When the ACTV/STBY LED is yellow, the DS3i-N-12
card is operational and in standby (protect) mode.
Yellow SF LED The yellow SF LED indicates a signal failure or condition such as LOS or
LOF on one or more of the card’s ports.
Comments to this Manuals