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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
E1-N-14 Card
The E1-N-14 card can function as a working or protect card in 1:1 or 1:N protection schemes. If you use
the E1-N-14 as a standard E-1 card in a 1:1 protection group, you can install the E1-N-14 card in any
multispeed or high-speed card slot on the ONS 15454 SDH. If you use the card’s 1:N functionality, you
must install an E1-N-14 card in Slot 3 (for bank A) or Slot 15 (for bank B).
You can group and map E1-N-14 card traffic in VC-12 as per ITU-T G.707 to any other card in an ONS
15454 SDH node. For performance-monitoring purposes, you can gather bidirectional E-1 frame-level
information (loss of frame, parity errors or CRC errors, for example).
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.
3.8.1 E1-N-14 Card-Level Indicators
The E1-N-14 card faceplate has three LEDs.
3.8.2 E1-N-14 Port-Level Indicators
You can obtain the status of the fourteen E-1 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 3-8 E1-N-14 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 FAIL LED persists.
ACT/STBY LED
Green (Active)
Yellow (Standby)
The ACT/STBY LED indicates when the E1-N-14 card is operational and
ready to carry traffic (green) or when the card is in standby mode (yellow).
Yellow SF LED The yellow SF LED indicates a signal failure or condition such as LOS, LOF
or high BERs on one or more of the card’s ports.
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