Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
DS3-12E Card
• F-bit monitoring
• Far-end block errors (FEBE) monitoring
• Far-end alarm and control (FEAC) status and loop code detection
• Path trace byte support with TIM-P alarm generation
You can install the DS3-12E card in any multispeed or high-speed card slot on the ONS 15454. Each
DS3-12E port features DSX-level outputs supporting distances up to 450 feet. With the proper backplane
EIA, the card supports BNC or SMB connectors.
The DS3-12E supports a 1:1 protection scheme, meaning it can operate as the protect card for one other
DS3-12E card.
4.16.1 DS3-12E Card-Level Indicators
The DS3-12E card faceplate has three LEDs.
4.16.2 DS3-12E Port-Level Indicators
You can find the status of the DS3-12E card ports using the LCD screen on the ONS 15454 fan-tray
assembly. Use the LCD to quickly view the status of any port or card slot; the screen displays the number
and severity of alarms for a given port or slot. See Chapter 1, “Alarm Troubleshooting” for a complete
description of the alarm messages.
4.16.3 DS3-12E Compatibility
The DS3-12E is compatible with Software R2.2.x or higher. If Software R3.0 or higher is used, the card
uses all enhanced performance monitoring functions. With Software R2.2.2, the DS-3E card operates
with the same functions as the older DS-3 card.
4.16.4 DS3-12E Card Specifications
• DS3-12E Input
– Bit Rate: 44.736 Mbps +/- 20 ppm
– Frame Format: DS-3 ANSI T1.107-1988
Table 4-27 DS3-12E Card-Level Indicators
Card-Level Indicators Description
Red FAIL LED
The red FAIL LED indicates that the card’s processor is not ready. Replace
the card if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
When the ACTV/STBY LED is green, the DS3-12E card is operational and
ready to carry traffic. When the ACTV/STBY LED is amber, the DS3-12E
card is operational and in standby (protect) mode.
Amber SF LED
The amber SF LED indicates a signal failure or condition such as port LOS,
AIS, etc.