Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
DS3-12 Card
4.14.1 DS3-12 Card-Level Indicators
The DS3-12 card faceplate has three LEDs.
4.14.2 DS3-12 Port-Level Indicators
You can find the status of the 12 DS3-12 card ports 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. See Chapter 1, “Alarm Troubleshooting” for a complete
description of the alarm messages.
4.14.3 DS3-12 Specifications
• DS3-12 Input
– Bit Rate: 44.736 Mbps +/- 20 ppm
– Frame Format: DS-3 ANSI T1.107-1988
– Line Code: B3ZS
– Termination: Unbalanced coaxial cable
– Input Impedance: 75 ohms +/-5%
– Cable Loss: Max 450 ft. 734A, RG-59, 728A/Max 79 ft. RG-179
– AIS: TR-TSY-000191-compliant
• DS3-12 Output
– Bit Rate: 44.736 Mbps +/- 20 ppm
– Frame Format: DS-3 ANSI T1.107-1988
– Line Code: B3ZS
– Termination: Unbalanced coaxial cable
– Input Impedance: 75 ohms +/-5%
– Cable Loss: Max 450 ft. 734A, RG-59, 728A/Max 79 ft. RG-179
– AIS: TR-TSY-000191-compliant
– Power Level: -1.8 - +5.7 dBm
– Pulse Shape: ANSI T1.102-1988 Figure 8
Table 4-25 DS3-12 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 DS3-12 card is operational and
ready to carry traffic. When the ACTV/STBY LED is amber, the DS3-12
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.