2-51
Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Chapter2 Module and Service Descriptions Frame Relay Service Modules
E3 Interfaces
•One G.703 (34.368 Mbps +/-20 ppm) interface with dual female 75-ohm BNC coaxial connectors
per port (separate RX and TX)
•HDB3 line coding
•Pulse shape conforming to ITU G.7 03
•E3 BERT and extended loop-up, loop-down pattern generation and verification
•1:1 redundancy with Y-cabling for E3 CESM cards of the same type
•LOS alarm detection/generation support
•Transmitter loop-timed to receiver o r s ynch r on iz ed to shelf
LED Indicators
Table2-14 LED Indicators for T3/E3 CESM
Type of LED Color Meaning
ACT LED (Active) Green On indicates the card set is in active mode.
STBY LED (Standby) Yellow •Slow blink with the Active LED off indicates the card is
in the boot state.
•Fast blink with the Standby LED indica tes th e r ece ivin g
firmware.
•Fast blink indicates the service module is passi ng BRAM
channel information to the PX M 1 .
•Steady yellow indicates the card is in Standby mode and
the firmware is executing ADMIN co d e.
FAIL L ED Red •Steady red with Active and Standby LEDs off indicates
either the card is in the Rese t co n di ti on , t h e card has
failed, or the card set is not co mp let e (no line module).
•Steady red with Active LED on indi cat es t h e ca rd w as
active prior to failing.
•Steady red with Standby LED on indicates the card was
standby prior to failing.
•Both standby and red LED lit indicates self-test fai lu re .
PORT LEDs Green Green indicates the port is active.
Red Red indicates a local alarm on the port.
Yellow Yellow indicates a remote alarm on the port.