Cisco Systems MGX 8230 manual E3 Interfaces, LED Indicators

Chapter 2 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.703

•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 or synchronized to shelf

LED Indicators

Table 2-14 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 indicates the receiving
		firmware.
		• Fast blink indicates the service module is passing BRAM
		channel information to the PXM1.
		• Steady yellow indicates the card is in Standby mode and
		the firmware is executing ADMIN code.
FAIL LED	Red	• Steady red with Active and Standby LEDs off indicates
		either the card is in the Reset condition, the card has
		failed, or the card set is not complete (no line module).
		• Steady red with Active LED on indicates the card was
		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 failure.
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.

	Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001		2-51