Specifications

Chapter 1: Features Overview
42 SSR 8000/8600 Getting Started Guide
LEDs
The ATM line card uses the following LEDs.
POS OC-3c MMF Line Card (T-Series)
POS OC-3c SMF Line Card (T-Series)
The Packet-over-SONET line card supports four OC-3c singlemode fiber (SMF) or
multimode fiber (MMF) connections using MT-RJ interfaces. Figure 21 shows the front
panel of the POS OC-3c MMF line card.
Figure 21. Front panel of POS OC-3c MMF line card
LED Description
PHY Green – indicates that the PHY is operating properly and a
link is established
Amber – indicates that the PHY is inactive due to media
errors
Blinking Green – indicates that the PHY has been disabled
by management
Off – indicates no connection
Amber – indicates that the diagnostics have detected a fault
Blinking Green – indicates that the PHY port has been
redirected elsewhere
Per-PHY Rx Green – indicates when the PHY’s transceiver receives
packets
Amber – indicates when the PHY’s transceiver receives
flow-control packets
Per-PHY Tx Green – indicates when the PHY’s transceiver transmits
packets
Amber – indicates when the PHY’s transceiver transmits
flow-control packets
2
Link
Tx
Rx
1
Link
Offline
Online
Tx
Rx
4
POS OC-3 MMFSSR-POS21-04
Link
Hot
Swap
Tx
Rx
3
Link
Tx
Rx