Cabling and Verifying Media Cards
ATM OC-3c (ATM/Q) media card
GRF 400/1600 Getting Started - 1.4 Update 2
October, 1998
5-9
ATM OC-3c (ATM/Q) media card
The ATM OC-3c (also called ATM/Q) media card provides two full-duplex interfaces. ATM
OC-3c cards are available in single and multimode versions. The ATM/Q media card has
hardware support for large route table look-up.
Note:
The ATM OC-3c maint 80 command toggles the single mode laser component on or
off. See the “ATM OC-3c Configuration” chapter in the GRF Configuration and Management
manual for usage information.
Figure 5-2 shows a single mode ATM OC-3c faceplate, single and multimode faceplates are
the same except that the single mode interfaces have a “LASER ON” LED.
Figure 5-2. ATM OC-3c single mode media card faceplate
LEDs
The top four LEDs on the faceplate indicate card status. The duplex interfaces A and B each
have a set of LEDs. Refer to Table 5-2 for a description of each LED.
AT
M
OC-3c
SM
B
A
RCV A
C
T
XMT A
C
T
LINK OK
PWR ON
F
A
UL
T
S
TAT
0
S
TAT
1
A
TM-3-Q
SM-4MB
(g0008)
RCV A
C
T
XMT A
C
T
LINK OK
LASER ON
LASER ON
Table 5-2. ATM OC-3c LEDs
LED
Description
Power
This green LED is on when GRF power is on.
Fault
This amber LED turns on and remains on if an error condition is
detected.
STAT 0
STAT 1
These green LEDs blink during self-test. When self-test completes,
STAT 0 blinks ten times a second and STAT 1 blinks once a second.
STAT 0 and STAT 1 indicate the activity of normal system interrupts. If
the media card hangs, they either turn off and remain off, or they turn
on and remain on.
RCV ACT
This amber LED blinks as ATM cells are received at the interface.
XMIT ACT
This amber LED blinks as ATM cells are transmitted out of the interface.
LINK OK
This green LED goes on when an optic cable is plugged into an
interface and remains on while connection is good at both cable ends.
LASER ON
This green LED provides a safety warning on single mode ATM cards.
One should not look into a laser-active interface component if a cable is
not plugged in.
