Troubleshooting
Troubleshooting ATM
176
Maintenance Procedures
December 2003
A500 switch diagnostics
The first step in any diagnostic procedure involving the A500 is to identify the OC-3 ports on the A500
that have S8700 Multi-Connect PNs attached.
•
Be aware that customers may use other ports on the A500 for applications unrelated to S8700
Multi-Connect (for example, LAN traffic or multimedia applications).
•
These other applications may manifest themselves in the output of the troubleshooting commands
you run on the A500. S8700 Multi-Connect PNs must be identified by their A500 port numbers.
NOTE:
The following examples show S8700 Multi-Connect PNs connected to A500 ports A1.1
and A1.2.
Port Board
Per Port
RX
Green
Off
No ATM cells are being received. This is not
a normal state if the terminating PN is
supposed to be up and running.
RX
Green
Intermitten
t blink
ATM cells are being received intermittently.
This is a typical pattern if only VBR (variable
bit rate) signaling connections are present,
but no talk paths are up (perhaps because no
calls are in progress).
RX
Green
Steady on
ATM cells are being received frequently
enough that the LED is lit constantly. This is
a typical pattern if CBR (constant bit rate)
talk paths are present.
CD
Green
Off
Loss of carrier on the fiber. The A500 detects
only if the A500-receive (right-hand) fiber is
not working. The state of the A500-transmit
(left hand) fiber is not detected.
CD
Green
Steady on
Normal state. There is a optical carrier
detected on the fiber from the TN230X.
RPRD
Amber
Off
Normal state
Power Supply
AC OK
Green
Steady on
Normal state. AC power is okay.
DC OK
Green
Steady on
Normal state. DC power is okay.
Table 61: A500 LED Quick Reference
Component
Label
Color
State
Meaning
(2 of 2)
Summary of Contents for CMC1
Page 1: ...Maintenance Procedures 555 245 103 Issue 1 1 December 2003 ...
Page 14: ...Contents 14 Maintenance Procedures December 2003 ...
Page 416: ...Additional maintenance procedures IP Telephones 416 Maintenance Procedures December 2003 ...
Page 426: ...Index X 426 Maintenance Procedures December 2003 ...