12-08-2011 01:37 PM - edited 03-04-2019 02:34 PM
Hi I have a fiber mux that converts the signal into DS3 which is terminated on a cisco 6513, IOS 12.2(18)SXF14, WS-X6582-2PA module.
From the Mux to the Cisco its about 10 feet, I have no control of the mux fyi. Out of this Mux I have 3 DS3, two of them have a lot more C-bit/P-bit errors then I think should be there. On the other DS3 I have a 10 db anttenuator and im seeing some on occasion but alot less.
for example on the DS3s with no attenuator i see
Total Data (last 10 15 minute intervals):
0 Line Code Violations, 7 P-bit Coding Violation,
7 C-bit Coding Violation,
5 P-bit Err Secs, 0 P-bit Sev Err Secs,
0 Sev Err Framing Secs, 0 Unavailable Secs,
5 Line Errored Secs, 5 C-bit Errored Secs, 0 C-bit Sev Err Secs
but the DS3 with the 10db attenutor shows no errors
Total Data (last 10 15 minute intervals):
0 Line Code Violations, 0 P-bit Coding Violation,
0 C-bit Coding Violation,
0 P-bit Err Secs, 0 P-bit Sev Err Secs,
0 Sev Err Framing Secs, 0 Unavailable Secs,
0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Sev Err Secs
The same is true for a 24 hour period, i might see a few errors on the circuit with the 10 db attenuator but a lot more on the circuits with no attenutor.
Is there a way on the 6500 for me to see how much input signal power the PA is taking in so I can look up if its within the cisco DS3 PA specifications?
Solved! Go to Solution.
12-12-2011 07:59 AM
Which port adapter are you using?
I think you need a meter for this one.
12-12-2011 07:59 AM
Which port adapter are you using?
I think you need a meter for this one.
12-14-2011 11:48 AM
Vmiller its a regular PA-2T3.
Just wanted to update that indeed the issue was related to the incoming signal to the RX PA port being too strong. After placing 10db attenuators on the PA ports all P/C-bit errors are gone.
Accidently marked Vmiller's message as the correct answer, the above statement is the actually correct answer.
paul
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