Nick Voth wrote: > Hello folks, > > I need another set of eyes on this. We have a new channelized DS3 plugged in > to a Cisco 7206-VXR with a PA-MC-T3 card. We can't seem to get rid of the > Line Code Violations and P-bit Coding Violations. See what we've done below > this output... > > Here the output that shows the errors: > > show controller t3 > T3 4/0 is up. Hardware is CT3 single wide port adapter > CT3 H/W Version : 1.0.1, CT3 ROM Version : 1.1, CT3 F/W Version : 2.4.3 > FREEDM version: 1, reset 0 resurrect 0 > Applique type is Channelized T3 > Description: DS3-1 from XO > No alarms detected. > FEAC code received: No code is being received > Framing is M23, Line Code is B3ZS, Clock Source is Internal > Rx-error throttling on T1's ENABLED > Rx throttle total 0, equipment customer loopback > Data in current interval (611 seconds elapsed): > 2758 Line Code Violations, 1370 P-bit Coding Violation > 0 C-bit Coding Violation, 543 P-bit Err Secs > 0 P-bit Severely Err Secs, 0 Severely Err Framing Secs > 0 Unavailable Secs, 565 Line Errored Secs > 0 C-bit Errored Secs, 0 C-bit Severely Errored Secs > Total Data (last 3 15 minute intervals): > 13168 Line Code Violations, 6464 P-bit Coding Violation, > 0 C-bit Coding Violation, 2441 P-bit Err Secs, > 0 P-bit Severely Err Secs, 0 Severely Err Framing Secs, > 0 Unavailable Secs, 2507 Line Errored Secs, > 0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
Wow, that's a lot of errors. We've found two things: 1. You may need an attenuator on the receive side at the controller. 2. In one case we had Westell DS-3 smartjacks in the telco mux and discovered that the CT3 cards became unhappy when regeneration was enabled on the smartjack towards the CPE. These can be configured with a serial cable plugged in to the DB-9 port on the smartjack, simple menu interface. -- Jay Hennigan - CCIE #7880 - Network Engineering - [EMAIL PROTECTED] Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
