Need help with noisy PRI

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Need help with noisy PRI #54519 03/08/06 06:16 AM
Joined: Feb 2005 Posts: 40 Dayton Ohio grdnwesl Member
grdnwesl Member Joined: Feb 2005 Posts: 40 Dayton Ohio	We have an Axxess 8.2 system and we have been experiencing popping and cracking noise on incoming and outgong Long distance calls. I looked at the circuit diagnostics on our T1/E1 PRIs and one of them is racking up several million errors per day. I did a system freeze and found the following info in the msg_prt_log: Quote -01:472- 10:44 03-08 * T1 [21.0.0] process_reference_clock_handshake - T1_REFERENCE_CLOCK_HANDSHAKE_DATA_SUPPLYING -01:473- 10:44 03-08 * Reason: PROVIDING CLOCK SYNC - PORT [21.1.0] -01:474- 10:44 03-08 * PRI Card [20.1.0] clock mode: Slave Not Providing Sync -01:475- 10:44 03-08 * PRI Card 20 state changed from Working to Dead-Wait -01:476- 10:44 03-08 M5086 WRN HW CP Daily Threshold For Controlled Slips Errors Exceeded on T1C Board [14.0.0] -01:477- 10:44 03-08 * PRI Card 20 state changed from Dead-Wait to Init Critical Error -01:478- 10:44 03-08 * Reason: STATE CHANGE - PORT [20.1.0] -01:479- 10:44 03-08 M8000 SVR HW CP Initial Trouble Condition Detected on PRI Board [20.0.0] -01:480- 10:44 03-08 M8001 SVR HW CP PRI Board Problem: Receiver Loss of Signal from Network -01:481- 10:44 03-08 * PRI Card 20 state changed from Init Critical Error to Working -01:482- 10:44 03-08 * Reason: STATE CHANGE - PORT [20.1.0] -01:483- 10:44 03-08 * PRI Card [20.1.0] clock mode: Slave Providing Sync -01:484- 10:44 03-08 M8002 SVR HW CP Initial Trouble Condition Cleared on PRI Board [20.0.0] -01:485- 10:44 03-08 * T1 [20.0.0] process_reference_clock_handshake - T1_REFERENCE_CLOCK_HANDSHAKE_DATA_ATTEMPTING -01:486- 10:44 03-08 * Reason: ATTEMPTING TO PROVIDE CLOCK SYNC - PORT [20.1.0] -01:487- 10:44 03-08 * PRI Card [21.1.0] clock mode: Slave Not Providing Sync -01:488- 10:44 03-08 * T1 [20.0.0] process_reference_clock_handshake - T1_REFERENCE_CLOCK_HANDSHAKE_DATA_SUPPLYING -01:489- 10:44 03-08 * Reason: PROVIDING CLOCK SYNC - PORT [20.1.0] -01:490- 10:44 03-08 * PRI Card [21.1.0] clock mode: Slave Providing Sync -01:491- 10:44 03-08 * T1 [21.0.0] process_reference_clock_handshake - T1_REFERENCE_CLOCK_HANDSHAKE_DATA_ATTEMPTING -01:492- 10:44 03-08 *** Reason: ATTEMPTING TO PROVIDE CLOCK SYNC - PORT [21.1.0] I have had our LD carrier looking into it as well as TWTC for our PRIs, but no one can tell me what the problem is. Please help Dan L Armstrong WinWholesale

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Re: Need help with noisy PRI #54520 03/08/06 07:04 AM
Joined: Sep 2005 Posts: 840 Portland, OR superfoneguy Member
superfoneguy Member Joined: Sep 2005 Posts: 840 Portland, OR	Your T-1 is running dirty. It is unlikely to be the PBX equipment. I would get the carrier on the horn and start doing a loop-back test at the PBX, then at the NI. If you can loop the T-1 card to itself and you get no errors than it is the span, the NI or the extension to the PBX from the NI.

Re: Need help with noisy PRI #54521 03/08/06 07:08 AM
Joined: Feb 2005 Posts: 40 Dayton Ohio grdnwesl Member
grdnwesl Member Joined: Feb 2005 Posts: 40 Dayton Ohio	What is NI? I'm kind of an amatuer here. Dan L Armstrong WinWholesale

Re: Need help with noisy PRI #54522 03/08/06 09:27 AM
Joined: Dec 2004 Posts: 192 Puyallup, WA, USA Andrea Ruane Member
Andrea Ruane Member Joined: Dec 2004 Posts: 192 Puyallup, WA, USA	NI/NIU = network interface unit/the provider's equipment. Depending on who you are dealing with, you might really get the runaround. Here's a suggestion to possibly narrow the problem to a specific channel on the span. Get your individual trunk numbers for each of your T1 channels and starting from the bottom of the list, directly access the channel by dialing the trunk number, i.e., don't hit Outgoing, hit 94071 - or whatever the trunk number is. You'll get dialtone, then call someone NOT IN YOUR COMPANY to check for static/noise. When you dial outbound, you're grabbing the last trunks, so you might want to start there and work your way up the list. Good luck! Andrea

Re: Need help with noisy PRI #54523 03/08/06 09:41 AM
Joined: Feb 2005 Posts: 40 Dayton Ohio grdnwesl Member
grdnwesl Member Joined: Feb 2005 Posts: 40 Dayton Ohio	Thank you for the info. I have had Time Wrner looking into it, but I'm not getting a lot of feedback, soI quess It's up to me. I will try your suggestion to see if I can eliminate trunks from the mix. Dan L Armstrong WinWholesale

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