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scrizo Offline OP
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Have a Televantage system, and the windows event log is showing that the D channel went down and came back up 44 seconds later, it also seems that it is hard to troubleshoot why calls would drop having 4 PRI's all dialogic cards, replaced wiring on one card, and connector on another, circuit tests come back clean

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If the D channel went down every T-1 PRI it's controlling would drop calls, you may only have one D channel.


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What Bill said. 1 PRI=23B+1D. 4 PRIs=92B+1D.

Some carriers are known to give you 1 D channel with each PRI, some only 1.

Inquire of your carrier.

They should also have error logs and be able to tell you what caused the D channel to drop.

Who is your Carrier, BTW?

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FAS = 1D per 23Bs.
MFAS = 1D for more than 23Bs.


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scrizo Offline OP
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Carrier is AccessOne

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The issue is 44 second down time and combing back up isn't long enough for it produce data for them to gather, they sent the circuits to AT&T to test and they are clean

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scrizo Offline OP
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They are giving us 1 D channel per PRI

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You need to ask the carrier to dispatch a tech with a Tbird or equivalent PRI tester to determine the exact cause of the problem. To lose 4 D channels at the same time kind of points to a common issue like a Smart Jack nest with outboard power supply that might have gone bad.

Rcaman


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scrizo Offline OP
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They stated that the smart jack tests come back clean, it's only 1 PRI card that loses the D channel for 44 seconds, even removing the problem card we still see issues. even though they say there tests come back OK from the circuit

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Of course their remote tests come back clean. They can only see a very short time period. You should demand a tech be sent to the site and do a stress test FROM THE SITE. That is the ONLY way they can see if there's a problem on the span.

Rcaman


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