The XTS pri combo card, when it first hit the market, used to have this kind of problem, recordings saying circuit busy, phone company problems, etc. It was caused by the combo card throwing timing errors. Later versions of the same card worked fine unless timing came from the system as opposed to the provider network.
LED 3 on the MBUID board in the Summit should be on (green) which indicates the built in PLLU is getting timing from the network, off indicates timing from internal clock and if off you could get errors and slips.
Last edited by Derrick; 12/16/15 10:34 PM.
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