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Noise on VoIP Circuit

Hi all,

We have a number of 1761s all fitted with four VIC2EMs, some are fitted with PVDM 16s and some are fitted with one PVDM4 and one PVDM12. Those routers fitted with a 4 & 12 will occasionally transmit as loud warbling noise over the Network to the other router. The noise can only be silenced by a "shut" "no shut" on the voice port.

Is this a symptom of a single circuit being split over the two PVDMs?

Has anyone any Ideas?

Thanks for any help

Paul

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Paul Smart
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