UC320W is disconnecting Calls.

Unanswered Question
Feb 7th, 2013
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We have a UC320W with firmware 2.3.2 firmware.

we have 2 analog trunks coming in to ports 1& 2 of the FXO ports and are connecting to shared FXO ports available to all phones.

I've tried testing the FXO ports with the internal tests and they appear perfectly functional.

We are constantly getting incoming calls disconnected. Incoming calls will ring and when we pick up there is no one there, and the customers call in again complaining of being disconnected.

I've tried changing internal building wiring and the ports that the analog trunks connect to.

We have discovered that the incoming calls are coming in at 53 volts, and I believe that the UC320 will disconnect if the voltage is higher than 48.

Can any confirm that this is true, or if they know any other reasons why calls would constantly be disconnected.



Thanks


System contains:

1 - UC320W

8 - SPA504G

1 - ESW520 POE 8 port switch


Included a Copy of the site programming

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