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matthew-simpson avatar image
matthew-simpson asked ·

Caller can't hear me

Polycom VVX-310 phone. Gigabit Ethernet connection. at least 150Mbps synchronous fiber internet connection. Power cycled via pulling power cord. Rebooted phone. still having trouble with caller not being able to hear user.
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bjsvec answered ·
In my experience this will be a network configuration issue or a loose handset cable/bad phone.  You should be able to rule out the phone pretty quick by trying speaker and handset and checking the handset cord.  Assuming it may be firewall related, what model firewall do you use and do you manage it?
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matthew-simpson answered ·
We are using MicroTik routers, and are on an MPLS managed fiber WAN network. I've sent the network requirements to the folks that manage the routers for us so they can make the appropriate changes to help the issue. Hopefully that will help out. We had already tried a different handset and using speakerphone mode.
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