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SPA400 Poor PSTN quality.

viewtekmsd
Level 1
Level 1

Hi all,

Having setup these systems before this is getting frustrating. I have SIP accounts working fine as needed, the SPA400 is a different story.

PSTN incoming is working but the quality is terrible.

There is a buzzing noise on PSTN calls (screenshot of SPA400 voice settings attached)

I have tried VAD on and off but that has not fixed the issue. The buzzing does not stop you from hearing the caller but makes it quite difficult. I am in Australia and believe I have the regional settings correct.

Any suggestions are appreciated.

Thanks

Michael

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