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No audio on a Yealink phone

You can't hear the caller, or they can't hear you.

Work out if it's the phone or the network.

Steps

  1. Try the handset, the speaker and a headset.If only one fails, it's that device or its cable.
  2. Check the Mute key isn't lit.
  3. If calls have no sound in one or both directions, it's usually the network.Turn off SIP ALG on your router.
  4. Test a call to another extension.If internal calls work but outside calls don't, ask your provider to check.
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