intermittent voice

  1. Occasional one way audio

    3CX 15.5, ATT Sip Trunk, Sonicwall Firewall System has been up and running for 2 years without a problem. About a month ago, the system will stop receiving RTP packets from ATT. Callers can hear us but we can not hear them. Internal calls work just fine. I have opened a ticket with ATT...
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