ack not received from

  1. Randomly, Incoming calls from SIP trunk are getting "CONGESTION" and 3CX is reporting ACK not received

    Hi, We are randomly (70% of all incoming calls) receiving a busy tone calling to any SIP trunk configured at that particular 3CX installation. Our SIP provider (Vitelity) is reporting a "CONGESTION" message from 3CX and 3CX is showing: 03/01/2021 3:07:05 PM - [CM503021]: Call(C:33): ACK is not...
    • ezamora
    • Thread
    • ack not received from congestion
    • Replies: 1
    • Forum: Other
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