使用 Amazon Chime SDK PSTN 音频服务结束呼叫

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使用 Amazon Chime SDK PSTN 音频服务结束呼叫 - Amazon Chime SDK

你可以使用 CreateSipMediaApplicationCall用于结束外呼的 API。API 调用指定 SIP 媒体应用程序 ID 的终端节点。客户可以通过向 SIP 媒体应用程序返回操作来控制呼叫流程。

如果响应成功，API 会返回一个 202 http 状态码以及transactionId，您可以将其与 UpdateSipMediaApplicationCall用于更新正在进行的呼叫的 API。

下图显示了出站呼叫对 AWS Lambda 函数端点进行的调用。

调用 CreateSipMediaApplicationCall API 时的数据流。当出站呼叫的状态发生变化时，API 会调用不同的终端节点。

针对出站呼叫的不同状态调用为 SIP 媒体应用程序配置的终端节点。当客户结束呼叫时，Amazon Chime SDK 会使用 HANGUP 调用事件类型调用终端节点。

此示例显示 HANGUP 的典型调用事件。


{
    "SchemaVersion": "1.0",
    "Sequence": 6,
    "InvocationEventType": "HANGUP",
    "ActionData": {
        "Type": "Hangup",
        "Parameters": {
            "CallId": "call-id-1",
            "ParticipantTag": "LEG-A"
        }
    },
    "CallDetails": {
        "TransactionId": "transaction-id",
        "AwsAccountId": "aws-account-id",
        "AwsRegion": "us-east-1",
        "SipRuleId": "sip-rule-id",
        "SipApplicationId": "sip-application-id",
        "Participants": [
            {
                "CallId": "call-id-1",
                "ParticipantTag": "LEG-A",
                "Direction": "Inbound",
                 "To": "+12065551212",
                "From": "+15105550101",
                "StartTimeInMilliseconds": "1597009588",
                "Status": "Disconnected"
            }
        ]
    }
}

// if LEG-B receives a hangup in a bridged call, such as a meeting ending
{
    "SchemaVersion": "1.0",
    "Sequence": 6,
    "InvocationEventType": "HANGUP",
    "ActionData": {
        "Type": "ReceiveDigits",
        "Parameters": {
            "CallId": "call-id-2",
            "ParticipantTag": "LEG-B"
        }
    },
    "CallDetails": {
        "TransactionId": "transaction-id",
        "AwsAccountId": "aws-account-id",
        "AwsRegion": "us-east-1",
        "SipRuleId": "sip-rule-id",
        "SipApplicationId": "sip-application-id",
        "Participants": [
            {
                "CallId": "call-id-1",
                "ParticipantTag": "Leg-A",
                 "To": "+12065551212",
                "From": "+15105550101",
                "Direction": "Inbound",
                "StartTimeInMilliseconds": "1597009588",
                "Status": "Connected"
            },
            {
                "CallId": "call-id-2",
                "ParticipantTag": "Leg-B",
                "To": "+17035550122",
                "From": "SMA",
                "Direction": "Outbound",
                "StartTimeInMilliseconds": "15010595",
                "Status": "Disconnected"
            }
        ]
    }
}