@Phong Vu I have seen you mentioning telephony session event here. Is there a document explaining how we can do this?

The '/presence?detailedTelephonyState=true' event filter won't give you all details of a call session. Use the /telephony/sessions/ event filter instead.

Look for an event like this to determine a warm transfer event and map the session ids or telephony session ids.

Remember that a call recording is not automatically continued (if auto-recording feature is not enabled) after the call is transferred to a new agent.

{

  "body":{"sequence":9,

    "sessionId":"600398999016", // origin session id

    "telephonySessionId":"s-6885fcf7ff48428db455027955a59901", // origin tel session id

    "parties":[

      {

        "accountId":"80964xxxx","extensionId":"59586xxxx",

        "id":"p-6885fcf7ff48428db455027955a59901-2",

        "direction":"Inbound",

        "to":{"phoneNumber":"+1209248xxxx","name":"Agent 120","extensionId":"59586xxxx"},

        "from":{"phoneNumber":"+1650513xxxx","name":"Phong Vu"},

        "status":{

          "code":"Gone",

          "reason":"AttendedTransfer",

          "peerId":{

            "telephonySessionId":"s-5e9ea55d51ca43c5b555093b98e6be64", // new tel session id

            "sessionId":"600400135016", // new session id

            "partyId":"p-5e9ea55d51ca43c5b555093b98e6be64-1" // new party id

            },

          "rcc":false

        },

        "park":{},"missedCall":false,"standAlone":false,"muted":false}],"origin":{"type":"Call"}}

}