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Snom phones support the following requests send to the phone:

Events

RequestSystemStatus

<RequestSystemStatus xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>

<?xml version="1.0" encoding="utf-8"?>
<RequestSystemStatusResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <systemStatus>normal</systemStatus>
</RequestSystemStatusResponse>

MonitorStart (device-type)

<MonitorStart xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <monitorObject>
    <deviceObject>sip:455455@ser.intern.snom.de</deviceObject>
  </monitorObject>
</MonitorStart>

<?xml version="1.0" encoding="utf-8"?>
<MonitorStartResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>43</monitorCrossRefID>
  <monitorExistingCalls>true</monitorExistingCalls>
</MonitorStartResponse>

MonitorStop (since 8.7.4)

<MonitorStop xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <monitorCrossRefID>43</monitorCrossRefID>
</MonitorStop>

<?xml version="1.0" encoding="utf-8"?>
<MonitorStopResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

SystemRegister (since 8.7.4)

<SystemRegister xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <requestTypes>
    <switchingFunctionDevicesChanged>true</switchingFunctionDevicesChanged>
  </requestTypes>
</SystemRegister>

<?xml version="1.0" encoding="utf-8"?>
<SystemRegisterResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <sysStatRegisterID>43</sysStatRegisterID>
</SystemRegisterResponse>

SnapshotDevice

<SnapshotDevice xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <snapshotObject>455455@ser.intern.snom.de</snapshotObject>
</SnapshotDevice>

<?xml version="1.0" encoding="utf-8"?>
<SnapshotDeviceResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <crossRefIDorSnapshotData>
    <snapshotData>
      <snapshotDeviceResponseInfo>
        <connectionIdentifier>
          <callID>-12</callID>
          <deviceID>sip:455455@ser.intern.snom.de</deviceID>
        </connectionIdentifier>
        <localCallState>
          <compoundCallState>
            <localConnectionState>alerting</localConnectionState>
          </compoundCallState>
        </localCallState>
      </snapshotDeviceResponseInfo>
    </snapshotData>
  </crossRefIDorSnapshotData>
</SnapshotDeviceResponse>

MakeCall

<MakeCall xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <callingDevice>sip:455455@ser.intern.snom.de</callingDevice>
  <calledDirectoryNumber>455360</calledDirectoryNumber>
  <autoOriginate>doNotPrompt</autoOriginate>
</MakeCall>

<?xml version="1.0" encoding="utf-8"?>
<MakeCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <callingDevice>
    <callID>2</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </callingDevice>
</MakeCallResponse>

callingDevice is the user_name@ pbx of a configured identity. When this field has an empty value, then the active identity is used to make the call. Otherwise the value is used to choose the identity by comparing the value with the configured user name of every identity.

ConsultationCall (since 8.7.4)

<ConsultationCall xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <existingCall>
    <callID>3</callID>
    <deviceID>sip:455370@ser.intern.snom.de</deviceID>
  </existingCall>
  <consultedDevice>455320</consultedDevice>
</ConsultationCall>

<?xml version="1.0" encoding="utf-8"?>
<ConsultationCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <initiatedCall>
    <callID>4</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </initiatedCall>
</ConsultationCallResponse>

AnswerCall

<AnswerCall xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"> 
  <callToBeAnswered>
    <callID>-17</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </callToBeAnswered>
</AnswerCall>

<?xml version="1.0" encoding="utf-8"?>
<AnswerCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

ClearConnection

<ClearConnection xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <connectionToBeCleared>
    <callID>2</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </connectionToBeCleared>
</ClearConnection>

<?xml version="1.0" encoding="utf-8"?>
<ClearConnectionResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

HoldCall

<HoldCall xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed4">
  <callToBeHeld>
    <callID>4</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </callToBeHeld>
</HoldCall>

<?xml version="1.0" encoding="utf-8"?>
<HoldCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

RetrieveCall

<RetrieveCall xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed4">
  <callToBeRetrieved>
    <callID>4</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </callToBeRetrieved>
</RetrieveCall>

<?xml version="1.0" encoding="utf-8"?>
<RetrieveCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

ConferenceCall

  <ConferenceCall xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed4">
  <heldCall>
    <callID>13</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </heldCall>
  <activeCall>
    <callID>14</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </activeCall>
</ConferenceCall>

<?xml version="1.0" encoding="utf-8"?>
<ConferenceCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <conferenceCall>
    <callID>14|13</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </conferenceCall>
  <connections>
    <connectionListItem>
      <newConnection>
        <callID>14|13</callID>
        <deviceID>sip:455455@ser.intern.snom.de</deviceID>
      </newConnection>
      <oldConnection>
        <callID>14</callID>
        <deviceID>sip:455455@ser.intern.snom.de</deviceID>
      </oldConnection>
    </connectionListItem>
    <connectionListItem>
      <newConnection>
        <callID>14|13</callID>
        <deviceID>sip:455820@ser.intern.snom.de</deviceID>
      </newConnection>
      <oldConnection>
        <callID>14</callID>
        <deviceID>sip:455820@ser.intern.snom.de</deviceID>
      </oldConnection>
    </connectionListItem>
    <connectionListItem>
      <newConnection>
        <callID>14|13</callID>
        <deviceID>sip:455370@ser.intern.snom.de</deviceID>
      </newConnection>
      <oldConnection>
        <callID>13</callID>
        <deviceID>sip:455370@ser.intern.snom.de</deviceID>
      </oldConnection>
    </connectionListItem>
  </connections>
</ConferenceCallResponse>

TransferCall

<TransferCall xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed4">
  <heldCall>
    <callID>16</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </heldCall>
  <activeCall>
    <callID>15</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </activeCall>
</TransferCall>

<?xml version="1.0" encoding="utf-8"?>
<TransferCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <transferredCall>
    <callID>how_should_i_know_4711</callID>
    <deviceID>sip:455370@ser.intern.snom.de</deviceID>
  </transferredCall>
</TransferCallResponse>

SingleStepTransferCall (since 8.7.4)

<SingleStepTransferCall xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <activeCall>
    <callID>2</callID>
    <deviceID>sip:455320@ser.intern.snom.de</deviceID>
  </activeCall>
  <transferredTo>455370</transferredTo>
</SingleStepTransferCall>

<?xml version="1.0" encoding="utf-8"?>
<SingleStepTransferCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <transferredCall>
    <callID>how_should_i_know_4711</callID>
    <deviceID>tel:455370</deviceID>
  </transferredCall>
</SingleStepTransferCallResponse>

DeflectCall (since 8.7.4)

<DeflectCall xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <callToBeDiverted>
    <callID>-4</callID>
    <deviceID>sip:455820@ser.intern.snom.de</deviceID>
  </callToBeDiverted>
  <newDestination>
    <device>455370</device>
  </newDestination>
</DeflectCall>

<?xml version="1.0" encoding="utf-8"?>
<DeflectCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

GenerateDigits (only dtmf)

<GenerateDigits>
  <connectionToSendDigits>
    <callID>2</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </connectionToSendDigits>
  <digitMode>DTMF</digitMode>
  <charactersToSend>1234</charactersToSend>
</GenerateDigits>

<?xml version="1.0" encoding="utf-8"?>
<GenerateDigitsResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

GetSwitchingFunctionDevices

<GetSwitchingFunctionDevices/>

<?xml version="1.0" encoding="utf-8"?>
<GetSwitchingFunctionDevicesResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <serviceCrossRefID>GSFD4711</serviceCrossRefID>
</GetSwitchingFunctionDevicesResponse>

2nd Answer (in uaCsta send via separate SIP-INFO, HTTP-CSTA appends this to initial answer):

<SwitchingFunctionDevices xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <serviceCrossRefID>GSFD4711</serviceCrossRefID>
  <lastSegment>true</lastSegment>
  <deviceList>
    <device>
      <deviceID>sip:455455@ser.intern.snom.de</deviceID>
    </device>
    <device>
      <deviceID>sip:455456@ser.intern.snom.de</deviceID>
    </device>
    <device>
      <deviceID>sip:455457@ser.intern.snom.de</deviceID>
    </device>
  </deviceList>
</SwitchingFunctionDevices>

GetDoNotDisturb (since 8.7.4)

<GetDoNotDisturb xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <device>sip:455455@ser.intern.snom.de</device>
</GetDoNotDisturb>

<GetDoNotDisturbResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <doNotDisturbOn>false</doNotDisturbOn>
</GetDoNotDisturbResponse>

SetDoNotDisturb (since 8.7.4)

<SetDoNotDisturb xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <device>sip:455455@ser.intern.snom.de</device>
  <doNotDisturbOn>false</doNotDisturbOn>
</SetDoNotDisturb>

<SetDoNotDisturbResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

GetForwarding (since 8.7.4)

<GetForwarding xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <device>sip:455455@ser.intern.snom.de</device>
</GetForwarding>

<?xml version="1.0" encoding="utf-8"?>
<GetForwardingResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <forwardingList>
    <forwardListItem>
      <forwardingType>forwardImmediate</forwardingType>
      <forwardStatus>true</forwardStatus>
      <forwardDN>tel:42</forwardDN>
    </forwardListItem>
    <forwardListItem>
      <forwardingType>forwardBusy</forwardingType>
      <forwardStatus>false</forwardStatus>
      <forwardDN/>
    </forwardListItem>
    <forwardListItem>
      <forwardingType>forwardNoAns</forwardingType>
      <forwardStatus>true</forwardStatus>
      <forwardDN>tel:66</forwardDN>
      <ringDuration>22</ringDuration>
    </forwardListItem>
  </forwardingList>
</GetForwardingResponse>

SetForwarding (since 8.7.4)

<SetForwarding xmlns='http://www.ecma-international.org/standards/ecma-323/csta/ed5' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
  <device>sip:455455@ser.intern.snom.de</device>
  <forwardingType>forwardImmediate</forwardingType>
  <activateForward>true</activateForward>
  <forwardDN>42</forwardDN>
  <ringDuration></ringDuration>
</SetForwarding>

<SetForwardingResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5"/>

SnapshotCall (since 10.1.37.0)

To get the Call-ID before running SnapshotCall:

<SnapshotDevice>
<snapshotObject>482735035@172.20.1.7</snapshotObject>
</SnapshotDevice>

<?xml version="1.0" encoding="utf-8"?>
<SnapshotDeviceResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
<crossRefIDorSnapshotData>
<snapshotData>
<snapshotDeviceResponseInfo>
<connectionIdentifier>
<callID>50</callID>
<deviceID>sip:482735035@172.20.1.7</deviceID>
</connectionIdentifier>
<localCallState>
<compoundCallState>
<localConnectionState>connected</localConnectionState>
</compoundCallState>
</localCallState>
</snapshotDeviceResponseInfo>
</snapshotData>
</crossRefIDorSnapshotData>
</SnapshotDeviceResponse>

Then run SnapshotCall:

<SnapshotCall>
<snapshotObject>
<callID>50</callID>
</snapshotObject>
</SnapshotCall>

<?xml version="1.0" encoding="utf-8"?>
<SnapshotCallResponse xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
<crossRefIDorSnapshotData>
<snapshotData>
<snapshotCallResponseInfo>
<deviceOnCall>
<deviceIdentifier>sip:482735035@172.20.1.7</deviceIdentifier>
</deviceOnCall>
<callIdentifier>
<callID>50</callID>
<deviceID>sip:482735035@172.20.1.7</deviceID>
</callIdentifier>
<localConnectionInfo>connected</localConnectionInfo>
</snapshotCallResponseInfo>
<snapshotCallResponseInfo>
<deviceOnCall>
<deviceIdentifier>sip:482735001@172.20.1.7</deviceIdentifier>
</deviceOnCall>
<callIdentifier>
<callID>50</callID>
<deviceID>sip:482735001@172.20.1.7</deviceID>
</callIdentifier>
<localConnectionInfo>alerting</localConnectionInfo>
</snapshotCallResponseInfo>
</snapshotData>
</crossRefIDorSnapshotData>
</SnapshotCallResponse>

Requests

Snom phones may send the following request to a connected client:

SwFunctionDevicesChanged (since 8.7.4, set up via SystemRegister)

<?xml version="1.0" encoding="utf-8"?>
<SwFunctionDevicesChanged xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <sysStatRegisterID>43</sysStatRegisterID>
</SwFunctionDevicesChanged>

Answer: should be an empty 200-OK (uaCSTA)

Events

Snom phones may send the following events to a connected client:

ServiceInitiated

<?xml version="1.0" encoding="utf-8"?>
<ServiceInitiatedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>44</monitorCrossRefID>
  <initiatedConnection>
    <callID>9</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </initiatedConnection>
  <initiatingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </initiatingDevice>
  <localConnectionInfo>initiated</localConnectionInfo>
  <cause>normal</cause>
</ServiceInitiatedEvent>

Originated

<?xml version="1.0" encoding="utf-8"?>
<OriginatedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>43</monitorCrossRefID>
  <originatedConnection>
    <callID>3</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </originatedConnection>
  <callingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </callingDevice>
  <calledDevice>
    <deviceIdentifier>sip:455370@ser.intern.snom.de</deviceIdentifier>
  </calledDevice>
  <localConnectionInfo>connected</localConnectionInfo>
  <cause>normal</cause>
</OriginatedEvent>

Delivered

<?xml version="1.0" encoding="utf-8"?>
<DeliveredEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>43</monitorCrossRefID>
  <connection>
    <callID>3</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </connection>
  <alertingDevice>
    <deviceIdentifier>sip:455370@ser.intern.snom.de</deviceIdentifier>
  </alertingDevice>
  <callingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </callingDevice>
  <calledDevice>
    <deviceIdentifier>sip:455370@ser.intern.snom.de</deviceIdentifier>
  </calledDevice>
  <lastRedirectionDevice>
    <notKnown/>
  </lastRedirectionDevice>
  <localConnectionInfo>connected</localConnectionInfo>
  <cause>normal</cause>
</DeliveredEvent>

Established

<?xml version="1.0" encoding="utf-8"?>
<EstablishedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>43</monitorCrossRefID>
  <establishedConnection>
    <callID>3</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </establishedConnection>
  <answeringDevice>
    <deviceIdentifier>sip:455370@ser.intern.snom.de</deviceIdentifier>
  </answeringDevice>
  <callingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </callingDevice>
  <calledDevice>
    <deviceIdentifier>sip:455370@ser.intern.snom.de</deviceIdentifier>
  </calledDevice>
  <lastRedirectionDevice>
    <notKnown/>
  </lastRedirectionDevice>
  <localConnectionInfo>connected</localConnectionInfo>
  <cause>normal</cause>
</EstablishedEvent>

Failed

<?xml version="1.0" encoding="utf-8"?>
<FailedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>45</monitorCrossRefID>
  <failedConnection>
    <callID>10</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </failedConnection>
  <failingDevice>
    <deviceIdentifier>sip:455360@ser.intern.snom.de</deviceIdentifier>
  </failingDevice>
  <callingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </callingDevice>
  <calledDevice>
    <deviceIdentifier>sip:455360@ser.intern.snom.de</deviceIdentifier>
  </calledDevice>
  <localConnectionInfo>fail</localConnectionInfo>
  <cause>busy</cause>
</FailedEvent>

ConnectionCleared

<?xml version="1.0" encoding="utf-8"?>
<ConnectionClearedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>44</monitorCrossRefID>
  <droppedConnection>
    <callID>9</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </droppedConnection>
  <releasingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </releasingDevice>
  <localConnectionInfo>null</localConnectionInfo>
  <cause>normalClearing</cause>
</ConnectionClearedEvent>

Held

<?xml version="1.0" encoding="utf-8"?>
<HeldEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>46</monitorCrossRefID>
  <heldConnection>
    <callID>11</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </heldConnection>
  <holdingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </holdingDevice>
  <localConnectionInfo>hold</localConnectionInfo>
  <cause>normal</cause>
</HeldEvent>

Retrieved

<?xml version="1.0" encoding="utf-8"?>
<RetrievedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>43</monitorCrossRefID>
  <retrievedConnection>
    <callID>3</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </retrievedConnection>
  <retrievingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </retrievingDevice>
  <localConnectionInfo>connected</localConnectionInfo>
  <cause>normal</cause>
</RetrievedEvent>

Conferenced

<?xml version="1.0" encoding="utf-8"?>
<ConferencedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>46</monitorCrossRefID>
  <primaryOldCall>
    <callID>12</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </primaryOldCall>
  <secondaryOldCall>
    <callID>11</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </secondaryOldCall>
  <conferencingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </conferencingDevice>
  <conferenceConnections>
    <connectionListItem>
      <newConnection>
        <callID>12|11</callID>
        <deviceID>sip:455820@ser.intern.snom.de</deviceID>
      </newConnection>
      <oldConnection>
        <callID>12</callID>
        <deviceID>sip:455820@ser.intern.snom.de</deviceID>
      </oldConnection>
    </connectionListItem>
    <connectionListItem>
      <newConnection>
        <callID>12|11</callID>
        <deviceID>sip:455360@ser.intern.snom.de</deviceID>
      </newConnection>
      <oldConnection>
        <callID>11</callID>
        <deviceID>sip:455360@ser.intern.snom.de</deviceID>
      </oldConnection>
    </connectionListItem>
    <connectionListItem>
      <newConnection>
        <callID>12|11</callID>
        <deviceID>sip:455455@ser.intern.snom.de</deviceID>
      </newConnection>
      <oldConnection>
        <callID>11</callID>
        <deviceID>sip:455455@ser.intern.snom.de</deviceID>
      </oldConnection>
    </connectionListItem>
  </conferenceConnections>
  <localConnectionInfo>connected</localConnectionInfo>
  <cause>normal</cause>
</ConferencedEvent>

Transfered

Was written with two 'r's in firmware versions < 8.7.3.18
New firmwares may also use double-r by setting csta_legacy_control to <= 2

Firmware versions 8.7.4.1, 8.7.4.2, 8.7.4.3, 8.7.4.4 and 8.7.4.5 always spell with single r no matter what csta_legacy_control is set to

<?xml version="1.0" encoding="utf-8"?>
<TransferedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>44</monitorCrossRefID>
  <primaryOldCall>
    <callID>4</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </primaryOldCall>
  <secondaryOldCall>
    <callID>5</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </secondaryOldCall>
  <transferringDevice>
    <deviceIdentifier>sip:455870@ser.intern.snom.de</deviceIdentifier>
  </transferringDevice>
  <transferredToDevice>
    <deviceIdentifier>sip:455360@ser.intern.snom.de</deviceIdentifier>
  </transferredToDevice>
  <transferredConnections>
    <connectionListItem/>
  </transferredConnections>
  <localConnectionInfo>null</localConnectionInfo>
  <cause>normal</cause>
</TransferedEvent>

DigitsGenerated

<?xml version="1.0" encoding="utf-8"?>
<DigitsGeneratedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>45</monitorCrossRefID>
  <connection>
    <callID>6</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </connection>
  <digitGeneratedList>2</digitGeneratedList>
</DigitsGeneratedEvent>

Diverted (since 8.7.4)

<?xml version="1.0" encoding="utf-8"?>
<DivertedEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>45</monitorCrossRefID>
  <connection>
    <callID>-4</callID>
    <deviceID>sip:455455@ser.intern.snom.de</deviceID>
  </connection>
  <divertingDevice>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </divertingDevice>
  <newDestination>
    <deviceIdentifier>sip:455370@ser.intern.snom.de</deviceIdentifier>
  </newDestination>
  <lastRedirectionDevice>
    <notKnown/>
  </lastRedirectionDevice>
  <localConnectionInfo>null</localConnectionInfo>
  <cause>normal</cause>
</DivertedEvent>

DoNotDisturb (since 8.7.4)

<?xml version="1.0" encoding="utf-8"?>
<DoNotDisturbEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>44</monitorCrossRefID>
  <device>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </device>
  <doNotDisturbOn>false</doNotDisturbOn>
</DoNotDisturbEvent>

Forwarding (since 8.7.4)

<?xml version="1.0" encoding="utf-8"?>
<ForwardingEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>44</monitorCrossRefID>
  <device>
    <deviceIdentifier>sip:455455@ser.intern.snom.de</deviceIdentifier>
  </device>
  <forwardingType>forwardImmediate</forwardingType>
  <forwardStatus>true</forwardStatus>
  <forwardTo>tel:42</forwardTo>
</ForwardingEvent>
The following forward types are supported for the forwardingType parameter:
forwardImmediate
forwardNoAns
forwardBusy

OutOfService (since 8.7.4)

<?xml version="1.0" encoding="utf-8"?>
<OutOfServiceEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>45</monitorCrossRefID>
  <device>
    <deviceIdentifier>sip:455458@ser.intern.snom.de</deviceIdentifier>
  </device>
</OutOfServiceEvent>

BackInService (since 8.7.4)

<?xml version="1.0" encoding="utf-8"?>
<BackInServiceEvent xmlns="http://www.ecma-international.org/standards/ecma-323/csta/ed5">
  <monitorCrossRefID>45</monitorCrossRefID>
  <device>
    <deviceIdentifier>sip:455456@ser.intern.snom.de</deviceIdentifier>
  </device>
</BackInServiceEvent>