Malicious Call Trace

Last Updated : Feb 17, 2020 |
Prolog information
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Keywords:
  • CS 1000 endpoint user experience
    Administration
    CS 1000 is configured to support Malicious Call Traces (MCT). This includes any trunks capable of sending MCT signaling. Options include local recording trunks, logging devices, disconnect delay times, and other items based on national requirements.
    FAC capability is defined for analog, digital, and UNIStim users without the trace key. Two primary options exist:
    • The system prefix is configured. SPRE + 83 triggers call trace.
    • An FFC (equivalent to Feature Access Code) is configured as MTRC (Malicious call TRaCe).
    Endpoints are configured to support MCT.
    • The MCTA (Malicious Call Trace Allowed) class of service is required. This applies to analog, digital, and UNIStim endpoints.
    • Digital and UNIStim endpoints can have a CallTrace key provided.
      • The CallTrace key cannot be a soft key on an endpoint.
      • The CallTrace key does not require a lamp or icon.
    User operation
    To trace a malicious call from an analog (500/2500-type) phone:
    1. User is on a call and determines that the call is malicious.
    2. Flash the switchhook. A special dial tone signifies that the call is on hold.
    3. Enter SPRE+83 or the FFC. You are reconnected to the call.
    To trace a malicious call from a digital or UNIStim phone using Special Prefix (SPRE) code or FFC:
    1. User is on a call and determines that the call is malicious.
    2. Press Transfer or Conference. A special dial tone signifies that the call is on hold.
    3. Enter SPRE+83 or the FFC. You are reconnected to the call.
    To trace a malicious call from a digital or UNIStim phone using the CallTrace key:
    1. User is on a call and determines that the call is malicious.
    2. Press the CallTrace key. You remain connected to the call.
  • Communication Manager endpoint user experience
    A user or an attendant can use either a feature button (mct-act) or a Feature Access Code (FAC) to activate MCT. Either the recipient of the call, or another user or attendant, can activate MCT.
    The mct-act button is effectively the same as the TRC key on the CS 1000. The MCT FAC is similar in function to the MCT FFC on CS 1000.
  • Device Adapter endpoint user experience
    Administration
    For information about MCT configuration, button administration, and FAC administration, see the Communication Manager documentation.
    Both Avaya Aura® and CS 1000 use a digit string to activate Malicious Call Trace on devices that do not have an MCT activation button. Avaya Aura® uses an FAC and CS 1000 uses an FFC (or Special Prefix and a digit code) to configure the MCT activation button. To provide a similar user experience, Avaya recommends that administrators use the same digit string in the Communication Manager FAC as the one that was used in the CS 1000 MCT FFC (MTRC).
    Device Adapter presents a “MCT-ACT” CM feature button as the CallTrace key on the set. Pressing the CallTrace key starts the "Malicious Call Trace" feature.
    Avaya Aura® MCT requires a Malicious Call Trace controller to perform any additional operations that are required. To specify the MCT deactivation FAC and release all MCT resources, at least one non-SIP station is required. This non-SIP station can be a Communication Manager H.323 or digital station. MCT deactivation FAC is mandatory.
    For more information about MCT controller, see the Avaya Aura® Communication Manager Feature Description and Implementation guide.
    User operation
    To trace a malicious call from an analog (adapted CS 1000 500/2500-type) phone:
    1. User is on a call and determines that the call is malicious.
    2. Flash the switchhook. Dial tone signifies that the call is on hold.
    3. Enter the Malicious Call Trace activation FAC.
    4. When completed, a dial tone is heard. Press “#” (or enter your extension) to trace the call. A confirmation tone is given.
    5. You are reconnected to the call.
    To trace a malicious call from a digital or UNIStim phone by using the Malicious Call Trace activation FAC:
    1. User is on a call and determines that the call is malicious.
    2. Get a second call appearance (including using Transfer or Conference). Dial tone signifies that the call is on hold.
    3. Enter Malicious Call Trace activation FAC.
    4. When completed, a dial tone is heard. Press “#” (or enter your extension) to trace the call. A confirmation tone is given.
    5. You are reconnected to the call.
    To trace a malicious call from a digital or UNIStim phone by using the MCT CallTrace key:
    1. User is on a call and determines that the call is malicious.
    2. Press the CallTrace key. You remain connected to the call.
    To deactivate MCT by using the MCT deactivation FAC:
    1. MCT controller accepts the MCT controller request.
    2. Any additional operations are performed as per the MCT controller function.
    3. Go off-hook or select a call appearance.
    4. Enter the MCT deactivation FAC.
    5. A confirmation tone is heard.
    6. All resources are released.
For more information, see Malicious Call Trace in Appendix H: Call processing features and services.