AVPs defined in the Sentinel VoLTE product

The Sentinel VoLTE product extends Sentinel Express and adds the following AVP.

OC-Terminating-Domain

The OC-Terminating-Domain AVP (AVP code 1005) is of type UTF8String and contains the value of the OC-Terminating-Domain Header SIP header.

OC-IMSSF-Call-Reference-Number

The OC-IMSSF-Call-Reference-Number AVP (AVP code 1046) is of type OctetString and contains the Call Reference Number used in queries to the HLR during the session.

OC-Conf-Type

The OC-Conf-Type AVP (AVP code 2008) is of type Enumerated and indicates what media a conference was initiated with.

It can be one of the following:

  • VOICE = 0

  • VIDEO = 1

AVPs defined in Sentinel Express

The following AVPs are defined in the Sentinel Express product, and are used in the Sentinel VoLTE product.

OC-Sentinel-Selection-Key

The OC-Sentinel-Selection-Key AVP (AVP code 1001) is of type UTF8String and contains the Sentinel Selection Key for the session.

OC-Play-Announcement-Id

The OC-Play-Announcement-Id AVP (AVP code 1002) is of type Integer32 and contains the ID of an announcement used during the session.

OC-Call-Type

The OC-Call-Type AVP (AVP code 1003) is of type Enumerated and specifies the type of trigger for the session.

It can be one of the following:

  • MOC = 1, the trigger was Originating

  • MOC_3RDPTY = 2, the trigger was a non-SIP third party call setup request (e.g. via HTTP)

  • MTC = 3, the trigger was Terminating

  • MFC = 4, the trigger was Forwarding

  • EMERGENCY_CALL = 9, the trigger was classified as emergency

OC-Service-Type

The OC-Service-Type AVP (AVP code 1004) is of type Enumerated and specifies the initiating message for the session.

It can be one of the following:

  • UNKNOWN = 1, the initiating reason is unknown

  • SipCall = 2, the session was initiated due to receipt of SIP INVITE

  • Subscription = 3, the session was initiated due to receipt of SIP SUBSCRIBE

  • Message = 5, the session was initiated due to receipt of SIP MESSAGE

OC-Charging-Result

The OC-Charging-Result AVP (AVP code 1006) is of type Integer32. It contains the value of the Diameter CCA result-code AVP. In case there was no Ro session, it will have the value of -1.

OC-OCS-Session-Id

The OC-OCS-Session-Id AVP (AVP code 1008) is of type UTF8String. It indicates a Session Id used to communicate with the OCS during the session.

OC-OCS-Session-Termination-Cause

The OC-OCS-Session-Termination-Cause AVP (AVP code 1009) is of type Integer32. It communicates the reason that the OCS (or mediation layer) terminated the Ro session. It can be one of the following:

  • NORMAL_SESSION_COMPLETION = 0, the session terminated normally.

  • ERROR_CCA = 1, the session was terminated due to a CCA error response.

  • CREDIT_LIMIT_REACHED = 2, the session was terminated due to Credit-Limit-Reached.

  • OCS_ABORT = 3, the session was terminated due to an ASR received from the OCS.

  • TCC_EXPIRED = 4, the session was terminated due to the Sentinel Tcc timer expiring.

  • CREDIT_CONTROL_FAILURE = 5, the session was terminated due to a failure generating CCR.

  • CLIENT_ABORT = 6, the session terminated due to a client request, typically as a result of an abnormal event.

OC-Sentinel-Error

The OC-Sentinel-Error AVP (AVP code 1010) is of type Enumerated.

It can be one of the following:

  • None = 1

  • OcsTimeout = 2

  • OcsCommunicationFailure = 3

  • SentinelOverload = 4

  • ProtocolError = 5

  • InternalError = 6

  • MappingError = 7

  • OtherError = 8

If there is a Credit Control Answer, and it has an Experimental Result Code, and that has an OpenCloud vendor ID, then this AVP is filled.

OC-Charging-Instance

The OC-Charging-Instance AVP (AVP code 1011) is of type Grouped. An OC-Charging-Instance AVP represents an online charging instance used during the session.

OC-Charging-Instance ::= < AVP Header: 1011 >
                         [ OC-Charging-Instance-Name ]
                        *[ OC-Session-Counter ]

OC-Charging-Instance-Name

The OC-Charging-Instance-Name AVP (AVP code 1012) is of type UTF8String. It represents the name of an OC-Charging-Instance.

OC-Session-Counter

The OC-Session-Counter AVP (AVP code 1013) is of type Grouped. It represents a Session Counter used during the session.

OC-Session-Counter ::= < AVP Header: 1013 >
                          *[ OC-Session-Counter-Address ]
                           [ OC-Cumulative-Committed-Used ]
                           [ OC-Cumulative-Granted ]
                           [ OC-Cumulative-Granted-Refund ]
                           [ OC-Cumulative-Requested ]
                           [ OC-Cumulative-Requested-Refund ]
                           [ OC-Cumulative-Sent-Used ]
                           [ OC-Cumulative-Suspended-Duration ]
                           [ OC-Reported-Used ]
                           [ OC-End-Time ]
                           [ OC-Pending-Requested ]
                           [ OC-Start-Time ]

OC-Session-Counter-Address

The OC-Session-Counter-Address AVP (AVP code 1014) is of type Grouped. It represents a Session Counter address field, as documented in Session counter structure.

OC-Session-Counter-Address ::= < AVP Header: 1014 >

                                   [ OC-Session-Counter-Address-Key ]
                                   [ OC-Session-Counter-Address-Value ]

OC-Session-Counter-Address-Key

The OC-Session-Counter-Address-Key AVP (AVP code 1015) is of type UTF8String.

OC-Session-Counter-Address-Value

The OC-Session-Counter-Address-Value AVP (AVP code 1016) is of type UTF8String.

OC-Cumulative-Committed-Used

The OC-Cumulative-Committed-Used AVP (AVP code 1017) is of type Integer64.

It contains the value of the cumulativeCommittedUsed unit counter documented in Session counter structure.

OC-Cumulative-Granted

The OC-Cumulative-Granted AVP (AVP code 1018) is of type Integer64.

It contains the value of the cumulativeGranted unit counter documented in Session counter structure.

OC-Cumulative-Granted-Refund

The OC-Cumulative-Granted-Refund AVP (AVP code 1019) is of type Integer64.

It contains the value of the cumulatedGrantedRefund unit counter documented in Session counter structure.

OC-Cumulative-Requested

The OC-Cumulative-Request AVP (AVP code 1020) is of type Integer64.

It contains the value of the cumulatedRequested unit counter documented in Session counter structure.

OC-Cumulative-Requested-Refund

The OC-Cumulative-Requested-Refund AVP (AVP code 1021) is of type Integer64.

It contains the value of the cumulativeRequestedRefund unit counter documented in Session counter structure.

OC-Cumulative-Sent-Used

The OC-Cumulative-Sent-Used AVP (AVP code 1022) is of type Integer64. It contains the cumulative used units sent to the OCS for the Session Counter.

It contains the value of the cumulativeSentUsed unit counter documented in Session counter structure.

OC-Cumulative-Suspended-Duration

The OC-Cumulative-Suspended-Duration AVP (AVP code 1023) is of type Integer64.

It contains the value of the cumulativeSuspendedDuration field documented in Session counter structure.

OC-Reported-Used

The OC-Reported-Used AVP (AVP code 1024) is of type Integer64.

It contains the value of the reportedUsed field documented in Session counter structure.

OC-Pending-Requested

The OC-Pending-Requested AVP (AVP code 1025) is of type Integer64.

It contains the value of the pendingRequested unit counter documented in Session counter structure.

OC-Start-Time

The OC-Start-Time AVP (AVP code 1026) is of type Time.

It contains the value of the startTime field documented in Session counter structure.

OC-End-Time

The OC-End-Time AVP (AVP code 1027) is of type Time.

It contains the value of the endTime field documented in Session counter structure.

OC-Event-Id

The OC-Event-Id AVP (AVP code 1028) is of type UTF8String.

If the initial request for the Session was a SIP SUBSCRIBE or SIP NOTIFY request, this is set to the value of the Event: header in the initial request.

If the initial request for the Session was a SIP REFER request, this is set to the CSeq of the REFER request.

OC-Call-Id

The OC-Call-Id AVP (AVP code 1029) is of type UTF8String. This is set to the Call-ID of the initial SIP request for the Session.

OC-End-Session-Cause

The OC-End-Session-Cause AVP (AVP code 1036) is of type Integer32. This is set to indicate the reason a service or feature ended the session.

If the LegManager.endSession instruction is called with a cause value, the AVP value is set to the cause value.

Otherwise, if the session state field endSessionCause is set, the AVP value is set to the session state value.

OC-Interim-CDR-Trigger

The OC-Interim-CDR-Trigger AVP (AVP code 1037) is a repeated AVP of type Grouped and appears only in interim CDRs. Each occurrence indicates a reason for writing an Interim CDR and the leg for which the reason applies.

OC-Interim-CDR-Trigger ::= < AVP Header: 1037 >

                                   [ OC-Interim-CDR-Reason ]
                                   [ OC-Interim-CDR-Leg ]

OC-Interim-CDR-Reason

The OC-Interim-CDR-Reason AVP (AVP code 1038) is of type UTF8String.

OC-Interim-CDR-Leg

The OC-Interim-CDR-Leg AVP (AVP code 1039) is of type UTF8String.

OC-Session-Start-Time

The OC-Session-Start-Time AVP (AVP code 1040) is of type Time.

It contains the time that the session’s Initial Request was processed.

OC-Session-Established-Time

The OC-Session-Established-Time AVP (AVP code 1041) is of type Time.

It contains the time that the session was answered, that is the ACK to the 2xx-INVITE was processed.

OC-Session-End-Time

The OC-Session-End-Time AVP (AVP code 1042) is of type Time.

It contains the time that the session was ended.

OC-Age-Of-Information

The OC-Age-Of-Information AVP (AVP code 1060) is of type Integer64. The time in milliseconds of the source information. The value depends on which of the grouped AVP’s contains the OC-Age-Of-Information.

OC-MCC-MNC

The OC-MCC-MNC AVP (AVP code 1061) is of type UTF8String. The length is 5 or 6 digits depending on the value of MNC, that can be 2 or 3. It is encoded as UTF8String characters representing the IMSI MCC-MNC numerical values. In accordance with 3GPP TS 29.060 24 (for GGSN), 3GPP TS 29.274 81 (for P-GW) and 3GPP TS 23.003 40, the MCC is 3 digits and the MNC is either 2 or 3 digits. There are no padding characters between the MCC and MNC.

OC-Access-Network-MCC-MNC

The OC-Access-Network-MCC-MNC (AVP code 1062) indicates the home network MCC-MNC, in case the access network can be identified. The information is extracted from the P-Access-Network-Info header.In the event that the P-Access-Network-Header header is not present the information can be extracted from registration records. It is a grouped AVP formed by:

  • OC-MCC-MNC

  • OC-Age-Of-Information

The OC-Age-Of-Information is the registration time.

OC-Visited-Network-MCC-MNC

The OC-Visited-Network-MCC-MNC (AVP code 1063) indicates the visited network MCC-MNC, in case the visited network can be identified. This information is extracted from the P-Visited-Network-Id header. In the event that the P-Visited-Network-Id header is not present the information can be extracted from registration records. It is a grouped AVP formed by:

  • OC-MCC-MNC

  • OC-Age-Of-Information

The OC-Age-Of-Information is the registration time.

OC-IMSI-MCC-MNC

The OC-IMSI-MCC-MNC (AVP code 1064) is extracted from the IMSI and indicates the network related to the subscriber’s IMSI. It is a grouped AVP formed by:

  • OC-MCC-MNC

  • OC-Age-Of-Information

The OC-Age-Of-Information is:

  • registration time

  • SRI response time in case it is extracted from the SRI response.

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Sentinel VoLTE Public Version 2.7.0