The AVPs used by Sentinel IPSMGW in the credit control request are described.

Sentinel IPSMGW Service population of Credit Control Request

The Credit Control Request message is defined according to IETF RFC 4006, and some AVPs are removed and not used according to 3GPP TS 32.299. Sentinel products use the definition in 3GPP TS 32.299 v8.13.0 for CCR.

This table indicates the top-level AVPs inside a CCR request and how the Sentinel SIP service populates them.

AVP Name Specification reference Included in CDR Included in CCR Comments

Service-Context-Id

IETF RFC 4006 and refined by 3GPP TS 32.299 v8.13.0 section 7.1.7

Yes

Yes

For MMTel the value is set to 8.32275@3gpp.org. For SCC the value is set to 8.32260@3gpp.org, even though SCC does not perform online charging. These values include the "Release", "service-context" and "domain" portions. For the Sentinel SS7 service the value is set to session@opencloud.com.

Session-Id

IETF RFC 4006

Yes

Yes

The Session-Id optional part is set to the Call-ID of the initial request for the Session

Origin-Host

IETF RFC 4006

No

Yes

Resource Adaptor entity configuration defines the value to be used for this AVP

Origin-Realm

IETF RFC 4006

No

Yes

Resource Adaptor entity configuration defines the value to be used for this AVP

Destination-Realm

IETF RFC 4006

No

Yes

This is set in Sentinel configuration, when selecting an OCS to use for the Session

Auth-Application-Id

IETF RFC 4006

No

Yes

Set to the value 4L

CC-Request-Type

IETF RFC 4006

No

Yes

CC-Request-Number

IETF RFC 4006

No

Yes

Destination-Host

IETF RFC 4006

No

No

Origin-State-Id

IETF RFC 4006

No

No

Event-Timestamp

IETF RFC 4006

No

Yes

Subscription-Id

IETF RFC 4006

Yes

Yes

Set to the Served User, either as a SIP URI or Tel URI. This is populated via the SIP Subscriber Determination Feature.

Termination-Cause

IETF RFC 3588

No

No

Requested-Action

IETF RFC 4006

No

Yes

AoC-Request-Type

IETF RFC 4006

No

No

Multiple-Services-Indicator

IETF RFC 4006

No

Yes

Set to 1 multiple services supported

Multiple-Services-Credit-Control

IETF RFC 4006

No

Yes

See the Multiple-Services-Credit-Control AVP table

CC-Correlation-Id

IETF RFC 4006

No

No

User-Equipment-Info

IETF RFC 4006

No

Yes

The IMEI is used rather than the IMEISV, and the User-Equipment-Type AVP is set to IMEISV.

Proxy-Info

IETF RFC 4006

No

No

Route-Record

IETF RFC 4006

No

No

Service-Information

3GPP TS 32.299

No

Yes

Refer to Populated AVPs in the Service-Information AVP

The BNF for the CCR message according to 32.299 v8.13.0 is

<CCR> ::= < Diameter Header: 272, REQ, PXY >

    < Session-Id >
    { Origin-Host }
    { Origin-Realm }
    { Destination-Realm }
    { Auth-Application-Id }
    { Service-Context-Id }
    { CC-Request-Type }
    { CC-Request-Number }
    [ Destination-Host ]
    [ User-Name ]
    [ CC-Sub-Session-Id ]      // not used in 3GPP
    [ Acct-Multi-Session-Id ]  // not used in 3GPP
    [ Origin-State-Id ]
    [ Event-Timestamp ]
   *[ Subscription-Id ]
    [ Service-Identifier ]     // not used in 3GPP
    [ Termination-Cause ]
    [ Requested-Service-Unit ] // not used in 3GPP
    [ Requested-Action ]
   *[ Used-Service-Unit ]      // not used in 3GPP
    [ AoC-Request-Type ]
    [ Multiple-Services-Indicator ]
   *[ Multiple-Services-Credit-Control ]
   *[ Service-Parameter-Info ] // not used in 3GPP
    [ CC-Correlation-Id ]
    [ User-Equipment-Info ]
   *[ Proxy-Info ]
   *[ Route-Record ]
    [ Service-Information ]
   *[ AVP ]
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Sentinel IP-SM-GW Version 2.5.1