> S-CDR Field Descriptions
> This chapter lists and describes the fields supported by the system for use in SGSN Charging Data Records (S-CDRs).
> The following information is provided for each field:

> • | Description: The field’s description.

> • | Format: The field’s data format.

> • | Length: The field’s size, in bytes.

> Based on the following standards:

> • | 3GPP TS 32.298 V6.5.0 (2006-09): 3rd Generation Partnership Project; Technical Specification Group Service and System Aspects; Telecommunication management; Charging management; Charging Data Record (CDR) parameter description (Release 6)

> • | 3GPP TS 32.251 V6.10.0 (2007-06): 3rd Generation Partnership Project; Group Services and System Aspects; Telecommunication management; Charging management; Packet Switched (PS) domain charging (Release 6)

> Also, refer the SGSN and Mobility Management Charging Detail Record Field Reference Tables chapter for information on CDR fields supported in S-CDRs.
> CDR Fields
> Access Point Name Network Identifier
> The network identifier portion of the Access Point Name (APN). The APN typically corresponds to a registered Internet domain name and represents the external packet data network (PDN).
> Format
> IA5 String
> Length
> 1–65 Bytes
> Access Point Operator Identifier
> The Operator Identifier part of the APN.
> Format
> IA5 String
> Length
> 1–37 Bytes
> APN Selection Mode
> An index indicating how the APN was selected.
> The following APN selection mode indexes are possible:

> • | 0: MS or network provided APN, subscribed verified

> • | 1: MS provided APN, subscription not verified

> • | 2: Network provided APN, subscription not verified

> Format
> Unsigned Integer
> Length
> 1 Byte
> CAMEL Information
> Set of CAMEL information related to PDP context. This field is present if CAMEL Charging Information is received by the HLR in ISD message.
> Format
> Octet String
> Length
> N/A
> Cause for Record Closing
> The reason the record is released from the SGSN.
> Some of the possible reasons are:

> • | normalRelease (0): The PDP context was terminated normally through a PDP context release (end of context or SGSN change) or a GPRS detach.

> • | abnormalRelease (4): The PDP context was abnormally terminated.

> • | volumeLimit (16): The CDR is released due to exceeding volume limit.

> • | timeLimit (17): The CDR is released due to exceeding time limit.

> • | maxChangeCond (19): The CDR is released due to exceeding the changed condition limit.

> • | managementIntervention (20): The record was closed due to an O&M request.

> • | intraSGSNIntersystemChange (21): The CDR is released when MS moves from 3G<->2G and vice versa within the same SGSN.

> • | Partial Record Generation: A partial CDR was generated for reasons such as the reaching of data volume or time (duration) limits, or reaching the maximum number of charging condition changes, or intraSGSNIntersystemChange change.

> Format
> Unsigned Integer
> Length
> 1 Byte
> Cell Identifier
> Cell identity for GSM or Service Area Code (SAC) for UMTS at “Record Opening Time”.
> Format
> Octet String
> Length
> 2 Bytes
> Charging Characteristics
> Lists the charging characteristics applied to the PDP context.
> The SGSN can accept charging characteristics from the HLR or use its own. SGSN-configured charging characteristics are specified as part of the operator policy and are applied to subscriber PDP contexts through SGSN-Operator-Policy templates.
> Format
> Hex Value Octet String
> Length
> 2 Bytes
> Charging Characteristics Selection Mode
> The charging characteristic (CC) type that the SGSN applied to the CDR. The following values for this field are supplied:

> • | Home Default: SGSN configured charging characteristics for home subscribers are used. Home subscribers are those that belong to the same PLMN as the one on which the GGSN is located.

> • | Visiting Default: SGSN configured charging characteristics for visiting subscribers are used. Visiting subscribers are those that belong to a different PLMN than the one on which the GGSN is located.

> • | Roaming Default: SGSN configured charging characteristics for roaming subscribers are used. Roaming subscribers are those that are serviced by an SGSN belonging to a different PLMN than the one on which the GGSN is located.

> • | subscriptionSpecific: This CC will be applied to S-CDR only if aPNSpecific CC is absent.

> • | aPNSpecific: For S-CDR priority will be given to aPNSpecific Charging Characteristics Selection mode. The aPNSpecific mode is from HLR (ISD Message).

> Format
> Enumerated Integer
> Length
> 1 Byte
> Charging ID
> The PDP context identifier used to identify the PDP context in different records created by GSNs.
> Format
> Unsigned Integer
> Length
> 1–4 Bytes
> Diagnostics
> This field is included in the CDR when the PDP context is released. This field is supported in G-CDRs but not for eG-CDRs.
> It will contain one of the following values:

> • | 36: If the SGSN sends Delete PDP Context request

> • | 38: If the SGSN sends Delete PDP Context request due to GTP-C/U echo timeout with SGSN

> • | 26: If the SGSN sends Delete PDP Context request for any other reason

> Format
> Unsigned Integer
> Length
> 1 Byte
> Duration
> The time period, in seconds, that the record existed in the SGSN. It is the duration from “Record Opening Time” to record closure. For partial records, only the duration of the individual partial record is provided.
> Format
> Unsigned Integer
> Length
> 1–5 Bytes
> Dynamic Address Flag
> The presence of this field indicates that the Served PDP Address was dynamically assigned during context activation.
> Format
> Boolean
> Length
> 1 Byte
> GGSN Address
> The binary-represented IPv4 address of the GGSN used.
> Format
> Hex Value Octet String
> Length
> 4 Bytes
> List of Traffic Data Volumes
> A list of the changes that occurred in the charging conditions for this PDP context.
> The list will include one or more containers each including the following fields:

> • | QoS negotiated: Quality of service (QoS) has been negotiated. The initial and final corresponding data values are listed. This is only added for the first container and the container after a QoS change.

> • | Uplink volume: The number of octets (uncompressed) received from the MS. The initial and final corresponding data values are listed.

> • | Downlink volume: The number of octets (uncompressed) transmitted to the MS.The initial and final corresponding data values are listed.

> • | Change Condition: Identifies the reason that the container was closed such as tariff time change, QoS change, or closing of the CDR.

> • | Change Time: A timestamp identifying the time at which the volume container or the CDR closed.

> For GPRS, data volumes are in octets above the GTP layer and are separated for uplink and downlink traffic. In UMTS, data volumes are in octets above the GTP-U layer and are separated for uplink and downlink traffic.
> Format

> • | QoS negotiated: Octet String

> • | Uplink volume: Integer

> • | Downlink volume: Integer

> • | Change Condition: Integer

> • | Change Time: BCD Encoded Octet String

> Length

> • | QoS negotiated: 12 Bytes

> • | Uplink volume: 4 Bytes

> • | Downlink volume: 4 Bytes

> • | Change Condition: 1 Byte

> • | Change Time: 9 Bytes

> Local Record Sequence Number
> Consecutive record number created by the node. For a Node ID, this number is allocated sequentially for each CDR. This along with a Node ID uniquely identifies a CDR.
> Format
> Unsigned Integer
> Length
> 1–4 Bytes
> Location Area Code (LAC)
> Indicates the LAC at “Record Opening Time”.
> Format
> Octet String
> Length
> 2 Bytes
> MS Network Capability
> The mobile station network capability.
> Format
> Octet String
> Length
> 1–8 Bytes
> Network Initiated PDP Context
> The presence of this field indicates that the PDP context was initiated by the network.
> Format
> Boolean
> Length
> 1 Byte
> Node ID
> The identifier string for the SGSN that had generated the CDR. Node ID along with local record sequence number uniquely identifies a CDR.
> Format
> Octet String
> Length
> 1–20 Bytes
> PDP Type
> The PDP context type. The PDP types supported by the SGSN are IP or PPP (including IHOSS:OSP).
> Format
> Hex Value Octet String
> Length
> 2 Bytes
> Radio Access Technology (RAT) Type
> The SGSN may include the RAT Type IE along with User Location Information IE, and MS Time Zone IE if they are available. The RAT Type IE is not included for the MS-initiated PDP Context Modification procedure.
> Format
> Integer (1-255).
> Length
> 1 Byte
> Record Extensions
> A set of network operator or manufacturer specific extensions that may be added to the record if provided. It is used for reporting flows and volumes consumed, and also for passing key information about the session into the downstream charging systems.
> Important: This field is customer specific.
> Record Opening Time
> The timestamp at which the PDP context was activated on the SGSN.
> Format
> BCD Encoded Octet String
> Length
> 9 Bytes
> Record Sequence Number
> A running sequence number used to link partial records generated by the SGSN for a specific PDP context (characterized with the same Charging ID and SGSN address pair). This field is only present in case of partial records.
> Format
> Unsigned Integer
> Length
> 1–5 Bytes
> Record Type
> Indicates the SGSN PDP context record type.
> Format
> Integer
> Length
> 1–4 Bytes
> RNC Unsent Downlink Volume
> The downlink data volume that the RNC has not sent to MS. This field is present when the RNC has provided unsent downlink volume count at RAB release.
> Format
> Unsigned Integer
> Length
> 1–5 Bytes
> Routing Area Code (RAC)
> Indicates the RAC at “Record Opening Time”.
> Format
> Octet String
> Length
> 1 Byte
> Served IMEI
> The International Mobile Equipment Identity (IMEI) of the MS, if available.
> Format
> BCD Encoded Octet String
> Length
> 8 Bytes
> Served IMSI
> The International Mobile Subscriber Identity (IMS) of the MS. The IMSI is formatted in accordance with 3GPP TS 23.003. This will be present if the Anonymous Access Indicator is FALSE or not supplied.
> Format
> BCD Encoded Octet String
> Length
> 3–8 Bytes
> Served PDP Address
> The binary-represented IPv4 address associated with the PDP context for the CDR. This address could either be static or dynamically assigned.
> Format
> Hex Value Octet String
> Length
> 4 Bytes per address
> Served MSISDN
> The primary Mobile Station (MS) ISDN number (MSISDN) of the subscriber.
> Format
> BCD Encoded Octet String
> Length
> 1–9 Bytes
> SGSN Address
> The SGSN IPv4 addresses (binary-represented) used over the duration of the CDR. The address(es) can be either user or control-plane addresses.
> Format
> Hex Value Octet String
> Length
> 4 Bytes per address
> SGSN Change
> Present if this is first record after SGSN change.
> Format
> Boolean
> Length
> 1 Byte

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