This field contains the Network Identifier part of the Access Point Name (APN). It is provided by WMN during IPSEC or SSL establishment procedure.

Format

IA5 string

Length

1-63 bytes

An index indicating how the APN is selected.

The following APN selection mode indexes are possible:

Format

Enumerated

Length

1 byte

This field contains a reason for the release of the CDR.

Supported values:

Format

Integer

Length

1 byte

This field lists the charging characteristics applied to the PDP context.

The PDG can accept charging characteristics from the AAA Server or use its own configured value. PDG configured charging characteristics are specified as part of the PDG Service and are applied for WLAN-CDRs to subscriber PDP contexts through APN templates.

Format

Octet string

Length

2 bytes

The charging characteristic type that the PDG applied to the CDR.

The following values for this field are defined in 3GPP TS 32.298:

Format

Enumerated (Integer)

Length

1 byte

This field contains a charging identifier, which can be used together with the PDG address to identify all records produced in the PDG involved in a single PDP context. The Charging ID is generated by the PDG at PDP context activation.

The possible values for the charging ID, which are defined in TS 29.060 are 1 - 4,294,967,295 and those values are encapsulated in the following scheme in the CDR field:

1 - 127 850101-85017F

128 - 32,767 85020080-85027FFF

32,768 - 8,388,607 8503008000-85037FFFFF

8,388,608 - 2,147,483,647 850400800000-85047FFFFFF

2,147,483,648 - 4,294,967,295 85050080000000 - 850500FFFFFFFF

Format

Integer

Length

1–5 bytes

This field is included in the CDR when the PDP context is released and when the option gtpp attribute diagnostics is configured. Only the choice of "gsm0408Value" is used.

Format

Choice

Length

3 bytes

This field indicates that the PDP address has been dynamically allocated for that particular PDP context. This field is missing if address is static i.e. part of PDP context subscription.

Format

Boolean

Length

1 byte

This field contains the relevant duration in seconds for PDP contexts with the range of 0 through 4294967295 (2^32-1).

It is the duration from Record Opening Time to record closure. For partial records, this is the duration of the individual partial record and not the cumulative duration.

Format

Integer

Length

1–5 bytes

For each Node ID, this number with the range of 1 through 4294967295 is allocated sequentially for each CDR. This along with a Node ID uniquely identifies a CDR.

For WLAN-CDRs, this field is only included when the option gtpp attribute local-record-sequence number is configured.

Format

Integer

Length

1-5 bytes

This list includes one or more traffic data volume containers. The number of containers is configurable with a maximum of 4 for WLAN-CDRs.

Format

Sequence

Length

Variable

This field contains an identifier string for the node that generated the CDR.

On the PDG, this NodeID field is a printable string of the ndddSTRING format:

n: The first digit is the sessmgr restart counter having a value between 0 and 7.

ddd: The number of the sessmgr instance generating the CDR.

STRING: This is a configured node-id-suffix having any string from 1 to16 characters, defined using the gtpp attribute node-id command.

If this node-id-suffix is not configured, the PDG uses the GTPP context name as the node-id-suffix (truncated to 16 characters).

For WLAN-CDRs, this field is only included when the option gtpp attribute local-record-sequence number is configured.

Format

IA5string

Length

5-20 bytes

This field provides the current serving PDG IP address for the Control Plane. The standard 32.298 offers a choice for the encoding of the address to be either in binary or text format.

The PDG encodes the address in binary format and includes the octet string.

Format

Choice

Length

6 bytes

This field defines the PDP type, e.g. IP or PPP.

Supported values:

Format

Octet string

Length

2 bytes

This field indicates the Radio Access Technology (RAT) type currently used by the Mobile Station. This field is present in the CDR if provided by WLAN.

RAT Type values:

Format

Integer

Length

1 byte

This field contains the time stamp when PDP context is activated in PDG or when a subsequent record is opened after a partial record.

The timestamp is determined based on the internal timer which has an accuracy of 10ms. Depending on the configured mechanism (ceiling, floor, or round-off) this field is translated to only show full seconds.

The contents of this field are a compact form of the UTC Time format containing local time plus an offset to universal time. Binary coded decimal encoding is employed for the digits to reduce the storage and transmission overhead

Format

BCD encoded octet string

Length

9 bytes

A running sequence number with the range of 1 through 4294967295 used to link partial records generated by the PDG for a specific PDP context (characterized with the same Charging ID and PDG address pair). This field is not present if the first record is also the final record.

Format

Integer

Length

1–5 bytes

This field identifies the type of the record:

WLAN-CDR(WLANPDGRecord) 95 (0x5F)

WLAN-CDR(WLANTTGRecord) 96 (0x60)

The 3GPP 32.298 does not define any values for record type. This value is selected as this is not yet reserved by any CDRs.

Format

Integer

Length

1 byte

This field contains the International Mobile Subscriber Identity (IMSI) of the served party.

The IMSI is formatted in accordance with 3GPP TS 23.003.

Example for Coding: (Set by PDG)

3GPP TS 23.003 (CCITT Rec. E 212) 
ServedIMSI ::= OCTET STRING (SIZE(1..8)) 
-- subscriber identification IMSI 
-- octet 1..8: <= 15 digits TBCD-String (twisted) 
-- substructure (without spares or fillers): 
-- 3 digits - mobile country code (MCC) 
-- 2 digits - mobile network code (MNC) 
-- <= 10 digits - mobile subscriber identification number (MSIN) 
-- first and intermediate octet = 2 digits 
-- last octet = 2 digits or 1 digit + 1 fill digit H'F 
-- 
-- example: 
-- IMSI: '262025600010020' 
-- filled: '262025600010020F' 
-- encoded: H'62 02 52 06 00 01 20 F0 

Format

BCD encoded octet string

Length

3–8 bytes

The field tracks the Mobile Station (MS) ISDN number (MSISDN) of the subscriber, which is sent by AAA server.

The MSISDN is TBCD encoded as shown in the example below:

3GPP TS 23.003 (CCITT Rec. E 213) 
ServedMSISDN ::= OCTET STRING (SIZE(1..9)) 
subscriber identification MSISDN 
octet 1 : bit 8 (msb): extension bit 
= 1 : no extension 
other : not relevant 
 
bit 7..5 : type of number 
= 000 : unknown 
= 001 : international number 
= 010 : national significant number 
= 011 : network specific number 
= 100 : subscriber number 
= 101 : reserved 
= 110 : abbreviated number 
= 111 : reserved for extension 
 
bit 4..1 : numbering plan indicator 
= 0001: ISDN/Telephony Numbering Plan (Rec CCITT E.164) 
other : not relevant 
 
octet 2..9: <= 16 digits TBCD-String (twisted) 
substructure (without spares or fillers): 
1..3 digits - country code (CC) 
(only international number) 
3 digits - national destination code (NDC) 
<= 10 digits - subscriber number (SN) 
first and intermediate octet = 2 digits 
last octet = 2 digits or 1 digit + 1 fill digit H'F 
 
example: 
MSISDN: '<internat #><E.164>491720400305' 
encoded: H'91 94 71 02 04 30 50 

Format

BCD encoded octet string

Length

1–9 bytes

This field contains the PDP address of the served IMSI, for which the standard 3GPP TS 32.298 allows a choice of either IPAddress or ETSIAddress.

Format

Choice

Length

8 bytes