Contents

Introduction

Problem Description

Troubleshoot

Conclusion

Introduction

This document describes the charging scenarios related to Rating Group (RG) 0 on Gateway GPRS Supporting Node (GGSN).

Problem Description

Rating Group = '0' reflecting in GGSN Call Data Records(CDRs). Also the volume that reports in GGSN on Rating group = ‘0’ does not report to Online Charging Server (OCS).

CDR ELEMENTS FOLLOW

recordType EGSNPDPRECORD

servedIMSI 11122233334444

ggsnAddress 192.224.40.131

chargingID 464620230

sgsnAddress 192.224.40.136

accessPointNameNI xxxxx.com

pdpType IPV4

servedPDPAddress 192.72.21.107

dynamicAddressFlag TRUE

recordOpeningTime 160905195241+0530

duration 109

causeForRecClosing Normal Release

recordSequenceNumber 1

nodeID DELGW02

localSequenceNumber 384391885

apnSelectionMode MS or Network Provided and Subscription Verified

servedMSISDN 918009435175

chargingCharacteristics Prepaid

chargingCharSelMode SGSN Supplied

sgsnPLMNIdentifier 405, 54

imei-sv 3008280525536203

RATType GERAN

MSTimeZone +05:30

userLocationInformation 405-54-3105-8122

ratingGroup 0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Troubleshoot

As per the Postpaid redirection plan, they call with RG 431 ruledef which is not configured with any content –id. Due to which, all postpaid redirection users get zero rating group in Call Data Record (CDR).

As per the multiple case test, it is identified with certain User Equipments (UEs) only.

1. Prepaid numbers seem to have an issue. The ones who belong to single user profile redirection plan.

2. If the user tries to reach any page, it gets redirected with Customer page on basis of user agent. On the GGSN end, there is a charging action for this redirect task and it is not associated with any Rating Group. In this case, the user usage contains with "0" rating group as well.

This is the missing configuration:

charging-action 431_url_redirect

flow idle-timeout 300

no video cae-readdressing

flow idle-timeout flow-mapping 300

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>content-id 431 its missing which is trigger for the RG 0 in CDR. add this one

no service-identifier

retransmissions-counted

xheader-insert xheader-format msisdn_rat

billing-action egcdr

no cca charging

content-filtering processing server-group

no qos-class-identifier

no ip tos

no ip tos

no qos-renegotiate traffic-class

flow action redirect-url http://one.airtel.in/net

no flow limit-for-flow-type

no flow limit-for-bandwidth direction downlink

no flow limit-for-bandwidth direction uplink

charge-volume ip bytes

no nexthop-forwarding-address

no ip vlan

tft-notify-ue

no service-detection session-update

rulebase REDIRECT_PLAN

description ""

#exit

timestamp rounding edr round-off

no ran bandwidth optimize

dynamic-rule order always-first

ip reassembly-timeout 5000

no active-charging rf rating-group-override

no active-charging rf service-id-override

icmp req-threshold 20

no ip reset-tos

no tethering-detection

tcp packets-out-of-order timeout 30000

retransmissions-counted

tcp 2msl-timeout 2

tcp packets-out-of-order transmit immediately

no tcp mss

no tcp proxy-mode

http header-parse-limit 12000

rtsp initial-bytes-limit 6000

no video optimization-preprocessing

wtp packets-out-of-order transmit immediately

wtp out-of-order-timeout 5000

tcp check-window-size

post-processing policy not-for-dynamic-discard

no xheader-encryption certificate-name

no xheader-encryption re-encryption

timestamp rounding egcdr round-off

flow end-condition timeout normal-end-signaling session-end charging-edr edr-flow-format

billing-records egcdr

action priority 3 ruledef 426_1_redirect charging-action 426_charged_with_Gy monitoring-key 2

action priority 4 ruledef 403_1_redirect charging-action 410_charged_with_Gy monitoring-key 2

action priority 5 ruledef 410_1_redirect charging-action 431_charged_with_Gy monitoring-key 2

action priority 7 ruledef 431_1 charging-action 431_charged_with_Gy

action priority 15 ruledef httpua charging-action 431_url_redirect

CDR elements follow:

recordType EGSNPDPRECORD

servedIMSI 405540128802801

ggsnAddress 192.224.40.131

chargingID 157136633

sgsnAddress 192.224.40.136

accessPointNameNI xxxxxgprs.com

pdpType IPV4

servedPDPAddress 10.66.181.167

dynamicAddressFlag TRUE

recordOpeningTime 160906192638+0530

duration 130

causeForRecClosing Management Intervention

recordSequenceNumber 1

nodeID DELGW02

localSequenceNumber 524874817

apnSelectionMode MS or Network Provided and Subscription Verified

servedMSISDN 918933043178

chargingCharacteristics Prepaid

chargingCharSelMode SGSN Supplied

sgsnPLMNIdentifier 405, 54

imei-sv 3562370491918918

RATType GERAN

MSTimeZone +05:30

userLocationInformation 422-54-15-25111

ratingGroup 0

localSequenceNumber 87586425

timeOfFirstUsage 160906192838+0530

timeOfLastUsage 160906192838+0530

timeUsage 0

serviceConditionChange PDP context release

qoSInformationNeg 01 0b 61 1f 73 96 68 68 74 05 ff ff 00

sgsn-Address 192.224.20.136

sGSNPLMNIdentifier 405, 54

datavolumeFBCUplink 327

datavolumeFBCDownlink 112

timeOfReport 160906192848+0530

rATType GERAN

CDR ELEMENTS FOLLOW

recordType EGSNPDPRECORD

servedIMSI 405540128802801

ggsnAddress 192.234.40.131

chargingID 157136633

sgsnAddress 223.224.40.136

accessPointNameNI xxxxgprs.com

pdpType IPV4

servedPDPAddress 192.66.181.167

dynamicAddressFlag TRUE

recordOpeningTime 160906192848+0530

duration 0

causeForRecClosing Management Intervention

recordSequenceNumber 2

nodeID DELGW02

localSequenceNumber 524874818

apnSelectionMode MS or Network Provided and Subscription Verified

servedMSISDN 918933043178

chargingCharacteristics Prepaid

chargingCharSelMode SGSN Supplied

sgsnPLMNIdentifier 405, 54

imei-sv 3562370491918918

RATType GERAN

MSTimeZone +05:30

userLocationInformation 405-54-15-25111

ratingGroup 800

resultCode 2001

localSequenceNumber 87586426

timeOfFirstUsage 160906192711+0530

timeOfLastUsage 160906192724+0530

timeUsage 13

serviceConditionChange PDP context release

qoSInformationNeg 01 0b 61 1f 73 96 68 68 74 05 ff ff 00

sgsn-Address 192.124.40.136

sGSNPLMNIdentifier 405, 54

datavolumeFBCUplink 124

datavolumeFBCDownlink 0

timeOfReport 160906192848+0530

rATType GERAN

HEXDUMP-START

00 00 00 01 ....

[V] [M] Charging-Rule-Install

Code: 0x000003e9 (1001) Charging-Rule-Install

Flags: 0xc0 (192) [V] [M]

Length: 0x00003c (60)

Vendor-Id: 0x000028af (10415) 3GPP

[V] [M] Charging-Rule-Base-Name

Code: 0x000003ec (1004) Charging-Rule-Base-Name

Flags: 0xc0 (192) [V] [M]

Length: 0x000020 (32)

Vendor-Id: 0x000028af (10415) 3GPP

Data: REDIRECT_PLAN

Conclusion

If in a charging-action billing-action egcdr is configured but content-id is not, data traffic is charged against this charging-action and is reported in CDRs with Rating Group "0".