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Prepaid Roaming

Wallis Dudhnath - 4th April 2019  (08:51 GMT)

Below are more CAMEL specifications from 3GPP.

CAMEL / IN (Intelligent Network) is based on a Finite State Machine (FSM) model. The specifications define core Functional Entities: (gsm)SSF, (gsm)SCF, SDF, (gsm)SRF, IP, etc.. that are used in the Network.


3GPP TS 22.078: CAMEL Service Description; Stage 1

3GPP TS 23.078: CAMEL Phase 4; Stage 2

3GPP TS 29.078: CAMEL Phase 4; CAMEL Application Part (CAP) specification

3GPP: Contents of each CAMEL phase

3GPP TS 23.278: CAMEL Phase 4 - Stage 2; IM CN Interworking

3GPP TS 29.278: CAMEL Application Part (CAP) Specification for IP Multimedia Subsystems (IMS)

3GPP TR 21.978: Feasibility Technical Report - CAMEL Control of VoIP Services

VBR/ Wallis Dudhnath

Wallis Dudhnath - 3rd April 2019  (13:16 GMT)

Below is for CAMEL Phase 4:-

Reference: 3GPP TS 29.078 V15.0.0 (2018-06)

3rd Generation Partnership Project;
Technical Specification Group Core Network and Terminals;
Customised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4;
CAMEL Application Part (CAP) specification (Release 15)

You will need to go to 3GPP dot org (URL).

VBR/ Wallis Dudhnath

3GPP TS 22.078: "Customised Applications for Mobile network Enhanced Logic (CAMEL); Service description, Stage 1".

Prepaid - 8th June 2004  (08:25 GMT)


If u can give exact spec number it would be helpful.


3GPP - 7th June 2004  (07:06 GMT)

my web address>specifications>about>

Prepaid - 7th June 2004  (06:12 GMT)


Can anyone give the 3GPP spec that stipulates the guidlines for prepaid service and prepaid roaming service?

I am also looking for the spec for the CAMEL call models specifically O-BSCM and T-BSCM details.


Andrew - 3rd June 2004  (10:20 GMT)

Thanks Hari for the answer ..



Hari - 3rd June 2004  (09:56 GMT)

Yes, in case of terminating call for a roaming pre-paid, the T-BCSM will help in charging the MS-user.


Andrew Beachcroft - 2nd June 2004  (07:40 GMT)


Does anyone have an idea as to how prepaid roaming is handled?

What I mean is that a prepaid subscriber who is roaming is charged for incmoing calls.

As I understand it, for originating calls in an IN env the O-BCSM gets involved with the prepaid platform to authorize and monitor the call.

In the case of prepaid roaming does the T-BCSM play a part and interacts with prepaid system to charge the called parties account and drop the call when his/her credit reaches 0.

Would really appreciate your thoughts.


Andrew Beachcroft

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