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The IMG sends and receives certain data pertaining to prepaid applications, allowing the IMG to be used in a prepaid application environment.

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For information on configuring RADIUS on 2020 IMG refer to IMG 1010 - Configure RADIUS and IMG 1010 - RADIUS Client topics.

Info

Radius Prepaid Support Mode will be disabled if Radius Debug Mode is enabled. The two modes cannot be enabled at the same time.

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The IMG will send the VSAs and RADIUS attributes to the Authentication Server. For a list of supported VSAs refer to IMG 1010 - RADIUS - Dialogic VSA's topic. Below are a few supported VSA's.

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VSA Number and Format

VSA Description and Information

VSA #45

Dialogic-trunk-grp-out

The IMG Gateway supports routing calls to a channel group indicated by a RADIUS server. If Pre-paid Support is enabled and the IMG receives VSA 45: Dialogic-trunk-grp-out from the RADIUS server, the IMG will skip the mid-stream routing process and route the call to the channel group indicated by the RADIUS server.

VSA #152

Dialogic-Called-Number-NOA

When the IMG Gateway receives an incoming call with a Nature of Address field embedded in the Called Party Number, the IMG Gateway will then send an Access Request message with the VSA "Dialogic-Called-Number-NOA" to a RADIUS server configured to communicate with the IMG Gateway. This happens only when pre-paid support is enabled in the IMG 1010 - RADIUS Client object. Refer to the additional information below.   

Additional Information

  • The VSA number is 152

  • The VSA data is one byte of binary data that represents the NOA field of the Called Party Number.

  • The VSA data value range is from 0x00 to 0x7f (0000000 - 1111111)

  • The IMG Gateway adds the Called Party Number NOA VSA to the Access Request message only when pre-paid support is enabled

  • The value of the Called Party Number NOA VSA is not affected by any translation (translation table). That is, the original pre-translated value from the incoming call shall be sent to Radius, not the translated one.

  • This feature is applicable for all call types, including SS7 and ISDN calls, when the Called Party Number NOA is present in the incoming call.

  • For an incoming SIP call, if the NOA of the Called Party Number is not available, the default hardcoded value is set to 3 for the NOA.

  • The Dialogic Radius dictionary will be updated to include the new Called Party Number NOA VSA.

VSA #153

Dialogic-Calling-Party-NOA

When the IMG Gateway receives an incoming call with a Nature of Address field embedded in the Calling Party Number, the IMG Gateway will then send an Access Request message with the VSA "Dialogic-Calling-Number-NOA" to a RADIUS server configured to communicate with the IMG Gateway. This happens only when pre-paid support is enabled in the IMG 1010 - RADIUS Client object. Refer to the additional information below.   

Additional Information

  • The VSA number is 153

  • The VSA data is one byte of binary data that represents the NOA field of the Calling Party Number.

  • The VSA data value range is from 0x00 to 0x7f (0000000 - 1111111)

  • The IMG Gateway adds the Calling Party Number NOA VSA to the Access Request message only when pre-paid support is enabled

  • The value of the Calling Party Number NOA VSA is not affected by any translation (translation table). That is, the original pre-translated value from the incoming call shall be sent to Radius, not the translated one.

  • This feature is applicable for all call types, including SS7 and ISDN calls, when the Calling Party Number NOA is present in the incoming call.

  • For an incoming SIP call, if the NOA of the Calling Party Number is not available, the default hardcoded value is set to 3 for the NOA.

  • The Dialogic Radius dictionary will be updated to include the new Calling Party Number NOA VSA.

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To view call trace, refer to the IMG 1010 - RADIUS - Call Trace - Pre paid topic.

Routing Using Pre-paid Application

The IMG supports routing calls to a channel group which is indicated by a RADIUS server. If Pre-paid Support is enabled and the IMG receives VSA 45: Dialogic-trunk-grp-out from the RADIUS server, the IMG will skip the mid-stream routing process and route the call to the channel group indicated by the RADIUS server. To view call trace, refer to the IMG 1010 - RADIUS - Call Trace - Pre-paid Routing topic.

Related Topics

IMG 1010 - RADIUS Client

IMG 1010 - RADIUS - Dialogic VSA's