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The IMG 2020 also supports inter-working the Charge Number information (information about the party to be billed) from SS7/ISUP signaling to the URI in a SIP INVITE message using the SS7 Parameter Filter object. For information on configuring the IMG 2020 to interwork the Charge number from SS7 ISUP to SIP URI, refer to the SS7 - Destination - ISUP Group - Parameter Filter topic. |
Call Flow Diagram
SIP to SS7
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Before configuring, the IMG 2020 must have an initial configuration created on it. Follow the Basic Configurations procedure before proceeding.
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Create a SIP Profile. Right click on the Dialogic object and select New Profiles. The Profiles object is a parent or container object and no configuration is needed here.
Right click on the Profiles object and select New SIP Profile. The first profile that gets created is a Default SIP Profile and cannot be modified. Disregard this profile.
Right click on the Profiles object just created again and select New SIP Profile. Either enter a Name into the name field that identifies this profile or accept the default entry. Refer to the SIP Profile - SGP topic for more information on configuring each of the individual fields.
Right click on the SIP Profile object just created and select New SIP Headers. Enable the SIP P-Charge feature by selecting Enabled from the drop down menu in the P-Charge-Info field. Refer to the topic for more information on configuring each of the individual fields in this object.
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Right click on the IMG 2020 physical node and select New Signaling. The Signaling object is a parent or container object and no configuration is needed here. Refer to the Signaling topic for more information on this object.
Right click on the Signaling object created and select New SIP. In the IP Address field, select from the drop down menu which IP address will be used for SIP signaling. Refer to IMG 1010 - SIP Signaling Object topic for more information.
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Right click on the Dialogic object and select New Routing Configuration. The Routing Configuration object is a parent or container object and no configuration is needed here. Refer to the IMG 1010 - Configuring Routing topic for more information.
Right click on Routing Configuration and select New Channel Groups. The Channel Groups object is a container object also and no configuration is needed. Refer to the Channel Groups topic for more information.
Right click on Channel Groups object and select New Channel Group. Either enter a name that identifies this channel group or accept the default entry. In this example the Channel Group was labeled SIP_PCharge_ChGrp.
Select SIP from the drop down menu of the Signaling Type field. Refer to the Channel Group topic for more information on configuring this object.
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Right click on the Dialogic object and select New External Network Elements. The External Network Elements object is a parent or container object and no configuration is needed here. Refer to External Network Elements topic for more information.
Right click on External Network Elements and select New External Gateways. The External Gateways object is a parent or container object also and no configuration is needed here. Refer to External Gateways for more information.
Right click on External Gateways and select New External Gateway. Enter a name that identifies the gateway being configured. In this example the gateway was labeled SIP_MWI_GW
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For more information refer to the External Gateway topic.
Insert SIP External Network Element into SIP Channel Group
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Interworking of P-Charge Info Header and Charge number is available for SIP to SIP, SIP to ISUP, and ISUP to SIP. SIP to SIP and SIP to ISUP are described above. ISUP to SIP interworking is configured in the SS7 - Destination - ISUP Group - Parameter Filter topic.
The P-Charge Info Header and Charge number are supported in ANSI only.
P-Charge INFO Header, by default, is set to enabled.
When P-Charge Info Header functionality and Diversion Header functionality are both present in the SIP INVITE, the P-Charge-Info Header shall have precedence. Below is a table displaying the different scenarios that would result from enabling/disabling the Diversion Header and P-Charge Info Header in a SIP to SIP call.
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