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When the Calling Party Information Retrieval feature is enabled, if the IAM received from the SS7 side does not contain a Calling Party Number -or- the Calling Party Category is set to unknown, the IMG 2020 will send an INR (Information Request) back to the SS7 network requesting the Calling Party Number and/or the Calling Party Category. Once the SS7 side receives the INR, it will send back an INF (Information Message) with the requested parameters. The IMG 2020 then receives the parameters and uses this information along with the information in the original IAM to generate an INVITE message to the SIP or H.323 network which includes the additional parameters. Refer to the information below.
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Right click on IMG EMS and select New External Network Elements. No configuration is needed here. The External Network Element pane is a container object to multiple external entities in the network. Refer to External Network Elements topic for more information.
Right click on the External Network Elements object and select New External Gateways. Again, no configuration is accomplished here. Refer to External Gateways object for more information.
Right click on External Gateways object and select New External Gateway. Enter a name to identify this gateway, modify the Gateway Signaling Protocol field to display SIP. In this procedure the External Gateway was labeled CPR_GW.
Enter the IP address of the Gateway in the Gateway IP Address field. In the SIP Profile field, select from drop down menu a SIP Profile (SGP) created earlier. Refer to screen capture below.
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