...
Verify the following entities are configured before proceeding:
Configure these initial objects before proceeding to the procedure below.
...
Right click on Profiles object created earlier and select New SIP SGP. A SIP object will appear. Change the ID from the first field to something other than ID:0. ID:0 is the default SIP profile and the SIP isub encoding field cannot be configured within this default object. See for more information on configuring this object.
Right click on the SIP SGP object just created and select New SIP Headers. A SIP Headers object will appear. Select 'Diversion' from Diversion Header Support field drop down menu. See below:
Create an External Network Element
...
Right click on Dialogic IMG EMS and select New External Network Elements. An External Network Elements pane will appear. No configuration is accomplished in this pane. This pane is a placeholder for multiple Network Elements to be created beneath it. See IMG 1010 - External Network Elements for more information.
Right Click on External Network Elements object created and select New External Gateways. An External Gateways pane will appear. again this pane is a placeholder from multiple External Gateways. No configuration is needed. See IMG 1010 - External Gateways for more information.
Right Click on the External Gateways object and select New External Gateway. A screen like below will appear:
Enter a name to identify the gateway that IMG will communicate with. This is the gateway that has SIP application set up to reject incoming INVITE with Diversion and Remote-Part-ID Headers.
Select SIP under the Gateway Signaling Protocol field- Enter IP Address of the Gateway the IMG will communicate with
Select the SIP SGP Profile that was created earlier. This profile has the SIP Headers object configured under it with Diversion Header Support set to 'Diversion'.
At this point the SIP to SS7 interworking of the Diversion and the RPID headers is configured on the IMG.
The next step will be to set up the routing so that the specific channel groups are configured to route to the External Network element configured above. See any of the multiple topics that describe the routing process. The following two links below are a good starting point.
IMG 1010 - Overview of Routing
IMG 1010 - Configuring Routing
Additional Information:
The feature is supported in the ETSI V2 variant only.
Interworking for Diversion Header to Redirection Number is enabled by selecting Diversion from drop down menu in the SIP Headers Support field located in the SIP Headers object. See IMG 1010 - SIP Headers
Interworking for Diversion Header to Redirection Number is disabled if either Disable, CC-Diversion, or History-Info is selected in the Diversion Header Support field.
Interworking for Remote Party ID Header to Generic Number by default is always enabled.