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As described in Feature F-5230, the H.223 and H.245 protocols are used between multimedia endpoints over a circuit switched network. These protocols are utilized after a successful call between two endpoints that indicates the call is for multimedia. Feature F-5698 gives the IMG the ability to detect an incoming SS7/ISDN multimedia call based on a specific octet contained in the SS7/ISDN setup message. If the call is considered an audio call, the message will be interworked as a normal ISDN/SS7 to SIP call. If however, the call is considered a multimedia call, a proprietary SIP Header can be added indicating it is a multimedia call and the added header will be interworked to the SIP side. The feature is enabled through a new header added to the SIP Headers object. Refer to the information below.
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Right Click on the Profiles object and select New SIP SGP. Once SIP SGP pane is created, change the SIP Profile ID field to something other than 0 by selecting a different ID from the drop down menu. This will allow user to edit the SIP SGP Profile. Refer to topic for more information on configuring this object.
Right Click on the SIP SGP Profile object and select New SIP Headers. In the SIP Headers object that appears select one of the choices in the drop down menu of the field X-Dialogic Multimedia Call. In this procedure, Multimedia call and Audio call was selected from drop down menu. See screen capture below. Refer to topic for more information.
Create SIP Signaling Stack
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Right click on IMG EMS and select New External Network Elements. No configuration is accomplished here. The External Network Element pane is a container object to multiple external entities in the network. Refer to IMG 1010 - 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 IMG 1010 - 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, and enter an IP address in the Gateway IP Address field.
Within the SIP Profile field of the External Gateway object, select the SIP SGP created above for the X-DLGCMultimedia: Data feature. See screen capture below. Refer to the IMG 1010 - External Gateway topic for more information.
Point SIP Channel group to gateway created
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