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Below are instructions on how to configure the IMG to send a Reason Header to the incoming SIP entity displaying whether the call failed because resources were not available on the IMG or not available in the SS7 network.
Configure the initial objects above before proceeding to the procedure below.
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Right click on the Routing Configuration object and select New Channel Groups. The Channel Groups object is a container or parent object. No configuration is needed within this object. For more information, refer to the IMG 1010 - Channel Groups topic.
Right click on Channel Groups object and select New Channel Group. Set the Signaling Type field to either SIP or H.323. and enter a name for this channel group.
Select Enabled from the drop down menu in the CPN/CPC retrieval via INR/INF field. Refer to screen capture below. The capture displays the last few fields of the Channel Group object
Refer to IMG 1010 - Channel Group topic for more information on configuring a SIP Channel Group.
Right click on the SIP or H.323 channel group created and select New IP Network Element. Select the H.323 or SIP gateway created earlier from the drop down menu in the IP Network Element field.
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Right click on Channel Groups object again and select New Channel Group. Set the Signaling Type field to SS7 and enter a name for this channel group. For more information on configuring this object, refer to the IMG 1010 - Channel Group topic.
Under the SS7 Channel Group, the ISUP Group and CICs will need to be configured. Refer top the IMG 1010 - ISUP Group and IMG 1010 - Circuit Group topics for information on configuring these objects.
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