IMG 1010 - SIP Redirect IMG Initiated 302 - Example
The IMG already supports receiving 3xx Redirection messages. Feature 1442 will add the ability to initiate a SIP Redirect by sending a 302 message back to the originating gateway with information of other IMG's in the route list or route table that the originating gateway can send the invite message to. Procedure below will explain configuration of the SIP Redirect - IMG Initiated Redirect.
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Right click on the IMG EMS object and select New Routing Configuration. The Routing Configuration object is a parent or container object and no configuration is required here. Refer to the IMG 1010 - Routing Configuration Object topic for more information on this object.
Right click on Routing Configuration object and select New Channel Groups. Again, the Channel groups object is a container object and no configuration is required here. Refer to the IMG 1010 - Channel Groups topic for more information on this object.
Right click on Channel Groups and select New Channel Group. In the Name field, enter a name for this channel group. In this example and for demonstration purposes the channel group was labeled ChGrp1_SS7.
In the Signaling Type field, select SS7 from the drop down menu. Refer to the IMG 1010 - Channel Group topic for information on configuring the remaining fields.
Right click on the channel group ChGrp1_SS7 just created and select New ISUP Group. In the OPC-DPC field select the route that was configured when the TDM signaling channel group was created earlier in this procedure. In this example the OPC=1-1-1 and DPC=2-2-2 as displayed in the ISUP Group screen shot:
Right click on the ISUP Group created and select New Circuits. In the IMG Name field select IMG ID:0 which is the IMG with the stack configured on it. These CIC's will be communicating with IMG ID:0. Refer to the Circuits topic for more information on configuring the remaining fields in this object. Circuits object being configured for this example:
Repeat New ISUP Group and New Circuits steps above ISUP Group 2. ISUP Group 2 needs to be under the same Channel Group which was previously created.
Repeat New ISUP Group and New Circuits steps above ISUP Group 3. ISUP Group 3 needs to be under the same Channel Group which was previously created.
It is important that the ISUP Groups and CIC's all be part of the same channel group for the feature to function properly. Example Channel Group Tree:
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Right click on the Channel Groups object and select New Channel Group. In the Name field, enter a name to describe this channel group. In this example and for demonstration purposes, the channel group was labeled ChGrp1_SIP.
Select SIP from the drop down menu of the SignalingType field. For more information on configuring the remaining fields in this object, refer to the IMG 1010 - Channel Group topic.
Right click on the Channel Group just created and select New IP Network Element. Referring to the diagram above, select IMG ID:0 from the drop down list:
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When selecting the IP network element under the SIP channel group, the network element selected should be configured as one of the Physical Nodes. The feature will not operate correctly if under the SIP channel group, the IMG selected was initially configured as an External Gateway. For Route list explained below it can be configured either way. |
Create a second SIP Channel Group (ChGrp2_SIP) and IP Network Element:
Create a third SIP Channel Group (ChGrp3_SIP) and IP Network Element:
Create Route List
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Right click on Routing Configuration object created earlier and select New Route Lists. The Route Lists object is a container or parent object and no configuration is needed here. Refer to the IMG 1010 - Route Lists topic for more information on this object.
Right click on Route Lists object and select New Route List. In the Route list object that appears, enter a name that identifies the route list being created. Refer to the IMG 1010 - Route List topic for information on configuring the remaining fields in this object.
Right click on the Route List object and select New Channel Group. An object pane as displayed below will appear. Within this pane will be a selection for Channel Group Type. The drop down menu will allow you to select either Normal or Redirect. If this will be one of the channel groups that will be part of the Redirect, select Redirect. Refer to screen capture below:
In the Group Name field, select one of the SIP channel groups created earlier for the feature. Only the configured SIP Channel Groups will be in this list:
Repeat the previous 2 steps to create up to three channel groups under the Route List object that are configured with the Redirect option.
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