IMG 1010 - Overview of SS7 Configuration - 10.5.1

Overview:

In software 10.5.1 the IMG 1004 now supports terminating links. In order to implement this feature, the way in which SS7 links are configured and how they are implemented has changed. In previous software builds the Primary SS7 node, the Secondary SS7 node, and the remote nodes have been restricted to the IMG 1010. The IMG 1004 can now be configured to reside as a remote node having all the functionality as the IMG 1010. Each IMG 1004 can terminate up to a maximum of 4 signaling links and a license needs to be configured for both IMG 1010 and IMG 1004.

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Guidelines (10.5.1)

SS7 Standalone: (No SS7 Redundancy)

The SS7 signaling/server node can be configured as a Stand-Alone SS7 server or as the Primary/Secondary node of a redundant pair. See screen capture below which displays the SS7 Signaling object from ClientView.

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• The StandAlone SS7 node supports configuring Stacks and Links. The GCEMS will support up to 16 SS7 signaling stack objects. Each stack in the same Logical Group must have a different OPC (Originating Point Code)

• If loading software 10.5.2 or below, only the IMG 1010 can be configured as a Standalone/server node. The IMG 1004 can only be configured as a remote node which can terminate links but not have stacks configured on it.

• If configured as a Standalone, all stacks and links are configured under the StandAlone Node. All other Physical nodes in the Logical Group are considered remote nodes. The remote nodes can terminate links and have remote cic's configured on them but cannot have stacks configured on them.

• GCEMS supports configuring multiple Logical IMG Group objects in ClientView. Each Logical IMG Group can support up to 64 links.

SS7 Primary/Secondary: (SS7 Redundancy)

The SS7 signaling/server node can also be configured as a Primary/Secondary Redundant Pair. See screen capture below which displays the Primary node of a Primary/Secondary Pair. The Peer Logical Node ID selected will be configured as the Secondary/Standby.

• IF SS7 redundancy is configured the maximum number of SS7 stacks is still 16. (32 is using software 10.5.3 SP7)

• If using 10.5.2 or below software, only the IMG 1010 can be selected as a Peer Logical Node. The IMG 1004 cannot be configured as a Peer. It does not support configuring stacks and can only terminate links.

• If Primary Node were to go down, the Secondary or Peer node would become the active node. Switchover takes less than 10 ms.

• All messaging is shared between the Primary and Secondary nodes through RCOMM messaging.

• When faulted node is brought back into service it will become the standby node.

SS7 Remote Nodes:

Along with Primary/Secondary SS7 nodes, you can also configure Remote Nodes. Remote nodes support cic's and can terminate links.

• A Remote Node can be either an IMG 1010 or IMG 1004.

• Links are configured on either the Standalone or Primary SS7 node. Links are not configured on the remote nodes.

• Once links are configured on the SS7 Server node, the links created can be used on any IMG within the logical node group. This is accomplished by selecting the Physical IMG from a drop down menu located in the SS7 Link Pane in ClientView. See screen capture below.

• The ISUP Group is configured under an SS7 Channel group. The ISUP group will have a drop down menu with all stacks configured within the Logical IMG Group. Select from drop down menu which stack will be used for the remote cics. See screen capture below

• The CIC's configured in each channel group will need to be associated with a remote node Span/Channel. This is done in the Circuits Pane. From Drop down menu select which IMG the cics created in a specific channel group will be associated with. See screen capture below.

• Any combination of stacks can be created under the Logical IMG. Below are a few examples. Note that on each example below there are only four SS7 signaling stacks per logical IMG object but many different configurations can be created. A few examples are shown below.

• If a physical IMG object is created outside of a Logical IMG Group object then an SS7 signaling object cannot be created. ClientView does not support creating an SS7 stack under a Physical IMG object that is not associated with a Logical IMG Group object.

ClientView Panes used for SS7 configuration

The following diagram shows the ClientView Panes used for SS7 Configuration. Below is a diagram of a basic SS7 configuration. The purpose of the diagram is to show a couple things

• Once OPC's and DPC's are configured there are other objects in ClientView that use them

• CIC's configured in channel groups can use spans from multiple Physical IMG's as long as they are within a Logical IMG Group