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Configuring the SS7 Stack

Purpose

This section describes the procedure for bringing the SS7 stack into service. It assumes that all hardware configuration and cabling is complete, that all nodes are powered up, and that a host-to-node communication link has been established.

The CSP Developer’s Guide: Overview provides detailed setup procedures for downloading system software, for establishing socket connections and for configuring nodes.

Before you begin

To ensure that the SS7 stack is operational before beginning the configuration procedure, do the following:

1 Modify the application, as required, to support SS7 control of CICs in multiple nodes that have a single Originating Point Code (OPC) in the Server Node.

2 Move the SS7 signaling links to the Server Node. Change the configuration as required.

3 When you configure the SS7 stack, perform the steps below, and use these steps as a guideline to your initial configuration.

Configuration Procedure

Follow the procedure below to configure the SS7 stack.

1 Assign the logical node IDs to CSPs.
Send the Assign Logical Node message (0x0010), using the serial number of the CSP chassis number as the physical node ID.

2 Set the Enable ISUP Remote Control (0x01) bit on all nodes (server and remotes) of a multi-node system using the Assign Logical Node message (0x0010).

3 Download System Software license. Send Product License Download (0x0079) message.

4 Assign logical spans throughout the CSP.

Send the Assign Logical Span ID message (0x00A8) to assign spans to physical span offsets.

5 Download SS7 Software license. Send Product License Download (0x0079) message.

6 Configure the spans and channels corresponding to SS7 signaling links for clear channel.

Send either the E1 Span Configure message (0x00D8) or the T1 Span Configure message (0x00A9), depending on the protocol you use, to establish clear channel signaling.

7 Configure the SS7 Signaling Stacks with a stack ID, an Originating Point Code (OPC), and the variant to be used.

Send the SS7 Signaling Stack Configure message (0x005C) to assign the stack ID, OPC, and variant.

8 Configure the signaling link sets with a signaling link set ID to a given adjacent point code.

Send the SS7 Signaling Link Set Configure message (0x005D) to configure the link sets.

9 Configure the signaling links with the logical span/channel.

Send the SS7 Signaling Link Configure message (0x005E) to configure the links. The timeslot is provided off the local bus.

10 Configure the signaling routes and specify the relationship between a remote Destination Point Code (DPC) and the signaling links capable of reaching DPC.

Send the SS7 Signaling Route Configure message (0x005F) to configure the routes.

11 Send the SS7 CIC Configure message (0x006A) to the Server Node. Assign the voice circuits and associate a set of span/channels with a set of Circuit Identification Codes (CICs) for a particular stack ID.

Send the SS7 CIC Configure message (0x006A) to configure CICs.

Based on the logical span ID, the node that owns the logical span is informed that the stack ID controlling the voice circuits is the stack assigned to control the CICs in the message.

12 Send Service State Configure for each of the following:

• To bring: the spans into service.

• To bring the SS7 links into service.

• To bring the channels (CICs) into service.

See Signaling System Number Seven.
A number that addresses a node in a SS7 network.
See Integrated Services Digital Network User Part.
Range of channels provided by T1 or E1 transmission service. A physical span is a group of channels taking up a single physical wire. A logical span is a group of channels taking up less than a single logical wire, or carried over more than one physical wire.
A digital communications link - voice, data, and video at a 2.048 Mbps rate; 30B/2D or 31B/1D (ISDN); non-North American version of T1.
Digital communications link - voice, data, and video at a 1.544 Mbps rate (24 64 Kbps channels)
Link that connects to the same node
Destination Point Code
See Circuit Identification Codes.
CICs. Identify the voice circuits controlled by SS7 Signaling Links.
The condition of a component at a given instant. The current "context" of a PPL object, such as Idle, Seizing, Answered. In PPL files, a State is represented by a circle.