Configuring TCAP Overload Logic

Purpose

This section describes how to change the threshold for TCAP overload logic configuration on your SS7 card in the CSP whether configured for a variant of an ANSI or ITU protocol.

Before you begin

You must have an SS7 card configured with TCAP and TCAP must have a local subsystem. You can change either the threshold for approaching busy or real busy. You must ensure that the real busy threshold is set at higher rate than the approaching busy threshold.

Configuring TCAP Overload Logic

Use the steps below to change the threshold for TCAP Overload Logic.

1 Configure the threshold using the System Configuration (0x00AF) message.

2 Depending on the threshold being changed, set the Configuration Type to either:

• 0x0B

• 0x0C

3 Use the slot AIB for the slot number of the SS7 card.

4 Set the data. For example, the data relevant to the real busy threshold for CPU Level 1 would be:

02 CPU level 1

01 Enable

02 Change thresholds

62 CPU usage percentage expressed in hexadecimal.

Important! Excel recommends you not change the thresholds for Memory and MCB.

5 See the next example.

Example System Configuration message

The following shows the System Configuration (0x00AF) message being used to change the CPU (Level 1) real busy threshold for slot 0 to 98 per cent:

00 0f 00 af 00 00 ff 0c 00 01 01 01 00 02 01 02 62