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A2 mtp parameters a2.1 mtp global configuration – Welltech SPCI2S Intel NetStructure SS7 Boards User Manual

Page 97

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SS7 Programmer’s Manual for SPCI2, SPCI4 and CPM8 Issue 2

Page 97

A2 MTP Parameters

A2.1 MTP Global Configuration

Syntax: MTP_CONFIG

Example: MTP_CONFIG 0 0 0x00040f00

The global configuration parameters for the Message Transfer Part (MTP).

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These parameters are reserved for backwards compatibility. For applications conforming to this
release of the documentation these parameters should always be set to zero.

A 32 bit value containing run-time options for the operation of the MTP as follows:

Bit 0 is set to 1 to disable the MTP3 message discrimination function (allowing the signalling point
to receive all messages irrespective of the destination point code contained in the message) or
zero to allow the discrimination function to function normally.

Bit 1 is set to 1 to disable sub-service field (SSF) discrimination. If this bit is set to zero, received
MSUs whose ssf value does not match the configured ssf value for that link set will be discarded.

Bit 2 is set to 1 to cause MTP3 to generate a UPU (User Part Unavailable) message to the
network on receipt of a message containing a Service Indicator value that has not been
configured. If set to zero the message will be discarded without sending UPU.

Bit 8 is set to 1 to select ANSI operation; otherwise it should be set to zero.

Bit 9 is set to 1 to select 24 bit point codes in the MTP routing label or zero to select 14 bit or 16
bit point codes. This bit should always be set to one when ANSI operation is required.

Bit 10 is set to 1 for ANSI operation; otherwise it should be set to zero.

Bit 11 is set to 1 for ANSI operation; otherwise it should be set to zero.

Bit 18 is used to control MTP functionality in the event of detection of RPO (Remote Processor
Outage). If set to 1, RPO is handled in accordance with the ITU-T 1992 (and later)
recommendations. If set to zero, on detection of RPO the signalling link is taken out of service and
restoration commenced. This bit should usually be set to 1.

Bit 20 is set to 1 to select 16 bit point codes in the MTP routing label for use in Japanese
networks or zero to allow the use of 24 bit or 14 bit point codes as selected using Bit 9 detailed
above.

Bit 21 should be set to 1 for use in Japanese networks; otherwise it should be set to zero.

All other bits are reserved for future use and should be set to zero.

NOTE: For correct ANSI operation bits 8, 9, 10, 11 and 18 must all be set to 1.

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