Software Modifications

Purpose

The following summarizes the changes to the software to support this feature with links to the detailed formats.

HMDT PPL Information

Configuration Bytes

The HMDT (Message Distribution) component of MTP3 uses configuration bytes to allow you to program which SS7 user parts will remain local to the CSP and which user parts will reside in a remote host. The default is to have all the user parts in the CSP.

Refer to MTP3 HMDT Configuration Bytes.

PPL Event Indications

There is a PPL Event Indication from the HMDT component to the host. The events reports TRANSFER IND and sends the corresponding data to the host.

Refer to MTP3 HMDT PPL Event Indications .

TSFC PPL Information

PPL Event Indications

There are three PPL event indication from the component TSFC (Traffic Signaling Flow Control) to the host. These events report the STATUS of a DPC or Pause and RESUME indications for an affected DPC.

Refer to MTP3 TSFC PPL Event Indications.

HMRT PPL Information

PPL Event Request

There is a PPL event request, TRANSFER, from the host to the HMRT (Message Routing) component.

The default sequence of these events is from the corresponding MTP3 component to a specific SS7 user part of the CSP. However, if you configure the HMDT configuration bytes, then the events flow to a remote user part resident in a remote host. You can achieve this process on a per user part basis. Also, there might be multiple remote hosts. In this case, the port number of the remote hot is stored in a specific HMDT configuration byte.

Refer to MTP3 HMRT PPL Event Requests (AIB: Stack/Link 0x08).

ICB

Below is the ICB for MTP to remote UP.

0x002B MTP3 User Part Parameter

Used in:
PPL Event Request message
PPL Event Indication message

ICB Type

0x03 (Extended Data)

ICB Subtype

0x002B MTP3 User Part Parameter

ICB Length

Length of parameters, in bytes

Data[0]

Parameter 1 Type ID

Data[1]

Length of parameter 1data in bytes

Data[2]

Parameter 1 Value

Variable size

:

 

Data[:]

Parameter n Type ID

Data[:]

Length of parameter n data in bytes

Data[:]

Parameter n Value

Variable size

PPL Parameters

ICB Type

0x03 (Extended Data)

ICB ID

0x0424

Data Length

2 bytes

0x000D

Data[0-3]

DPC - Destination Point Code

Data[4-7]

OPC - Originating Point Code

Data[8-9]

CIC - Circuit ID Code

Data[10]

SI - Service Indicator

Data[11]

MP - Message Priority

Data[12]

NI - Network Indicator

ICB Type

0x03 (Extended Data)

ICB ID

0x0425

Data Length

2 bytes

0x000C

Data[0-3]

DPC - Destination Point Code

Data[4-7]

OPC - Originating Point Code

Data[8]

SI - Service Indicator

Data[9]

MP - Message Priority

Data[10]

NI - Network Indicator

Data[11]

SLS - Signaling Link Set

 

ICB Type

0x03 (Extended Data)

ICB ID

0x0426

Data Length

2 bytes

Up to 0x010E

Data[0-1]

Length - Length of MSU Data

Data[4-n]

MSU Data -

Length up to 0x010C

 

 

 

 

 

 

 

 

 

ICB Type

0x03 (Extended Data)

ICB ID

0x0427

Data Length

2 bytes

0x0006

Data[0-3]

Affected DPC

Data[4]

Cause Value

Value 0 - congestion level 0

Value 1 - congestion level 1

Value 2 - congestion level 2

Value 3 - congestion level 3

Value 4 - User Part Unavailable

Value 5 - User Part Unequipped

Value 6 - User Part Inaccessible

Value 7 - Signaling Link Congestion level 0

Value 8 - Signaling Link Congestion level 1

Value 9: Signaling Link Congestion level 2

Value 10: Signaling Link Congestion level 3

Value 11: Signaling Link Congestion level 4

Data[5]

User Information Octet value