What are the different functionalities of MTP3 layer?
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Answer Posted / gbassoul
The MTP3 Layer sits below the UP (User Parts) and is known
as the network management functions. It offers two types of
functions:
1- Message handling functions: Use the label (DPC, OPC and
SLS) for:
- Message distribution: This function is used to
distribute the message to the proper UP by means of
checking the destination of the message.
- Message discrimination: This function checks if the
message if the SP is indeed the right receptor of the
message
- Message routing: Used in order to determine the
signaling link on which the message should be routed to be
sent to the destination
2- Network Management functions:
Are used to
- Restore failed links
- Activate idle links
- Deactivate aligned links
- Maintaining service if signaling links or SPs are
lost and in case of congestion (Using Changeover,
Changeback, forced rerouting, controlled rerouting and
signaling traffic flow control)
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