TCS Internal

September 29, 2014

Introduction to TMN Layer

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Objective

• This presentation covers the TMN Layer. The presentation aims on the various layers in TMN and the management functionalities of these layers. This presentation is the foundation for all beginners who will be working in Telecom domain.

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Index

Introduction to TMN

TMN Layers

TMN in field – An Example

TMN Management Functions

Summary

Discussion Points

References

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Introduction to TMN TMN: Telecommunications Management Network (TMN)

Provides a framework for interconnectivity and communication across heterogeneous telecommunication networks

TMN was developed by the International Telecommunications Union (ITU) as an infrastructure to support management and deployment of telecommunications services

TMN supplies a model of logical layers that define or suggest the management level for specific functionality.

The same type of functions can be implemented at many levels, from the highest level, which manages corporate or enterprise goals, to a lower level, which is defined by a network or network resource

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Introduction to TMN Contd.. Starting with the bottom level, these hierarchy layers include

NEs,

Element-management layer (EML)

Network-management layer (NML)

Service-management layer (SML)

Business-management layer (BML)

Once management is defined at the lower layers, additional management applications can be built on this foundation.

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TMN Layers

6Saturday, May 6, 2023

Business Management Layer

Service Management Layer

Network Management Layer

Element Management Layer

Network Element LayerTMN-manageable information

in an individual NE

Manages the “FCAPS” for NEs under its span. Deals with vendor specific functions

Has the entire network view. Interfaces with multi-vendor EML

entities

Manages those aspects which are directly visible to the end users and

service providers, e.g., QoS,add/remove users

Has broad scope and basically responsible for managing the whole enterprise. “Goal Setting” rather than

“Goal Achieving”

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TMN Layers Contd..

BML : High-level planning, budgeting, goal setting, executive decisions, business-level agreements (BLAs), etc.

SML : Uses information presented by NML to manage contracted service to existing and potential customers; this is the basic point of contact with customers for provisioning, accounts, quality of service, and fault management. The SML is also the key point for interaction with service providers and with other administrative domains.

NML: The NML has visibility of the entire network, based on the NE information presented by the EML. The NML manages individual NEs and all NEs as a group. The NML coordinates all network activities and supports the demands of the SML.

EML : Manages each network element; the EML has element managers, each of which are responsible for the TMN–manageable information in certain NEs. In general, an element manager is responsible for a subset of the NEs. An element manager manages network element data, logs, activity, etc.

NEL : The NEL presents the TMN–manageable information in an individual NE

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TMN in Field – An Example

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TMN Management Functions

Fault Management

Configuration

Management

Accounting Management

Performance Management

Security Management

Alarm handling System turn-up Track Service Usage

Data Collection Authentication

Trouble Detection & Correction

Network Provisioning

Billing for Services

Data Analysis Confidentiality

Event Notification and Log generation

Auto-Discovery Usage Reports and Analysis

Report Generation

Integrity

Network Recovery

Back-up and Restore

Resource Utilization

Monitoring QoS Access Control

Test and Acceptance

Database Handling

Logging User Activity

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SummarySummary

TMN Provides a framework for interconnectivity and communication across heterogeneous telecommunication networks

TMN divided into 5 Logical layers

NEs, Element-management layer (EML), Network-management layer (NML), Service-management layer (SML), Business-management layer (BML)

TMN provides 5 management functions

Fault management, Configuration management, Accounts management, Performance management, Security management

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Discussion Points

Discussion Points

1. TMN stands for?

2. Explain 5 layers of TMN?

3. What are management Layers?

4. What is the functionalities of OSS Layer?

5. What are 5 functions that TMN provides?

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References

http://en.wikipedia.org/wiki/Telecommunications_Management_Network