Editing Telecommunications Management Network

{{short description|Protocol model}}
{{More citations needed|date=July 2013}}
The '''Telecommunications Management Network''' is a protocol model defined by [[ITU-T]] for managing [[Open Systems Interconnection|open system]]s in a communications network. It is part of the ITU-T Recommendation series M.3000 and is based on the [[Open Systems Interconnection|OSI]] management specifications in ITU-T Recommendation series [[Common management interface protocol|X.700]].

TMN provides a framework for achieving interconnectivity and communication across heterogeneous operations system and telecommunication networks. To achieve this, TMN defines a set of ''interface points'' for elements which perform the actual communications processing (such as a call processing switch) to be accessed by elements, such as management workstations, to monitor and control them. The standard interface allows elements from different manufacturers to be incorporated into a network under a single management control.

For communication between Operations Systems and NEs (Network Elements), it uses the [[Common management information protocol]] (CMIP) or Mediation devices when it uses Q3 interface.

The TMN layered organization is used as fundamental basis for the management software of [[Integrated Services Digital Network|ISDN]], [[Broadband Integrated Services Digital Network|B-ISDN]], [[Asynchronous Transfer Mode|ATM]], [[Synchronous optical networking|SDH/SONET]] and [[Global System for Mobile Communications|GSM]] networks.  It is not as commonly used for purely packet-switched data networks.

Modern telecom networks offer automated management functions and are run by [[operations support system]] (OSS) software. These manage modern telecom networks and provide the data that is needed in the day-to-day running of a telecom network. OSS software is also responsible for issuing commands to the network infrastructure to activate new service offerings, commence services for new customers, and detect and correct network faults.

== Architecture ==
According to ITU-T M.3010 TMN has 3 architectures:
; [[Physical architecture]] : 
; [[Security architecture]] : 
; [[Logical layered architecture]] :

== Logical layers ==

The framework identifies four logical layers of network management:

; [[Business management]] : Includes the functions related to business aspects, analyzes trends and quality issues, for example, or to provide a basis for billing and other financial reports.
; [[IT service management|Service management]] : Handles services in the network: definition, administration and charging of services.
; [[Network management]] : Distributes network resources, performs tasks of: configuration, control and supervision of the network.
; [[Element Management|Element management]] : Handles individual [[network element]]s including alarm management, handling of information, backup, logging, and maintenance of hardware and software.

A network element provides agent services, mapping the physical aspects of the equipment into the TMN framework.

== Recommendations ==
The TMN M.3000 series includes the following recommendations:

* M.3000 Tutorial Introduction to TMN
* M.3010 Principles for a TMN
* M.3020 TMN Interface Specification Methodology
* M.3050 [[Business Process Framework (eTOM)]]
* M.3060 Principles for the Management of the [[Next Generation Networks]]
* M.3100 Generic Network Information Model for TMN
* M.3200 TMN Management Services Overview
* M.3300 TMN Management Capabilities at the F Interface

==See also==
* [[Simple Network Management Protocol]] (SNMP)
* [[Common management interface protocol]] (CMIP, X.700)

==References==
{{reflist}}

== Further reading ==
*{{cite book |title=Multi-Domain Communication Management |last=Galis |first=A. |publisher=CRC Press |location=Boca Raton, Florida |date=July 2000 |isbn=0-8493-0587-X |url-access=registration |url=https://archive.org/details/multidomaincommu0000gali }} 420 pp with 740 pp appendices in CD-ROM

[[Category:Network protocols]]
[[Category:ITU-T recommendations]]
[[Category:Network management]]