Element management system
Encyclopedia
An element management system (EMS) consists of systems and applications for managing network element
s (NE) on the network element management layer (NEL) of the Telecommunications Management Network
(TMN) model.
As recommended by ITU-T
, the element management system's key functionality is divided into five key areas - fault, configuration, accounting, performance and security (FCAPS
). Portions of each of the FCAPS functionality fit into the TMN models. On the northbound
the EMS interfaces to network management systems and or service management
systems depending on the deployment scenario. southbound
the EMS talks to the devices.
An element management system manages one or more of a specific type of telecommunications network element. Typically, the EMS manages the functions and capabilities within each NE but does not manage the traffic between different NEs in the network. To support management of the traffic between itself and other NEs, the EMS communicates upward to higher-level network management system
s (NMS) as described in the telecommunications management network layered model. The EMS provides the foundation to implement TMN–layered operations support system
(OSS) architectures that enable service providers to meet customer needs for rapid deployment of new services, as well as meeting stringent quality of service
(QoS) requirements. The TeleManagement Forum common object request broker architecture
(CORBA) EMS–to–NMS interface heralds a new era in OSS interoperability by making the TMN architecture a practical reality.
An EMS is a carrier class management solution. It is capable of scaling as the network grows, maintaining high performance levels as the number of network events increase, and providing simplified integration with third-party systems. It meets the service providers' expectations for integrated operational support systems.
Network element
A network element is usually defined as a manageable logical entity uniting one or more physical devices. This allows distributed devices to be managed in a unified way using one management system....
s (NE) on the network element management layer (NEL) of the Telecommunications Management Network
Telecommunications Management Network
The Telecommunications Management Network is a protocol model defined by ITU-T for managing open systems in a communications network. It is part of the ITU-T Recommendation series M.3000 and is based on the OSI management specifications in ITU-T Recommendation series X.700.TMN provides a framework...
(TMN) model.
As recommended by ITU-T
ITU-T
The ITU Telecommunication Standardization Sector is one of the three sectors of the International Telecommunication Union ; it coordinates standards for telecommunications....
, the element management system's key functionality is divided into five key areas - fault, configuration, accounting, performance and security (FCAPS
FCAPS
FCAPS is the ISO Telecommunications Management Network model and framework for network management. FCAPS is an acronym for fault, configuration, accounting, performance, security, the management categories into which the ISO model defines network management tasks...
). Portions of each of the FCAPS functionality fit into the TMN models. On the northbound
Northbound interface
Northbound and southbound interfaces relate to computer servers.-Definitions:A northbound interface of a component is an interface that conceptualizes the lower level details used by, or in, the component. It is used to interface with higher level layers using the southbound interface of the...
the EMS interfaces to network management systems and or service management
Service management
Service management is integrated into supply chain management as the joint between the actual sales and the customer. The aim of high performance service management is to optimize the service-intensive supply chains, which are usually more complex than the typical finished-goods supply chain...
systems depending on the deployment scenario. southbound
Northbound interface
Northbound and southbound interfaces relate to computer servers.-Definitions:A northbound interface of a component is an interface that conceptualizes the lower level details used by, or in, the component. It is used to interface with higher level layers using the southbound interface of the...
the EMS talks to the devices.
An element management system manages one or more of a specific type of telecommunications network element. Typically, the EMS manages the functions and capabilities within each NE but does not manage the traffic between different NEs in the network. To support management of the traffic between itself and other NEs, the EMS communicates upward to higher-level network management system
Network management system
A network management system is a combination of hardware and software used to monitor and administer a computer network.Individual network elements in a network are managed by an element management system.-Tasks and operational details:...
s (NMS) as described in the telecommunications management network layered model. The EMS provides the foundation to implement TMN–layered operations support system
Operations support system
Operations support systems are computer systems used by telecommunications service providers. The term OSS most frequently describes "network systems" dealing with the telecom network itself, supporting processes such as maintaining network inventory, provisioning services, configuring network...
(OSS) architectures that enable service providers to meet customer needs for rapid deployment of new services, as well as meeting stringent quality of service
Quality of service
The quality of service refers to several related aspects of telephony and computer networks that allow the transport of traffic with special requirements...
(QoS) requirements. The TeleManagement Forum common object request broker architecture
Common Object Request Broker Architecture
The Common Object Request Broker Architecture is a standard defined by the Object Management Group that enables software components written in multiple computer languages and running on multiple computers to work together .- Overview:CORBA enables separate pieces of software written in different...
(CORBA) EMS–to–NMS interface heralds a new era in OSS interoperability by making the TMN architecture a practical reality.
Examples of elements which can be managed through the ems interfaces.
- Cable telephony media gateway
- Media gateway
- Soft switch
- Video compression technology provider
- Wireless broadband provider
Comparison with network management system
NMSs provides an integrated system for sharing device information across management applications, automation of device management tasks, visibility into the health and capability of the network, and identification and localization of network trouble. By using common centralized systems and network-inventory knowledge, an NMS delivers a unique platform of cross-functional management capabilities that reduces network administration overhead.An EMS is a carrier class management solution. It is capable of scaling as the network grows, maintaining high performance levels as the number of network events increase, and providing simplified integration with third-party systems. It meets the service providers' expectations for integrated operational support systems.