




A BLOG ABOUT ME AND MY INTERESTS
Depending on the vendor’s choice, the EMS will communicate to a service provider’s network-wide "Network Management System (NMS)" employing various protocols and various interface standards.
Middleware
These systems are not specific to the telecom market but play an important role in managing complex OSS processes. Essential systems such as databases, messaging software, and systems management software need to be managed within a carrier's OSS environment. The software that performs this central management role, and which also manages the security of the network, is generically referred to as middleware.
Resource/Inventory Management
Resource management systems are still often known as inventory management systems, though this tends to suggest the management of a database of physical network elements. Resource management systems can track physical inventory and "logical" inventory (though not all perform both functions). By relating equipment deployment to the services being delivered by that equipment, a system ca
Service Assurance - Fault Management
These systems collect and present alarms and events by interrogating network equipment and/or element management systems, and many allow staff to log in to specific network elements to check for additional information that might be relevant to the alarm. While there some pure fault management systems, they often perform other tasks, such as performance monitoring.
Service Assurance - Performance Monitoring
These systems measure and monitor particular technologies, applications, or functions of networks. For instance, in an IP network they might monitor latency and packet loss. There are systems designed specifically to monitor voice performance, and others for frame relay, ATM, and so on. There are also OSSs specific to wireless networks, as they are optimized to monitor, for example, the quality of the air interface or the transmission path between base stations and the backbone network.Service Assurance -Service Management
Using fault and performance information, these systems deliver a view of service performance based on the customer's view, rather than the network manager's view. This type of OSS requires new metrics to define levels of acceptable performance, and often entirely new monitoring statistics. These systems are used in conjunction with service-level agreements and provide the information to determine whether the SLA metrics have been met by the service provider.Service Fulfillmint - Activation
Service fulfillment is the combination of all of the processes involved in implementing a service order and provisioning the service to customers. Activation means "turning on," or making available, a specified service. This could involve the dispatch of engineers and the installation of equipment, but assuming equipment is installed and available, a modern activation system will interface directly with element management systems or the relevant network elements. This means that, for end-to-end service requirements across a nationwide network, an activation system may need to issue commands to ATM or circuit switches to provision circuits, to Sonet terminals to allocate bandwidth, and to a wide array of access devices, such as DSLAMs, digital loop carriers (DLCs), or cable modems.
Service Fulfillment - Provisioning
Service fulfillment is the combination of all of the processes involved in implementing a service order and provisioning the service to customers. The provisioning function involves specifying the pieces of equipment and parts of the network that are needed for the service, and the allocation of bandwidth in the transport network. Provisioning is therefore closely tied with the engineering design function, and also with resource management systems. Provisioning systems will often have a workflow engine to manage both the automated processes as well as the manual processes that might be necessary when manual engineering inputs are required.