Communications service providers (CSP) strive to differentiate themselves from their competitors by implementing attractive Service Level Agreements (SLA). SLAs are formal contracts where the level of service delivered by the CSP to his customer is stipulated. An SLA may specify levels of service availability, performance, operation, etc. as well as penalties upon violation of the SLA.
Offering SLAs implies that the service provider has the ability to monitor, act and report the level of service, in order to assure the quality of services delivered to the customers. Service Assurance refers to all the activities performed for such an assurance. The goal of Service Assurance is to provide an optimal customer experience, that helps retain existing customers, attract new customers and prevent penalties arising out of violation of SLAs.
The following sub-sections introduce some of the common service Assurance systems.
Fault Management Systems are designed for detection, isolation and correction of malfunctions in a communications network. They monitor and process network alarms generated by network elements (routers, switches, gateways, etc.). An alarm* is a persistent indication of a fault that is cleared only when the triggering condition is resolved.
Examples of trouble or fault in a network are damage to an optical fiber line, switch failure, etc. Such a problem in the network can result in a chain reaction where many network elements in a certain path produce alarms*.
Fault Management Systems may be either a component within Network Management Systems or as a standalone set of system and application software.
Offering SLAs implies that the service provider has the ability to monitor, act and report the level of service, in order to assure the quality of services delivered to the customers. Service Assurance refers to all the activities performed for such an assurance. The goal of Service Assurance is to provide an optimal customer experience, that helps retain existing customers, attract new customers and prevent penalties arising out of violation of SLAs.
The following sub-sections introduce some of the common service Assurance systems.
Fault Management Systems are designed for detection, isolation and correction of malfunctions in a communications network. They monitor and process network alarms generated by network elements (routers, switches, gateways, etc.). An alarm* is a persistent indication of a fault that is cleared only when the triggering condition is resolved.
Examples of trouble or fault in a network are damage to an optical fiber line, switch failure, etc. Such a problem in the network can result in a chain reaction where many network elements in a certain path produce alarms*.
Fault Management Systems may be either a component within Network Management Systems or as a standalone set of system and application software.
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