Service assurance, in telecommunications, is the application of policies and processes by a Communications Service Provider (CSP) to ensure that services offered over networks meet a pre-defined service quality level for an optimal subscriber experience.
The practice of service assurance enables CSPs to identify faults in the network and resolve these issues in a timely manner so as to minimize service downtime. The practice also includes policies and processes to proactively pinpoint, diagnose and resolve service quality degradations or device malfunctions before subscribers are impacted.
Service assurance encompasses the following:
There are many drivers for service assurance adoption, with some considering the most important to be the ability to measure the performance of a service. A subscriber’s service experience quality can be directly linked to customer churn. [1] Therefore, maintaining satisfactory service quality levels is key to creating “customer stickiness. [2] ”
Other factors driving growing interest in service assurance include increasing competition, new challenges due to the convergence of networks, services, applications and devices, enabling services over IP and the merging of IT and telecommunications services. [3] But ultimately, it is the CSP’s ability to ensure a satisfactory level of QoS that will have the greatest impact on revenue. [4]
The importance of service performance is also reinforced by research stating that two thirds of subscribers will stop trying a new service after two failed attempts with that service. [5] Therefore, it is increasingly apparent that service assurance tools must be put in place prior to the introduction of a new service if it is to be successful in the market. This is particularly true of deployments of such services as VoIP, IPTV and mobile video. [6]
Service assurance spending by CSPs is forecast to grow to $USD 3.0 billion by 2011. Leading global service assurance providers include InfoVista, VIAVI, TEOCO, Ericsson, nsn, EXFO, MYCOM OSI, Centina, [7] Anritsu, Epitiro, Riverbed Technology, Spirent, Empirix, JumpSoft, Computer Associates, EMC, Telcordia, Tektronix, RADCOM, CENX, Agilent, Cisco, HP, IBM, IBM Tivoli/Netcool and Softenger (I) Pvt Ltd. [8]
Quality of service (QoS) is the description or measurement of the overall performance of a service, such as a telephony or computer network, or a cloud computing service, particularly the performance seen by the users of the network. To quantitatively measure quality of service, several related aspects of the network service are often considered, such as packet loss, bit rate, throughput, transmission delay, availability, jitter, etc.
Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol (IP) networks, such as the Internet.
A service-level agreement (SLA) is an agreement between a service provider and a customer. Particular aspects of the service – quality, availability, responsibilities – are agreed between the service provider and the service user. The most common component of an SLA is that the services should be provided to the customer as agreed upon in the contract. As an example, Internet service providers and telcos will commonly include service level agreements within the terms of their contracts with customers to define the level(s) of service being sold in plain language terms. In this case, the SLA will typically have a technical definition of mean time between failures (MTBF), mean time to repair or mean time to recovery (MTTR); identifying which party is responsible for reporting faults or paying fees; responsibility for various data rates; throughput; jitter; or similar measurable details.
In telecommunications rating is the activity of determining the cost of a particular call. The rating process involves converting call-related data into a monetary-equivalent value.
Internet Protocol television (IPTV) is the delivery of television content over Internet Protocol (IP) networks. This is in contrast to delivery through traditional terrestrial, satellite, and cable television formats. Unlike downloaded media, IPTV offers the ability to stream the source media continuously. As a result, a client media player can begin playing the content almost immediately. This is known as streaming media.
Teletraffic engineering, telecommunications traffic engineering, or just traffic engineering when in context, is the application of transportation traffic engineering theory to telecommunications. Teletraffic engineers use their knowledge of statistics including queuing theory, the nature of traffic, their practical models, their measurements and simulations to make predictions and to plan telecommunication networks such as a telephone network or the Internet. These tools and knowledge help provide reliable service at lower cost.
Quality of service (QoS) mechanism controls the performance, reliability and usability of a telecommunications service. Mobile cellular service providers may offer mobile QoS to customers just as the fixed line PSTN services providers and Internet service providers may offer QoS. QoS mechanisms are always provided for circuit switched services, and are essential for non-elastic services, for example streaming multimedia. It is also essential in networks dominated by such services, which is the case in today's mobile communication networks.
A service delivery platform (SDP) is a set of components that provides a service(s) delivery architecture for a type of service delivered to consumer, whether it be a customer or other system. Although it is commonly used in the context of telecommunications, it can apply to any system that provides a service. Although the TM Forum (TMF) is working on defining specifications in this area, there is no standard definition of SDP in industry and different players define its components, breadth, and depth in slightly different ways.
Carrier Ethernet is a marketing term for extensions to Ethernet for communications service providers that utilize Ethernet technology in their networks.
An element management system (EMS) consists of systems and applications for managing network elements (NE) on the network element-management layer (NEL) of the Telecommunications Management Network (TMN) model.
Objective Systems Integrators (OSI) is a multinational computer technology corporation that develops, manufactures, licenses, and supports software products which automate the monitoring, control, delivery, and management of services for multinational corporation service providers including:
Fulfillment of telecommunications services involves a series of supply chain activities responsible for assembling and making services available to subscribers. These activities delineate an operational infrastructure whose efficiency relies upon its ability to allow a communications service provider (CSP) to match the supply of services with demand in an economical way and with consistently high levels of quality and reliability.
Real time policy, in telecommunications, is a technical capability used to implement a wide array of business rules and subscriber preferences. While the genesis of policy was in quality of service (QoS) and congestion control, it has evolved as Communications Service Providers (CSPs) use it to create personalized, user-directed and interactive services and implement business objectives.
Real-time charging is an extension of call accounting that enables communications service providers (CSPs) to apply customer-specific rules for rating, discounting, promotions and settlements to better personalize the telecom experience. As CSPs begin to roll out advanced networks and services, offering and making money on these services requires the ability to do real-time charging.
Network intelligence (NI) is a technology that builds on the concepts and capabilities of deep packet inspection (DPI), packet capture and business intelligence (BI). It examines, in real time, IP data packets that cross communications networks by identifying the protocols used and extracting packet content and metadata for rapid analysis of data relationships and communications patterns. Also, sometimes referred to as Network Acceleration or piracy.
Application enablement is an approach which brings telecommunications network providers and developers together to combine their network and web abilities in creating and delivering high demand advanced services and new intelligent applications.
Hammer Technologies Inc. is a privately held company which designs and manufactures service assurance testing and monitoring equipment for IP-based communications networks such as Voice-over-Internet-Protocol (VoIP), IP Multimedia Subsystem (IMS)-based, next generation network and 5G wireless networks. Hammer offers enterprise and carrier grade products as well as quality assurance products for network equipment manufacturers. Hammer is headquartered in Billerica, MA. On April 21, 2021, Hammer was acquired by Infovista, a Network automation software. Infovista, which is majority owned by Apax Partners, said the deal “brings together a team of over 1,000 professionals serving over 1,700 customers across more than 150 countries, including 23 of the top 30 CSPs globally[1].”
Operations support systems (OSS), operational support systems in British usage, or Operation System (OpS) in NTT, are computer systems used by telecommunications service providers to manage their networks. They support management functions such as network inventory, service provisioning, network configuration and fault management.
Telecommunications billing is the group of processes of communications service providers that are responsible to collect consumption data, calculate charging and billing information, produce bills to customers, process their payments and manage debt collection.
Net bias is the counter-principle to net neutrality, which indicates differentiation or discrimination of price and the quality of content or applications on the Internet by ISPs. Similar terms include data discrimination, digital redlining, and network management.