next generation intelligent networks Atos for Your business technologists. Powering progress

Transcription

1 next Atos for generation intelligent networks Your business technologists. Powering progress

2 2 Next Generation Intelligent Networks

3 Contents abstract 4 overview 6 ngin for the subscriber 8 Traditional Service Concept 10 Ngin Service Concept 12 ngin for the service provider 14 Business Strategies for the Enterprise Market 16 Business Strategies for the Residential Market 18 market offerings 20 Enterprise Mobile Centrex 22 Enterprise Convergent Centrex 24 Enterprise IP Centrex 26 Enterprise Contact Center 28 Residential Market 30 Other examples of service offerings 31 services and features 32 Virtual Private Network 34 Ip Line Services 36 Centrex and Unified Communication 38 Contact Center 42 Presence Enabler 44 Horizontal Features 46 Add-on in Services 47 Next Generation Intelligent Networks 3

4 Abstract Atos has developed an advanced Next Generation Intelligent Networks (NGIN) product that pushes the envelope of technology in order to provide innovative telephony Centrex services that allow Service Providers to expand business into new segments, lock-in customers, upsell new services, and become an innovator on the market. This document explains: What the NGIN means for users the convergent user concept. What the NGIN means for Service Providers. How the NGIN supports all of the business models a Service Provider would want to launch on the market, Enterprise and Residential. How the NGIN supports business models for both developed and emerging markets. How the large suite of NGIN services can be combined into a variety of market offerings. Key technological capabilities of the NGIN. Deep dive into the Centrex and other convergent services available Why Atos? Proven technology Huge suite of off-the-shelf services Flexibility to support business models of: FMS and FMC Developed as well as emerging markets Enterprise and residential Prepaid or postpaid Mobile or Mobile+IP Strong mix of telco business, technology, telco networks, and system integration skills. 4 Next Generation Intelligent Networks

5 Next Generation Intelligent Networks 5

6 Overview The Atos NGIN consists of an extensive catalogue of off-the-shelf services available on a horizontal platform that allows the deployment of traditional or next generation service offerings for mobile and SIP phones. The principal market offering enabled by the Atos NGIN is the hosted voice Centrex, also known as cloud Centrex Services. One of the main characteristics of the Atos NGIN is its versatility to enable the market offerings that are needed by the Telco Service Provider. The Atos NGIN can be used to launch FMS (Fixed Mobile Substitution) and FMC (Fixed Mobile Convergence) business strategies to the market. FMS or FMC strategies can be launched at the same time or independently, or an evolution can be taken from FMS to FMC. No matter which approach is taken, FMS and FMC can co-exist and can be offered at the same time to different market segments such as residential and/or small, medium, and large Enterprises as well as multinational corporations. The NGIN addresses the main service layer challenges existing today, such as: Offering a simple path for operators moving from circuit switched to IP core networks. Offering network agnostic value-added services. Using one versatile infrastructure for fixed, mobile and convergent market offerings. Developing new market offerings for both Enterprise and Residential customers. To address these challenges, the Atos NGIN offers: Hosted Voice Mobile and IP voice services are hosted in the network with no need for onsite PABX equipment. Device Convergence Support for Mobile and SIP devices Service Convergence The same service and user experience for all devices. Network Convergence A leg in both the CS and IP network domains. Payment Convergence Support for both postpaid and prepaid subscribers. Service Catalogue A shopping list of attractive and interoperable services that Service Providers can adapt to their market demands and use to create a diversity of market offerings. Ready-to-go market offerings Mobile Centrex, Convergent Centrex, and Unified Communications for Enterprise and residential markets. Smooth evolution of the traditional IN services to a converged world. 6 Next Generation Intelligent Networks

7 Hosting services from the network instead of using on-site equipment provides Enterprises with several key benefits: Lower Enterprise total cost of ownership Hosted voice eliminates the CapEx and OpEx of onsite infrastructure, and merges the fixed and mobile communications costs. Predictable expenditures Hosted voice transfers all communications costs to the telephone bill. Flexibility Hosted voice allows easier management of capacity changes when hiring or adjusting work force, or opening and closing offices. Business continuity Hosted voice services do not have to be interrupted when moving offices, allowing more freedom to manage office space. Some of the Benefits that the Atos NGIN gives to the Telcos are: One infrastructure for all network types and market offerings Proven and strong track record delivering business results. Easy integration and reliable consistency. Open, flexible and extensible deployments. Telecom grade reliability. Standards-based platform. Next Generation Intelligent Networks 7

8 ngin for the subscriber The NGIN concept has many possible definitions in terms of technologies and functionalities. But, the most important aspect should be what the NGIN means to a subscriber. For a subscriber, the definition of NGIN can be summed up as a new service concept where: Services are independent of the devices used by the subscriber. Subscribers are not limited to only one service or specific combinations of a couple of services, but rather subscribers can have many services at the same time and in a consistent way, including rich blended services. Subscribers can control their usage with (prepaid, postpaid, or cost control modes) without losing functionality. This idea is best illustrated by comparing a traditional service concept to the NGIN service concept. 8 Next Generation Intelligent Networks

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10 Traditional Service Concept In a traditional service concept the services are linked to a device. For example: A mobile phone may have services such as prepaid, Home Zone, TwinSim, and Voic , as well as supplementary services provided by the GSM network. A POTS phone may have CLIP, CLIR, CW, CH, Call Restrictions, and Voic (but as different voice mailbox from the GSM phone) and other supplementary services. An IP desk phone may have Centrex services such as voic , audio conferencing, Virtual Call Center or a switchboard. However, even when the same services are available in different devices, the behavior of the services is usually quite different and therefore the user experience is bad (or at least could be improved) and not unified. A quintessential example is having a different voice mailbox for each device. 10 Next Generation Intelligent Networks

11 CF Short Codes CH Switch Barring Fixed SIP IMS PABX SIP AS Callback Board Voice Mail Audio Conf Mobile GSM GSM IN Prepaid Short Codes HOZ CF, CH, CW Twin SIM CLIP CLIR Prepay Voice Mail Next Generation Intelligent Networks ngin for the subscriber 11

12 NGIN Service Concept In an NGIN service concept, the services are independent of the devices. In other words, a subscriber can sign up for services without worrying about which devices can support the service. With the NGIN service concept the concept of convergence becomes real: All devices have the same services available. The user experience is consistent across all devices. Any device (one or more mobiles, SIP phones or PABX extensions) can be used transparently, and even more, devices can be swapped during a call (e.g., call toggle type services). A subscription can be associated with multiple numbers (e.g. mobile, geographic, and nomadic numbers). All user devices can be addressed by any of the numbers that are associated to the subscription. All user devices ring simultaneously or sequentially. The same profile applies to all devices in terms of call restrictions/barring and supplementary services (CLIP, CLIR, CB, CF, CH, CT, CW). Location, presence, and call status information about all devices (mobile and fixed) is available. In this advanced presence concept, the status of the devices is aggregated to avoid situations where, for example, a desk phone rings when an associated mobile phone is engaged. All user devices belong to one subscription so that they can all be unified in one bill. 12 Next Generation Intelligent Networks

13 CLIP IMS NGIN VPN Short Codes Barring HOZ Switch Board Mgr Sec CLIR RBWF Absent Reason Voice Mail CF, CH, CW Audio Conf Twin SIM Hunt Group Prepay GSM Next Generation Intelligent Networks ngin for the subscriber 13

14 ngin for the service provider For a service provider, the NGIN must facilitate addressing the customer base (Enterprise or Residential) with generalised business strategies and market offerings for both developed and emerging markets. The benefits of the NGIN Service Concept Increase market share Get new customers or add new revenue streams in existing customers. FMS Grow mobile business into the wireline service space. Provide all Enterprise PBX needs with a mobile service. FMC Provide a convergent user experience. Tie mobile and fixed services together. Provide all communications to customers, not just mobile, fixed line, or Internet services. Reduce churn - Tie mobile and fixed line services together. Once users experience a convergent service, it will be difficult to go back to a basic service. Few Service Providers can offer all communication needs. Once a total communications approach is taken, churning will require contracting mobile and fixed line services separately. Increase ARPU More talk time Charge monthly fees for services 14 Next Generation Intelligent Networks

15 10% churn reduction for FMC customers 16% increase in ARPU 12% annual increase in Enterprise market share Proven Results 4% churn reduction for FMS customers 4% increase in talk time Next Generation Intelligent Networks ngin for the service provider 15

16 Business Strategies for the Enterprise Market The NGIN service layer supports the various possible business strategies that a service provider needs to offer to the Enterprise market. Well known examples of business strategies for the Enterprise segment are: FMS (Fixed-Mobile Substitution) In an FMS model, mobile operators replace PABX extensions with mobile subscriptions and provide PABX-like features over the mobile network. In this way, a mobile operator gets additional mobile income from the replacement of fixed lines by mobile subscriptions. FMC (Fixed-Mobile Convergence) Also known as a total communication provider model, in an FMC model, fixed lines are replaced by IP phones and the IP and mobile extensions are integrated seamlessly. PABX features are delivered by the service layer in a mixed mobile, PSTN, and IP environment. In this way, an operator provides new convergent services at a competitive price. FMI (Fixed-Mobile Integration) Also known as business trunking, in an FMI model, the CS/PS PABX s are integrated by connecting them over the IMS network. The service layer is responsible for implementing legal obligations such as emergency calls and lawful intercept. In this way, an operator can integrate the PABX extensions of the Enterprise with the mobile extensions while allowing the Enterprise to amortize current infrastructure. 16 Next Generation Intelligent Networks

17 It is important to stress that these Enterprise business strategies can be used simultaneously by the same service provider to address different market segments. For example: A service provider with mobile operations: FMS is a perfect opportunity to take business away from fixed line providers by offering all of the traditional fixed line services in an all mobile environment and hosted from the network. This does not exclude the possibility to integrate company PABX (FMI) in the solution. A service provider with mobile and fixed operations in advanced markets: FMS is suitable for home office and small companies who do not need a fixed line service. FMC is suitable for medium and large sized companies who have good IP infrastructure and who do not have a significant investment in on-site PABX equipment. FMI is suitable for large Enterprises who want to finish amortizing on-site PABX equipment while adopting FMC solution. In fact, typically an Enterprise would use FMI as a way of enabling the FMC. Next Generation Intelligent Networks A service provider with operations in dispersed geographies: For emerging markets, due to lack of (or poor) IP connectivity, a pure FMS approach is most suitable in the short term and for most cases while the possibility to provide an FMC and/ or FMI offering is valuable for specific cases where conditions and infrastructure allow it. For advanced markets, FMS, FMC, and FMI can be offered to different market segments as described above. ngin for the service provider 17

18 Business Strategies for the Residential Market In addition to addressing the Enterprise market, the NGIN is very adequate for the residential market as well. For the residential market the FMS and FMC business strategies are applicable while the FMI business strategy is obviously not. FMS and FMC can be used for different consumer behaviors depending on the kind of service provider. For example: A service provider with mobile operations: FMS is a perfect strategy for a mobile operator to capture subscribers from the incumbent wireline operators, especially in an environments where geographic numbers can be assigned to mobiles or environments with full number portability. FMS is suitable for consumers who do not feel the need to have a fixed line phone service but who may want a geographic number associated to the mobile phone. A service provider with mobile and fixed operations in advanced markets (and these markets also exist in emerging markets): FMS is suitable for consumers who do not feel the need to have a fixed line phone service but who may want a geographic number associated to the mobile phone. FMC is suitable for consumers who want to have some convergence between the mobile and fixed line. In this model, the fixed line service is provided by the NGIN s VoIP/DSL service with the same functionality as the traditional PSTN service. A dual or sequential ringing can be set up between the mobile and home VoIP phones, and they shared a voice mailbox. IP/Broadband based residential services In this model, operators can offer a VoIP/DSL service with the same functionality as the traditional PSTN service. In this way, mobile and fixed operators can enter a new market. Convergent VAS Services The Enterprise market is leading innovation in the area of VAS in the last few years. Most of the features implemented for the Enterprise market in NGIN platforms can also be applied to residential users. This includes all personal features. But also group features are applicable to families and other types of non-enterprise user groups. These features are available to users with mobile and fixed (PSTN or IP) devices or combinations of them. A single service covers the needs of many user types. 18 Next Generation Intelligent Networks

19 Next Generation Intelligent Networks ngin for the service provider 19

20 Market offerings Enabling the quick bundling of services into offerings is one of the key differentiators of the NGIN concept. In addition to the service independence from the point of view of the subscriber and the general business strategies of the service provider, the NGIN must enable a Service Provider to bundle different NGIN services into market products or service offerings. The Atos NGIN consists of a comprehensive, feature rich suite of off-the-shelf services. These off-the-shelf NGIN services can be bundled together into different service or market offerings. Service Providers can implement the whole service layer for voice services for Enterprise and residential users. The Service Provider can combine the NGIN services to shape several commercial or market offerings. With the NGIN, the market offerings are also flexible enough such that the Service Provider can also allow corporate customers to select NGIN services and functionalities as best suit their needs. VPN & Trunking Personal Centrex Front Office Ms Lync Integration Mobile Support VPN Roaming features SIP Support PBX Trunking Advanced PBX integr. Private Numbering Plan Closed User Groups Restriction Management Preferential Charging Favorites Partner VPN Private Calls Calendar Company Cost Control Office Zone International VPN Incoming Call Display Manager- Assistant End User ICS Absence Feature Ring Back When Free Group Centrex Hunting Chain Hunt Group Call Queuing Group CLI Group Call Pick-Up Switchboard Operator Auto-Attendant Unified Comms Converged User Call Toggle Click-to-Dial Follow-Me PC Toolbars Communicator Audio Conferencing Presence Enabler MS Lync endpoints Lync Converged Users Presence Enabler Mobile Call Status SIP Call Status Add-On IN Home Zone Local Diversion Roaming Prepaid IN front-end Multi-SIM Horizontal Features IP Line Services CDR Generation Web Services API On-line Charging Integration GUI on Mobile Feature Access Codes Common Address Book Music Repository CLIR / CLIP CF, CW, CH, CT, CB Restrictions (ODBs) Error Code Handling Emergency Calls VoIP with Mobile Backup Malicious Call Identification Long Call Handling Call Limiter Missed Call Advisor Distinctive Ringing 20 Next Generation Intelligent Networks

21 Not all Service Providers have the same network needs and goals, and they may demand diverse strategies. Mobile Service Providers, for instance, have to address subscriber churn, fuelled by the new opportunities contributed by convergent Service Providers, and, therefore, they need new strategies to tackle churn while increasing ARPU. Fixed Service Providers, on the other hand, need to find attractive alternatives in order to be able to compete with Mobile and Convergent Service Providers. The ready-to-go NGIN market offerings are devised to address the typical market demands on Service Providers, and each one of them is oriented to be applied in line with different strategies. The following table shows four principal market offerings that can be built up with the NGIN, and provides guidance on the most adequate offering for each type of Service Provider: All NGIN offerings share a common objective and a convergent platform that complements their features with others that are not standard for this kind of platform, such as on-line charging, pure IN services, mobile roaming, and call status, thereby enhancing the user experience. NGIN convergent solutions provide Service Providers with a tool they can use to retain their customers, offering also a broader range of functionalities, enhanced flexibility and integration, operation and maintenance capabilities that allow improving subscriber ARPU. Mobile Centrex Convergent Centrex Contact Center Convergent Consumer Mobile Service Provider Fixed Service Provider Convergent Service Provider Next Generation Intelligent Networks market offerings 21

22 Enterprise Mobile Centrex VPN, Centrex, and other advanced functionalities are available to mobile users. The services are provided in a hosted mode. Enterprise Mobile Centrex Service Catalogue VPN & Trunking Mobile Support VPN Roaming features SIP Support PBX Trunking Advanced PBX integr. Private Numbering Plan Closed User Groups Restriction Management Preferential Charging Favorites Partner VPN Private Calls Calendar Company Cost Control Office Zone International VPN Personal Centrex Incoming Call Display Manager- Assistant End User ICS Absence Feature Ring Back When Free Group Centrex Hunting Chain Hunt Group Call Queuing Group CLI Group Call Pick-Up Front Office Switchboard Operator Auto-Attendant Unified Comms Converged User Call Toggle Click-to-Dial Follow-Me PC Toolbars Communicator Audio Conferencing Presence Enabler Ms Lync Integration MS Lync endpoints Lync Converged Users Presence Enabler Mobile Call Status SIP Call Status Add-On IN Home Zone Local Diversion Roaming Prepaid IN front-end Multi-SIM Horizontal Features CDR Generation Feature Access Codes Web Services API Common Address Book On-line Charging Integration Music Repository GUI on Mobile CLIR / CLIP CF, CW, CH, CT, CB Restrictions (ODBs) Error Code Handling Emergency Calls VoIP with Mobile Backup IP Line Services Malicious Call Identification Long Call Handling Call Limiter Missed Call Advisor Distinctive Ringing 22 Next Generation Intelligent Networks

23 Description The Enterprise Mobile Centrex offering is a functionally rich Centrex and Unified Communications solution aligned for an FMS market strategy. The Mobile Centrex is a full-featured hosted voice PABX service, which provides all the needs of an Enterprise, even the Contact Center functionality, from the cloud. The Mobile Centrex enables businesses to replace office phones with mobiles. Therefore, from existing customers, the Service Provider captures additional traffic and revenues in the critical corporate segment, and, even more, the Mobile Centrex helps attract new customers and retain existing customers in the face of competition. Market Application The Mobile Centrex is a complete solution for mobile operators targeting small and medium sized companies. It enables them to offer cloud Centrex services to their customers with only mobile infrastructure and to capture and maintain a substantial part of their telephony spending. The Mobile Centrex also addresses the business needs of those Service Providers that decide to evolve towards next generation networks using a pure FMS strategy based on a complete set of PABX mobility, hosted and multitenant functionalities. In other words, companies enjoying only mobile communications can start to enjoy PABX functionalities. The Mobile Centrex is, therefore, a complete solution for SoHo, SMB and large Enterprises with Branch Offices needing to grant mobility to their business without losing customer functionality. Next Generation Intelligent Networks market offerings 23

24 Enterprise Convergent Centrex VPN, Centrex, and other advanced functionalities are available to mobile and SIP users. The services are provided in a hosted mode. Users can have and use mobiles, SIP phones, and company PABX extensions. All types of users in the company are integrated and receive the same basic and advanced functionalities Enterprise Convergent Centrex Service Catalogue Vpn & Trunking Mobile Support VPN Roaming features SIP Support PBX Trunking Advanced PBX integr. Private Numbering Plan Closed User Groups Restriction Management Preferential Charging Favorites Partner VPN Private Calls Calendar Company Cost Control Office Zone International VPN Personal Centrex Incoming Call Display Manager- Assistant End User ICS Absence Feature Ring Back When Free Group Centrex Hunting Chain Hunt Group Call Queuing Group CLI Group Call Pick-Up Front Office Switchboard Operator Auto-Attendant Unified Comms Converged User Call Toggle Click-to-Dial Follow-Me PC Toolbars Communicator Audio Conferencing Presence Enabler Ms Lync Integration MS Lync endpoints Lync Converged Users Presence Enabler Mobile Call Status SIP Call Status Add-On IN Home Zone Local Diversion Roaming Prepaid IN front-end Multi-SIM Horizontal Features CDR Generation Feature Access Codes Web Services API Common Address Book On-line Charging Integration Music Repository GUI on Mobile CLIR / CLIP CF, CW, CH, CT, CB Restrictions (ODBs) Error Code Handling Emergency Calls VoIP with Mobile Backup IP Line Services Malicious Call Identification Long Call Handling Call Limiter Missed Call Advisor Distinctive Ringing 24 Next Generation Intelligent Networks

25 Description The Enterprise Convergent Centrex offering provides a functionally rich, truly convergent Centrex and Unified Communications solution aligned for a full FMC market strategy. The FMS strategy can still be offered simultaneously along with the FMC strategy, each targeting different market segments. The Convergent Centrex offering mainly targets corporate environments, and is based on a fully hosted solution, which does not require the deployment of hardware at the customer premises. By using only one convergent platform, the NGIN provides a complete portfolio of functionalities covering both mobile and SIP extensions, with only one infrastructure. Furthermore, the Convergent Centrex is devised in such a way that it is always possible to integrate IN services, thus allowing for the coexistence and evolution of traditional IN legacies. Next Generation Intelligent Networks Market Application The Convergent Centrex is a complete solution for convergent operators targeting companies who do not want to let go of the concept of fixed line service. The Convergent Centrex enables Service Providers to offer cloud Centrex services to their customers. As the services are provided to both mobile and fixed lines, the Service Providers capture and maintain all of the telephony spending of their customers wallets. The Convergent Centrex is the right solution for companies that need to improve their communications adding new advanced services over a Virtual Private Network environment, to SIP, mobile and PSTN devices. The Convergent Centrex allows companies to replace their existing PABXs by opening up a way to obtain the same features without the need to maintain the on-site infrastructure. The Atos Convergent Centrex solution can be and is used for all the market target segments: SoHo, SMB, and Large Enterprises. market offerings 25

26 Enterprise IP Centrex VPN, Centrex, and other advanced functionalities are available to SIP users, including advanced functionalities like the Contact Center. Enterprise IP Centrex Service Catalogue Vpn & Trunking Mobile Support VPN Roaming features SIP Support PBX Trunking Advanced PBX integr. Private Numbering Plan Closed User Groups Restriction Management Preferential Charging Favorites Partner VPN Private Calls Calendar Company Cost Control Office Zone International VPN Personal Centrex Incoming Call Display Manager- Assistant End User ICS Absence Feature Ring Back When Free Group Centrex Hunting Chain Hunt Group Call Queuing Group CLI Group Call Pick-Up Front Office Switchboard Operator Auto-Attendant Unified Comms Converged User Call Toggle Click-to-Dial Follow-Me PC Toolbars Communicator Audio Conferencing Presence Enabler Ms Lync Integration MS Lync endpoints Lync Converged Users Presence Enabler Mobile Call Status SIP Call Status Add-On IN Home Zone Local Diversion Roaming Prepaid IN front-end Multi-SIM Horizontal Features CDR Generation Feature Access Codes Web Services API Common Address Book On-line Charging Integration Music Repository GUI on Mobile CLIR / CLIP CF, CW, CH, CT, CB Restrictions (ODBs) Error Code Handling Emergency Calls VoIP with Mobile Backup IP Line Services Malicious Call Identification Long Call Handling Call Limiter Missed Call Advisor Distinctive Ringing 26 Next Generation Intelligent Networks

27 Description The IP Centrex offering provides a functionally rich VoIP service, enabling businesses to replace office phones with IP phones. The IP Centrex is a full-featured hosted voice PABX service, which provides all the needs of an Enterprise, even the Contact Center functionality. The IP Centrex offering mainly targets corporate environments, and is based on a fully hosted solution, which does not require the deployment of hardware at the customer premises. By using only one convergent platform, the NGIN can later be extended to support mobile extensions and integration of IN services, thus allowing for the coexistence and evolution of traditional IN legacies. Market Application The IP Centrex is a complete solution for fixed line operators targeting companies who do not want to let go of the concept of fixed line service. The IP Centrex enables Service Providers to offer hosted virtual PABX services to their customers. The IP Centrex is the right solution for companies that need to improve their communications adding new advanced services over a Virtual Private Network environment. The IP Centrex allows companies to replace their existing PABXs by opening up a way to obtain the same features without the need to maintain the on-site infrastructure. The Atos IP Centrex solution can be and is used for all the market target segments: SoHo, SMB, and Large Enterprises. Next Generation Intelligent Networks market offerings 27

28 Enterprise Contact Center Sophisticated contact center functionality can be provided as a dedicated service. Customers do not need to make large investments or worry about supporting complex infrastructures. Enterprise Contact Centrer Service Catalogue VPN & Trunking Mobile Support VPN Roaming features SIP Support PBX Trunking Advanced PBX integr. Private Numbering Plan Closed User Groups Restriction Management Preferential Charging Favorites Partner VPN Private Calls Calendar Company Cost Control Office Zone International VPN Personal Centrex Incoming Call Display Manager- Assistant End User ICS Absence Feature Ring Back When Free Group Centrex Hunting Chain Hunt Group Call Queuing Group CLI Group Call Pick-Up Front Office Switchboard Operator Auto-Attendant Unified Comms Converged User Call Toggle Click-to-Dial Follow-Me PC Toolbars Communicator Audio Conferencing Presence Enabler Ms Lync Integration MS Lync endpoints Lync Converged Users Presence Enabler Mobile Call Status SIP Call Status Add-On IN Home Zone Local Diversion Roaming Prepaid IN front-end Multi-SIM Horizontal Features CDR Generation Feature Access Codes Web Services API Common Address Book On-line Charging Integration Music Repository GUI on Mobile CLIR / CLIP CF, CW, CH, CT, CB Restrictions (ODBs) Error Code Handling Emergency Calls VoIP with Mobile Backup IP Line Services Malicious Call Identification Long Call Handling Call Limiter Missed Call Advisor Distinctive Ringing 28 Next Generation Intelligent Networks