Product Assessment - Hosted Multimedia Application Servers

Nokia - Telephony Application Server (TAS) Snow, David | December 01, 2016 Product Assessment - Hosted Multimedia Application Servers JJ Summary

David Snow

Current Analysis Principal Analyst IP Services Infrastructure

Competitive Strengths

• The Nokia TAS is the latest publicly announced application server, targeting any combination of fixed/ mobile/enterprise market applications. • It is a purpose-built, high standards conformance, evolved IMS application server supporting per subscriber registration service chaining. • The Nokia TAS is endowed with both API exposure and built-in service creation and customization capabilities. • High availability is supported using N+K redundancy and shared data layer call state replication. • The Nokia TAS inherits a large carrier installed base with leading network support credentials, especially for VoLTE. Competitive Weaknesses

• The Nokia TAS is not commercially available until early 2017. • The Nokia TAS faces very strong and increasing competition in the enterprise • The Nokia TAS is the latest publicly announced application server, evolving • The new Nokia TAS is not yet commercially available, although it is in communications market from both BroadSoft and Huawei. • Nokia lacks an in-house complementary client software portfolio compared with some other players.

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Product Assessment - Hosted Multimedia Application Servers Current Perspective

The Nokia Telephony Application Server (TAS) is a leader among its competitors in the application server segment of the market. It is an evolved product, resulting both from the cloud-based re-architecture of Nokia’s Open TAS combined with the integration of assets from the former Alcatel-Lucent Rapport Converged Telephony Server. Unlike the original Nokia Open TAS, which was specifically designed and targeted around the requirements of the VoLTE market, the new Nokia TAS is a fully converged fixed/mobile/enterprise offering. Like both its predecessors, it has been purpose-built for IMS, supporting a leading level of 3GPP compliance and offers per subscriber application server registration and service chaining. The Nokia TAS is also differentiated by supporting both a strong API exposure repertoire together with a built-in Java Execution Environment and a Service Creation and Testing Environment (SCTE) for operator service creation and customization. This combination goes further than most compared vendors in enabling services to be customized both by the operator’s internal and external developer partners. The cloud-based design architecture of the Nokia TAS has been instrumental in helping maintain service parity for customers migrating from Nokia’s predecessor application server products, and in supporting a high level of portability between hardware platforms without impacting availability. By virtue of its pedigree, the new Nokia TAS enjoys wide carrier appeal and strong traction with verified, very high capacity VoLTE deployments and a combined inherited installed base representing a balanced mix of mobile and fixed network customers. The new Nokia TAS is not generally available to the market until early 2017. However, the company has been running pilot projects during 2016 with existing major customers to validate the new product before commercial availability. Once it becomes commercially available, the new Nokia TAS will face its greatest challenges in the burgeoning and lucrative enterprise communications services market. While incorporating the best of enterprise services support from the former Alcatel-Lucent Rapport CTS, BroadSoft continues to enrich its leading business offering and Huawei has now come to market with cloud-based B2B and enhanced B2B2C offerings. Unlike many others, Nokia does not have its own in-house complementary client software portfolio and relies on partner pre-integrations. Notwithstanding some concerns, Nokia is now well positioned to offer both new and existing customers a very flexible all-round offering, deployable in standalone or combined application server configurations.

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Product Assessment - Hosted Multimedia Application Servers JJ Strengths and Weaknesses

Strengths

Weaknesses • The Nokia TAS is the latest publicly announced • The new Nokia TAS is not yet commercially application server, evolving from the convergence available, although it is in major trials. The of the Nokia Open TAS and the acquired company reports that the original Nokia cloudAlcatel- Lucent Rapport CTS. As such, the based design was started early in 2015 into which combination selects the best functionality from the Alcatel-Lucent CTS components have been each product, with Nokia contributing strongly easily integrated. The success of pilot projects in mobile applications and Alcatel-Lucent in fixed running with major existing customers of both (residential) and enterprise (business) applications. Nokia and the former Alcatel-Lucent to validate With components which can be deployed in service parity is being used as a general availability standalone or combined configurations, the new decision gate and is targeted for early 2017. Nokia TAS offers fully featured application server • The new Nokia TAS faces increasingly strong functionality in a packaged offering, capable of competition in the business application server servicing all carrier type application requirements. market. Despite inheriting very strong enterprise • The Nokia TAS, like its predecessors, is purposeservices support from the former Alcatel-Lucent built for IMS networks, maintaining its 3GPP CTS application server, it does not match the standards conformance to a leading level. Unlike depth of the business application market leader, rivals, it enables separate IMS application server BroadSoft, and is now being challenged by a registration for optimal and flexible application renewed enterprise offering from Huawei’s new server service chaining on a per subscriber Cloud Enterprise Communications B2B solution. basis. The Nokia TAS cloud-based application As the enterprise segment offers better returns server design architecture has also facilitated than the consumer segment, carriers focusing the integration of its predecessor products’ solely on the enterprise opportunity may favor functionality and is helping maintain service alternative offerings. parity for legacy product customers during • The Nokia TAS product portfolio does not migration. include in-house complementary client software. • Nokia has equipped the TAS with fully featured While the company works with multiple mobile value-added application development capabilities. terminal and chipset vendors and has a client TAS supports a full portfolio of REST-based software web portal test facility, it has no incommunications APIs to embed “comms” into house equivalent of, for example, BroadSoft’s specialized apps targeted at vertical markets, BroadTouch, GENBAND’s GenCom or and also supports a built-in Java Execution Metaswitch’s Accession clients. Operators looking Environment and a Service Creation and Testing for a complete turnkey end user deployment Environment (SCTE) offering. Providing carriers experience may find that additional client software with multiple service creation and customization selection is required if not a pre-integrated Nokia capabilities helps add value to what would client software partner. otherwise be “vanilla” service offerings, enabling new revenue opportunities to be addressed.

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Product Assessment - Hosted Multimedia Application Servers

• The Nokia TAS offers a high degree of software • While Orange has differentiated itself by portability without impacting five nines providing professional advisory and integration availability. It supports both bare metal and cloudservices for IoT, all other Tier 1 operators are also based solutions using Openstack and VMware, looking for differentiation beyond connectivity. while maintaining a high level of resilience, They are taking on a strategic role in IoT to employing N+K redundancy and shared data layer increase revenues as well as service stickiness. call state replication. Deploying the virtualized Most, like Orange, are allying with application Nokia TAS on standard data center servers shared enablement platform providers and investing with other applications provides operators with in vertical expertise and partnerships to allow significant cost and operational advantages. them to play beyond pure connectivity and service enablement with bundles and end-to-end • Building on the footprint of its antecedents, the solutions. new Nokia TAS inherits wide carrier appeal and strong traction, especially in VoLTE. It has over 100 operator contracts, has sold more than 430 million software licenses, and supports a network with 100 million subscriber licenses deployed – the largest network by far among vendors in this comparison. With this inherited installed base representing a balanced mix of mobile and fixed network customers, Nokia is well positioned to offer both new and existing customers a strong offering for converged network operation.

Metrics JJ APPLICATIONS

Business Fixed Applications

Nokia TAS provides the Telephony Application function that supports advanced business communications such as IP Voice VPN, IP Centrex and Business trunking services. The Business telephony features include: VPN features:(VPN dialing and display On-net and off-net calls, Account code, Authorization code, Closed User Group, Least-cost routing, On-line charging (session and event based), Telephony Group features: (Call pick-up, Distinctive ringing, Multiline Hunt group, Call park, Barge-in), Boss/Secretary Call Coverage (Busy Lamp Field, Intercom), Web portal services (End-user self-care, including Numbering Plan Setup, PBX Connection, IP Trunking, transit scenarios to support SIP or TDM trunking, ETSI ISDN PRA)

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Product Assessment - Hosted Multimedia Application Servers

CRM Support

Business Mobility Applications

Unified Communications & Collaboration Applications

Residential Applications

Nokia TAS Call center functions through a native multi-line hunt group capability that provides the following features: call queuing, call distribution. Native auto-attendant and attendant console provide welcome services, call monitoring and management. Shared Call Appearances for group coverage. RESTful Call Management APIs are also available for integration with 3rd party call center services and CRM systems. Apizee and Phonedeck are two examples of Comms applications embedded into CRM business process. In addition, the Nokia TAS can be integrated 3rd parties apps such as the Aricent Flexible Routing & Charging/Smart Wizard routing for IP800 toll-free service and the Genesys Contact Center solution for advanced call center service. Call Center can also be a separate application which can be connected to IMS with standard ISCinterface. Nokia TAS has inbuilt Private Dialing Plans plus extended VPN Dialing features which provides enterprise users (PBX, network hosted, and PSTN/ PLMN roaming) on-net/off-net calling virtually anywhere. With leastcost routing extension, users within the same VPN plan can take advantage of special tariff arrangements for calls between locations. Geo-location based features provide dynamic and efficient call routing based on device location information. Additionally Nokia TAS provides interface to 3rd party SCPs where VPN-application can be located. For this CAMEL 4, INAP, SINAP and Nokia INAP protocols are supported.Further possibility is to use Nokia TAS integrated Call Management APIs which have been integrated by Phonedeck partner to provide enhanced business mobility applications, such as integration of mobile communications with Salesforce.com.Nokia TAS provides mobility for VoIP users over any broadband connection and voice, video and messaging services do not depend on location of subscriber. Nokia TAS provides both onboard capabilities for unified communications as well as the interfaces to expand UC features by providing the flexibility for an enterprise to build the communication environment to suit its needs: TAS support presence, address book, personal ring back tone, unified messaging, contact center, conference and collaboration services, Web2.0 GUI and Self-Care APIs for end user, and legacy PSTN/PLMN interworking. Integral capability for ad-hoc voice conferencing as part of IR.94 standard. Additionally, new Video Conferencing & Collaboration Services developed by Counterpath leveraging Rapport Communications APIs will be available on a per customer demand basis. Nokia TAS supports Voice and Video services in VoLTE and VoWiFi architectures and VoIP with PSTN emulation and Simulation services, as well as PacketCable 1.5 and 2.0 services. These can be deployed in a single node (VoIP&VoLTE/ VoWiFi) or separate Application Servers (VoIP and VoLTE/VoWiFi) depending on operator network configuration.

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Product Assessment - Hosted Multimedia Application Servers

Enhanced Residential Nokia TAS supports a large set of enhanced CVoIP features including: User Applications Controlled Call Barring, Features scheduling (ToD/DoW) based on user’s profile, Priority line, Multiparty calls, Push to Conference, Advanced Voice Mail (VM) related features: VM originated calls, IR.92, Message Waiting Indication (MWI) (Listen to VM and rescue, Video Mail Access (store and play)), IVR features (Basic Auto- Attendant, Subscriber Controlled Language), One-number/Multi-devices related features (Simring & sequential ringing, End-point validation at settings, End-point answer confirmation (anti VM), Transfer back to Simring group). Full featured enduser self-care manager and APIs are available in order to provide self-care funtionality either directly via the offthe- shelf GUI or by embedding the functionality in the Operator’s portal. These enable end users to manage service such as barrings and forwarding options including advanced time- and identitybased service criteria (whitelisting / black-listing). Nokia TAS Call Management APIs have been integrated by Privacy star to provide enhanced residential applications, such as nuisance call blocker. Furthermore Nokia TAS supports flexible number portability services (ported-in, portedout) with MAP/SINAP/ NINAP/CAMEL based portability enquiry from external database. Consumer Mobility Nokia TAS provides 3GPP compliant VoLTE including IR92, IR94 Applications supplementary services and other supplementary services. Its Service Continuity function also provides SCCAS anchoring, domain selection, and handover capability enabling common voice and video services across mobile VoIP/VoLTE and circuit switched 2G/3G mobile network. Enhancements include eSR-VCC, service data consistency between HLR/IMS and IMS Centralized Services (I2) interface. Nokia TAS also supports voice over Wi-Fi (VoWi-Fi) as well as Video over Wifi enabling VoLTE service continuity on Wifi network, i.e. call handover between Wi-Fi and 3GPP (3G, 4G LTE) in either direction. It also enables VoLTE service consistency by providing Wi-Fi secured access to IMS centralized services. The solution is deployed in Verizon as the “Advanced calling 1.0” service. With its Call Management APIs, Nokia TAS enables more services beyond VoLTE and VoWi-Fi: China Telecom for example wholesale a new 3rd party app called “disposable virtual number”. Feature Packages The CVoIP package provides the consumer/residential bundle. The VoLTE provides the consumer mobile bundle. The XLE package provides the enterprise bundle. Both can be combined to deploy converged solutions. Features are; voice, video, messaging, handovers and MultiDevice. Also many charging alternatives exists (post-paid, pre-paid, flat fee/usage based). TAS APIs allow the integration of specific applications for specific verticals needs.

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Product Assessment - Hosted Multimedia Application Servers

Client Strategy

Client Features Protocol Support

Web RTC Support API Support

Softphones and mobile device soft clients are supported via SIP and WebRTC interface. Nokia TAS supports multiple devices sharing a single PUID allowing to support multi-screen ringing capabilities(simultaneous, sequential etc.). Calls can be pulled/pushed between different devices with VoLTE/Wi-Fi/2G/3G technology. Answer Confirmation and other enhancements provide improved user experience. This feature is extended to support subscribers in both IMS and PSTN/PLMN domains. With the Call Management APIs, the call can also now be piloted by a 3rd party application enabling incoming calls to ring based on the application’s use case or enhanced service logic (e.g. internet session based ringing). TAS leverages new innovations in browser technology (WebRTC) to deliver a “virtual appliance model”. Nokia TAS supports client invoked and controlled handover and call delivery options like Multidevice, Flexible Alerting, SRVCC. Industry standards including IMS 3GPP, IETF, GSMA, PacketCable and others. Integration with IMS network elements is done through SIP-ISC (S-CSCF), Cr (MRF), Sh (HSS), Ro, Rf, CAP/INAP (Charging), SNMP, XCAP,FTP, XML (O&M) etc. Integration with mobile network is done through CAMEL, ISUP,ANSI-41/MAP etc. Integration with voice mail is done through MWI IR.92. Integration with web services and 3rd party applications in done through OMA RESTful Network APIs, HTTP/S, SOAP. Integration with client devices is done through SIP (for session handling) and Ut (for self care from the subscriber’s client device). The Nokia TAS product suppports a rich set of interface technologies to access subscriber repositories - for example: - sh/Diameter, MAP (advanced HLR data retrieval), LDAP. Additionally the Nokia TAS supports stateless operations. The WebRTC client can access the full set of TAS capabilities. TAS is enhanced to expose REST APIs based on GSMA OneAPI definitions and/ or selected 3rd party APIs. As part of the TAS Service Innovation solution, the communications APIs enable customers to accelerate the creation of 3rd party web services and embed communication services in more places enabling contextual communications into any web, smartphone or vertical application. The TAS Call Management APIs allow service providers and developers the flexibility to integrate unlimited innovative features. These APIs tap into TAS capabilities such as high definition voice and video, call control, conferencing, and interactive voice for consumer market as well as vertical markets such as banking, healthcare, security, transportation, education, hotel trade. TAS APIs are REST based and OMA Network API specification compliant. Native TAS APIs include: Call Control API (including Conferencing APIs), Call Direction API , Call Notification API , User Interaction API (including Recording APIs), Self Care API (including configuration of advanced services such as auto attendant, and time of day controls and profiles), Call History API, and Terminal Status API. The future product release includes new set of enhanced APIs like call recording API, Multi-parties conference API, Switchboard API, CallerId unmask API, Originating call API, Route2VoiceMail API, Flexible CallerId API, Call Transfer API, Subscriptions bulk API, Subscriptions audit API etc. The Communications APIs offers APIs from other IMS Network Elements such as Social Messaging Application Servers (Presence Server and Multi- Media Instant Messaging Server) as well as Session Border Controller for WebRTC APIs.

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Product Assessment - Hosted Multimedia Application Servers

JJ IMS SUPPORT

IMS Architecture

3GPP Release Support IMS-enabled Communications Services Application Programming Support

Nokia TAS is a multifunction IMS Application Server for IMS networks, with cloud optimized architecture. Nokia TAS allows separate registration for its supported AS roles allowing optimal and flexible service chaining on subscriber basis. Nokia TAS components can be deployed in standalone or combined setup. 3GPP Rel-11/12 and some future functions like EVS is based on Rel-13. Full support to IR.92/94 MMTEL standards and VoWiFi, including multidevice, Consumer VoIP and Enterprise VoIP services

A Java Execution Environment is integrated in Nokia TAS to enable application enhancements with Java based service logic components. It is done within an integration framework with lightweight service definition possibilities, with readymade EIP modules, and with a tremendous amount of components that can be used as protocol (HTTP, JMS, database, TCP, FTP, etc.) plug-in modules for any service components Service Creation & Service Creation & Testing Environment (OpenTAS service execution Testing Environment environment) under evaluation. Service creation is available for operators through GSM ONE API based Open API interface. IMS Centralized Both I2 and Camel homing based ICS architectures including interworking with Services eSRVCC (ATCF/ATGW) are supported from MMTel AS and SCC-AS roles perspective. Also Emergency Access Transfer Function (EATF) is supported as imbuilt functionality with Nokia TAS. AGCF/ATGW functions for eSRVCC are built in Nokia CFX-5000 and SBC products. PGM/RCS/RCSe Nokia TAS is pre-integrated with the Nokia Social Messaging product that support support full capabilities for Presence, Group and Data management. Nokia have as well full support of RCS/RCSe services in case deployed via external RCS/RCSe server such as Infinite Convergence. Nokia TAS can be used simultaneously for VoLTE/ VoWiFi services and also as VoIP &Video Share server for RCS subscribers on non LTE accesses. IP-SM-GW support Different alternatives exist: In-built IPSM- GW, integration with the Nokia Social Messaging product that offer the IP-SM-GW capability capabilities or alternatively capability to use external IP-SM-GW. IM-SSF Support Nokia TAS has in-built IM-SSF with wide support for interfacing existing SCPs (Camel4, INAP, SINAP, Nokia INAP). Another architecture consists in directly trigger IN services through Nokia TAS Call Management APIs. Alternatively Nokia TAS can be integrated with external IM-SSF.

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Product Assessment - Hosted Multimedia Application Servers

MRFC Support

Nokia TAS has two architecture approaches to trigger Media Resource Services such as tones, announcements and conference mixing: ability to trigger standalone MRF with MRFC/MRFP with MSML/MSCML/NetANN etc protocol or with in-built MRFC to trigger standalone MRFP with H.248 protocol. For standalone MRF scenarios, Nokia TAS is pre-integrated with Nokia 5900 MRF but also supports Mr’ based connectivity with external MRF such as Radisys MS and Dialog MRF. Nokia Open MGW can be used as standlone MRFP.

JJ PLATFORM & PERFORMANCE

Product Design

Nokia TAS is a containerized solution and is available on bare metal and cloud based solutions with open interfaces towards cloud infrastructure. Preintegration available with Openstack and VMware. Server Brand/Type Nokia TAS is HW agnostic. Different options such as HP C7000 Gen 9 and Airframe are supported for the HW offers. Operating System Linux RedHat Scalability The target capacity is 5M subscribers for a single TAS Instance. This is defined as a single Call server node equivalent to a cluster of virtual machines (VMs) managed by an administrative VM in the cloud environment. In the physical hardware configuration, a single call server node is a single chassis in a cabinet. Cloud deployments can scale larger dependent on the deployment parameters. Calls per Second A single TAS Instance is targeted to handle at least 5M BHCA. Simultaneous Calls A single TAS Instance is able to handle at least 200,000 simultaneous calls. Support for shared Nokia TAS is a containerized solution and is available on bare metal and hosted / cloud cloud based solutions with open interfaces towards cloud infrastructure, VNF deployment Management and Element Management Systems. Preintegration available with Openstack and VMware. Nokia TAS can be delivered with software only model and with e2e Nokia cloud solution. Nokia TAS can be deployed on standard data center servers which are shared across multiple other applications. Vendorhosted Nokia has e2e cloud base solutions using open interfaces towards addtional enterprise services enterprise services. Integrations available in commerical level for example with cloud platform Agnity, Radisys and Dialog. Geographic IMS signalling is based on IP technology there is no distance limitation if Redundancy the network is designed within the transaction timeouts (latency). Dynamic assignment enables subscribers to be dynamically assigned to any available TAS in the network, providing both geographic redundancy for a site failure and automated load balancing under normal network operation greatly reducing maintenance expense. Software Nokia TAS supports both local N+K and additional geographic redundancy. Redundancy Check-pointing and seamless switch over without loss of stable calls is supported. Availability exceeds 99.999% (both measured and modeled). Call State Replication Call data is maintained across local and geographic failures based on dataless processing and replicated databases in a shared data layer

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Product Assessment - Hosted Multimedia Application Servers

JJ INTEROPERABILITY

CSCF HSS HLR IN/SCP Device Interoperability

Deployments with Huawei (Italy, Turkey, Greece, Romania, China), ZTE (China), Ericsson (Slovakia, Hungary, Croatia, Macedonia, Portugal, USA) Deployments with Ericsson (France, China, Slovakia, Hungary, Romania, Macedonia), Huawei (China), ZTE (Romania, Poland), Mavenir (Croatia). Nokia TAS has standard MAP interface and IOTs with several HLR vendors. Commercial deployment with 5 different HLR vendors. Wide set of IN-interfaces and IOTs and commercial deployments with several IN/ SCP vendors using Camel4, INAP, SINAP, INAP protocols. Nokia TAS is in extensive use in numerous live networks in which operators have run device certification tests together with device OEM’s. They include a wide variety of devices from Samsung, Apple, LG, Sony, and HTC. Nokia has direct relationship with key device manufacturers and chipset vendors to secure smooth interworking. Interoperability has been secured with downlodabale client vendors including Optimobile and WebRTC client vendors like TechMahindra and Quobis. Nokia provides interoperability testing in Dallas labs as a service for operators.

JJ DEPLOYABILITY

Product First Available Licenses Sold

2006 The total number of sold TAS licenses sold is 430+ million, including 198 million VNF licenses for the Cloud. As above.

IMS AS Licenses Installed Base IMS AS Deployments IMS AS commercial contracts are 66 for TAS for VoLTE/VoWIFI and 42 for fixed/cable/convegrence. In total Nokia has 71 commercial VoLTE contracts including 26 in live use. Largest deployment The largest deployment is 100M licenses for a TAS solution. Key Customers Nokia has 71 VoLTE and VoWiFi rerefences including live commercial networks like AT&T, Verizon Wireless US, Reliance Jio India, China Mobile. Major Indian operators like Vodafone India, Bharti are deploing Nokia’s VoLTE solution. Key customers include 8 Orange affiliates in Europe, 9 TMobile affiliates in Europe, 5 Vodafone affiliates. Overall Nokia has 26 live VoLTE references. Availability as a VNF The first commercial TAS VNF was deployed mid 2015. with NFV MANO support Resellers and Partners Nokia has direct sales channel to operators. Fixed / Mobile / VoLTE and increasing interest in VoWiFi are the main drivers for Nokia IMS Cable Breakout and Open TAS deployments. VoWiFi customers are seen as mobile customers. Operators’ fixed and cable operations are supported with Nokia TAS. Approximate ratio 60% mobile, 40% fixed/cable/convergence

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