Technology White Paper
|
|
- Randolph May
- 8 years ago
- Views:
Transcription
1 Technology White Paper Evolution of Media Servers for IMS/NGN Services Media Servers (MS) will play a key role in future IMS/NGN networks. More advanced services require more and more complete interaction with the user. Consequently, the Media Servers or Media Resource Platforms that are deployed in today s networks need to be enhanced. IMS, first designed for mobile networks, is now being promoted as a converged solution for both fixed and mobile networks. IMS-compliant Media Servers as defined by IMS standards, aim to provide a decoupled and flexible architecture, thanks to an optional split of the Media Resource Function Control (MRFC) and the Media Resource Function Processor (MRFP). The objective of IMS-compliant media resource functions is to allow media resources to be shared among various applications to facilitate the rapid creation of services. This paper focuses on the evolution of Media Servers. These have moved from stand-alone devices catering to dedicated applications towards flexible devices capable of voice/video/web services integrated with multimedia end devices. Furthermore, Media Servers are poised to play a significant role in triple-play services. They will serve requests from consumer s settop boxes and mobile multimedia terminals/browsers for additional video play-out and streaming. The paper also looks at some advanced aspects of managed customer interaction and the applications of Media Servers in mobile networks. The required protocols and extensions to existing protocols to achieve such advanced services are addressed, too. The paper concludes with a summary of the positioning of Alcatel s offering, including the Alcatel 8688 MRF and 8788 MRP.
2 Introduction Applications and Media Servers IP Multimedia Subsystems and Media Servers Charging Efficient utilization of Media Servers Alcatel s Media Resource Processing Products Alcatel solutions Conclusion Abbreviations References Acknowledgement Biography ALCATEL
3 Introduction Traditional service providers are moving away from Time Division Multiplex (TDM)-based circuit switched networks and transitioning towards packet-based networks for scalability, efficiency, and flexibility. Service providers have relied upon TDM technologies with SS7 signaling to provide Intelligent Network (IN) services such as prepaid calling, network announcements, and other services. All these services require some form of media such as announcements, updates to customer accounts, etc. that need to be served/played to the end users. Computer-Telephony Integration (CTI) has introduced a new set of services that can address a wide range of markets/applications. Next-generation services are rapidly evolving supporting voice, video, and data multi-media servicebearing capability with Quality of service (QoS) assurances. A Media Server (MS) is a network entity that may be shared across several applications and provides common media resources such as Text-To-Speech (TTS), Automatic Speech recognition, Video Conferencing, etc. A Next Generation Network (NGN) [1] is defined as a packet network in which transport elements such as switches and routers are logically/physically separated from the service/session control plane supporting multimedia services. The prime characteristics of NGN services are: a) ubiquitous, real-time, multi-media communications, b) more personal intelligence distributed throughout the network, c) more simplicity for users and personal service customization and management. As a result, the NGN enabling such advanced services will have more distributed intelligence among the network elements. So the NGNs, due to their flexibility and an opportunity to rapidly develop new applications/services, are the key enablers for the service providers to attract and/or retain the most lucrative customers for revenue generation. The NGNs are rapidly converging over packet-based IP networks, resulting in more efficiency and flexibility in sharing network resources. and H.323 are the emerging and dominant protocols for signaling and call control. The telecommunications industry is rapidly moving towards voice and video over IP technologies. As a result, the Media Servers that incorporate such flexible protocols can also be the core of broadcast for commercial insertion, program playback, and any combination of recent applications. So media server applications are continuously expanding beyond traditional just limited to IN applications such as Prompt and Collect, Interactive, Voice Response (IVR) or simple announcements. The IP Multimedia Sub-System (IMS) of the 3GPP provides a framework for enhanced and distributed service delivery over IP, independent of access technologies. The IMS acts as a platform for delivering any conceivable multimedia service and provides a generic architecture, which contains several common elements that can be shared among several applications. As a result, applications can be efficiently developed and rapidly delivered to the end users by sharing the common elements/features such as user-profiles, billing, security, etc. IMS-compliant Media Servers will comprise the Media Resource Function Control (MRFC) and Media Resource Function Processor (MRFP) that provide a decoupled and flexible architecture. They can also serve requests from consumer s IPTV set-top boxes and mobile multimedia terminals/browsers for additional video play-out and streaming. As a result, the Media Servers are poised to play a significant role in triple-play services architecture (TPSA). This paper gives details of a number of key aspects in the evolution of Media Servers and what they can do in the context of IMS/NGN services. Emerging protocols and standards that fuel that evolution are discussed briefly, along with their impact on media server architecture. Applications and Media Servers Today s service providers are striving for differentiators in a highly competitive market by providing new services Figure 1: Applications and their media needs DTMF Detection and Generation Annoucement Audio/Video Audio/Video one/playback Bridging Transcoding Play/ Record Automatic speech recognition Music on Hold Text to Speech Annoucement Server Contact Center Calling Card & Prepaid Enterprise collaboration application IP-Centrex Audio & Video Conferencing Interactive Voice Response apps Directory services Location based services Voice mail and Unified messaging Network hosted Games Intelligent call routing Voice Portal Voice activated calling Call Parking & Forward 1 ALCATEL
4 reducing operational costs. To help achieve those goals, traditional telecommunications service providers are moving away from Time Division Multiplex (TDM)-based circuit switched networks and transitioning towards packet-based networks for scalability, efficiency, and flexibility. This transition will help enable advanced services that merge voice, video, and data. With the advent of IN applications, it has become imperative to have dedicated media serving network elements for applications such as announcements or Interactive Voice Response systems. So voice can be considered as the primary medium for early Media Servers. Figure 1 depicts major current applications in the telecommunications services that utilize some form of media serving capability. In most of the applications shown in the table, announcements are played as deemed necessary at any point from session initiation to its closure. For example, in a contact center, the enduser may be transferred to another agent in mid-call with greetings or music playing during the transfer. In all such services, a Media Server is required, streaming media in the form of audio or video depending on the receiving terminal capabilities. Converting text to audio on-the-fly for playback to callers is known as Text-To-Speech (TTS). It is also a key feature of current Media Servers. Web technologies based on HTTP and XML have enabled the delivery of hypermedia. XML-based extensions such as VoiceXML (vxml) [2] and CCXML [3] have become industry standards for specifying telephony control, conference control, and voice user interfaces. Fundamentally, a voice browser fetches the required VXML page for interpretation from a Web Application Server (W) as depicted in Figure 3 and can prompt the Media Server to stream audio to the end user. Another important feature that a Media Server can provide is bridging. With bridging, several audio and video sessions can be mixed appropriately such that video/audio conferencing is enabled for the end-users. Figure 2: Voice browser for applications Telephone Carrier Voice XML Interpreter Figure 3: Application of Media Servers in video Setop box (RTP mixer) HTTP Consumer answers Corporation Triple-play services have now become a common offering from several service providers. As a result, streaming video clips for either self-service (or automated call-attendant) branding or interactive TV have become a reality. Figure 3 depicts one such application, where the end users can interact with TV; this serves as an illustration of beyond simple audio streaming applications. In other words, the scope of Media Servers is not limited to traditional applications such as Prompt and collect, Interactive Voice Response (IVR), or simple announcements. Click on remote: Call our operators now 1 st leg of the audio call Media Servers play a crucial role in developing such NGN services. Figure 4 depicts an NGN with generic Application Servers and their corresponding Media Servers. The firstgeneration IP Media Servers are directly incorporated into the Application Servers (), leading to a tightly coupled Media Server with the. This approach is effective for porting legacy applications to IP environments quickly. However, the tight coupling of MSs with s leads to reduced flexibility in sharing media resources across the service control plane. As a result, next generation architectures have predominantly separated the IP Media Server from the application. The initial trend has been to develop HTTPbased markup language control, such as Call Control XML (CCXML), and Voice- XML. This decoupling requires some signaling for interaction between s and Media Servers and is discussed later. Consumer or Corporate Web site Media Enter your phone number Includes information on page viewed Network Call routing and Find available agent Ring agent desktop, with CTI Thanks for calling. Can I answer any questions about the mobile phone you re interested in? IP Multimedia Subsystems and Media Servers The IMS architecture of 3GPP [4] provides a robust and flexible way of providing services over an IP (packet) network. The key value of the IMS ALCATEL 2
5 Figure 4: Transition towards flexible/decoupled IP Media Servers from Application Servers the MRFC and the MRFP. In addition, MRFC is also responsible for sending accounting information to charging/billing elements. Application Server Application Server The MRFP provides resources as instructed by the MRFC, and its major functions are Native VoIP Application IP Media Server Voice XML & CCXML IP Media Server Control Protocol IP Media Server a) serving media streams for announcements, etc., b) mixing of incoming media streams, c) media stream processing such as transcoding. PSTN Gateway Border Controller Packet Network In all cases of Application Server control, all session control requests passed between the Application Server and the MRFC are sent via the S-CSCF using the ISC interface and the interface of the Mr reference point. MRFC addresses are made known via peer-to-peer arrangements within the IM CN subsystem. IMS Release 6 does not explicitly specify the interface between and MRFC; however, most implementations have a (dotted line) interface between MRFC and. PSTN VoIP Figure 5: Layered IMS architecture Application Layer Session Control Layer Connectivity Layer HSS Diameter CSCF IP Network MGW MRF PSTN/PLMN Even though H.248 has been recommended as the protocol at the Mp interface between MRFC and MRFP, this has not yet been widely adopted by the industry. protocol extensions that give the applications fine-grained control of the media and call control services are currently under development. These help establish connections and interface specifications implemented by XML. But unlike VoiceXML and CCXML, there is as yet no widespread industry acceptance of a standard/universal media control protocol. has gained ground in the industry and has MGCF been recently catching up with its predecessor, H.323 and its variants. H.248 Basic network media services can be provided through the Netann scheme as outlined in : basic announcements, IVR, and limited bridging [5]. For more advanced features and mid-call trigger control, architecture stems from the fact that different applications/services can share a common set of elements such as user-profiles, authentication/authorization, billing, and media resources across elements, as shown in Figure 5. This is in contrast to the current (legacy) architectures, where the applications are built in a monolithic fashion and the abovementioned common elements are implemented separately for each application, leading to inefficient resource utilization. Figure 6: Simplified view of the MRF in the IMS network and the relevant interfaces ISC As per 3GPP IMS Release 6, Figure 6 below shows the interfaces of MRF, where the MRF can be split into a Media Resource Function Controller (MRFC) and a Media Resource Function Processor (MRFP). The MRFC supports services such as conferencing, announcements, or bearer transcoding. Ideally, as per IMS, the MRFC will process the messages received via S-CSCF and uses Media gateway Control Protocol (H.248 MEGACO) instructions to control the MRFP. However, efforts are under way to promote a /XML-based protocol between S-CSCF Mr MRFC MRFP Mp 3 ALCATEL
6 work is under progress on XML/-based protocols to provide a mechanism to control sessions in a Media Server and the associated objects (e.g., audio clips). Such a control description can be carried over INFO messages similar to VXML but with additional features. For Video, Real Time streaming Protocol (RTSP) has been the de-facto IP-based stream/media controller. For further information, the reader is referred to the working groups of the IETF. Charging The IMS architecture supports both offline and online charging systems. Offline charging invokes the collection of call data records (CDRs) at the Charging Collector Function (CCF) after the session is torn down. On the other hand, online charging stipulates that the Application Server contact the online charging function and, based on the policies established, the session/call is allowed to proceed to access the resources. The ECF in turn can select either a) immediate event charging or b) event charging with unit reservation, depending on the type of resource and policies in place. In the former case, the ECF deducts the appropriate credit from the user s account and grants the requesting ACRs from MRF/. In the latter case, the ECF sends back the allowed time or data volume that can be served to the requesting end user and updates the credit available to the user. This model is suited to a dynamic session where the amount of resources cannot be pre-determined. An IMScomplaint MS should be able to execute the above functionalities. Figure 8: Online charging Figure 7: Billing and off-line charging interaction in the IMS Billing System MRFC CDRs Billing System MRFC CCF RF CDRs S-CSCF CCF RF ACRs S-CSCF ACRs Figure 7 below depicts the interaction of various elements with the CCF. As a result, the MRF interacts with the CCF for any charging events that may have to be passed on to the CCF. As the IMS session traverses and utilizes resources such as media resources, the pertinent elements will generate appropriate Accounting Requests (ACRs) using Diameter. These ACRs will be appropriately processed by the CCF, thereby generating Call Data Records (CDRs) for the billing system. It should be noted that ACRs can be of two types depending on whether they are IMS-session related or IMS-event related. The former relates to the session depending on the point of ACR generation during the session (start, during, stop). Non-session related ACRs are called events, and they trigger the CCF to generate corresponding CDRs. On the other hand, session ACRs cause the CCF to update corresponding CDRs. The MRFC sends session ACRs. Online charging, on the other hand requires a different approach. Figure 8 shows the IMS online charging elements. Note that only the elements that are relevant to this paper are depicted. When a UE requests something (resources), the /MRFC contacts the Event Charging Function (ECF) through the Ro interface before delivering the service to the user. Efficient utilization of Media Servers provides the versatility to allow distributed application server components to deliver advanced intelligent services to remote clients. As a result, several key benefits such as increased scalability, fault tolerance, and load balancing capabilities can be obtained. However, control of distributed media resources remains an open issue. Most often media resource control is dictated by the inherent characteristics of a network deployment and/or the specific media needs of an application. To gain efficiency and enhance utilization of media resources, dynamic policies have to be deployed. These policies can be determined by: a) network load conditions, b) user subscription profiles including QoS, and c) service provider policies. A fundamental requirement for increasing efficiency and sharing media resources is that both the and the MRFC keep track of the usage of media resources, including capacity and capabilities. Current Media Servers lack support of such capabilities, even though and CSCF entities do implement some form of Service Capability Interaction Management (SCIM). The ability to trigger services is a key feature of an IMS network. There are three potential trigger handling areas: user preferences, network policy/preference, and service orchestration. Of these, user preferences are well defined in IMS as the ALCATEL 4
7 ability to base a service selection on preferences indicated in the Initial Filter Criteria (IFC). For example, a INVITE may be directed to an application server () that provides class features for that user. Network policies and service capabilities have not been well defined in IMS, and both have been referred to loosely as SCIM. Network policies allow the operator to express a routing preference to a server based on events or states in the network (e.g., server outage or the user s location in the network). This is different from service orchestration, which is a component specialized in invoking services and handling the events and data flow between them. Incorporation of SCIM in the and CSCF will allow efficient utilization of media resources. Alcatel s Media Resource Processing Products Alcatel solutions Alcatel s 8686 Specialized Resource Point (SRP), dedicated to TDM environments and extensively used in intelligent networks, has evolved into Alcatel 8688 Media Resource Function, which is positioned as a Media Server for NGN and IMS services. It has a large number of flexible features that make it a versatile Media Server providing voice and video processing. It supports call acceptance and processing via standard IP signaling () and uses RTP media processing. Media services include voice prompts, menus, and data (DTMF or speech) collection (prompt & collect), halfduplex speech recording, and the ability to bridge or unbridge calls during transfer. It is integrated in numerous Alcatel services. The Alcatel 8788 Media Resource Platform is particularly suitable for the applications involving contact centers and answering corporate market needs. The most important functions of the MRP are those that permit operation of the platform in a multi-tenant environment: a) policy management for port allocation and resource allocation on a per tenant basis, b) tenant-based real-time and historical reporting. This capability is a key benefit for service providers, allowing them to easily partition a customer s application and act as a hosted application service that generates multiple revenue streams. Enhanced call-routing that involves call qualification, call queuing, and call transfer provides the MRP 8788 (that subsumes the MRF 8688) with the capability to offer service providers for the corporate market a unique opportunity to create several applications that are variations of contact centers and a powerful mechanism for revenue generation Conclusion The convergence towards a packet-based IMS architecture enables service providers to share and efficiently utilize media resources. Common network elements handling various applications can leverage on the shareability and scalability properties of IMS architecture. Various functions and features that are needed for achieving such flexibility and IMS-compliance for Media Servers are described in this paper. The IMS-complaint Media Servers can be efficiently shared across the applications and therefore help increase revenue across NGNs, mainly stemming from the sharing of common elements and applications. With a full range of Media Servers, including the 8688 MRF and the 8788 MRP, Alcatel covers the needs of NGN and IMS networks for fixed and mobile operators. It also offers a comprehensive migration strategy from today s circuit-switched to tomorrow s packet-switched networks and complements yesterday s voice processing by video to provide state-of-theart voice and video processing. Glossary of terms and abbreviations: Session Initiation Protocol RTP Real-time Transport Protocol VXML Voice Extended Meta Language MRF Media Resource Function MRFC Media Resource Function Controller MRFP Media Resource Function Processor CSCF Call Session Control Function CDR Call Data Records MRP Media Resource Platform TDM Time Division Multiplexing Application Server IN Intelligent Networks CCXML Call Control XML MS Media Server SCIM Service Control Interaction Management References [1] Study group 13. [2] [3] [4] IP Multimedia Subsystems, 3GPP TS , 3GPP [5] E. Burger et. al., Basic Network Media Services, draftburger-sipping-netann-11.txt, work in Progress, IETF. Acknowledgement The authors are thankful to Robert Hemmerich for his valuable contribution. 5 ALCATEL
8 Girish Chiruvolu is a product line manager for Alcatel, North America (NA) for the MRP 8788 Media Servers in Voice over IP solutions. In the recent past, he was a research scientist at Alcatel CTO, NA and has worked on several projects involving IP, Ethernet, traffic modeling, QoS, and Multimedia applications. He holds a Ph.D. in Computer Science. A product line manager for IMS-based products and solutions for Alcatel FSD, NA, John Kaippallimalil has extensive expertise in software engineering, network architecture, and standardization of next-generation communications networks. Jacek Jedruszek has been working for Alcatel since After participating in the development of a variety of software projects, he joined product management in 2000 with responsibility for the Media Resource Function and Specialized Resource Point (SRP). ALCATEL 6
9 Alcatel and the Alcatel logo are registered trademarks of Alcatel. All other trademarks are the property of their respective owners. Alcatel assumes no responsibility for the accuracy of the information presented, which is subject to change without notice Alcatel. All rights reserved. 3GQ TQZZA Ed.01
IP Multimedia Subsystem (IMS) Service Architecture
IP Multimedia Subsystem (IMS) Service Architecture Supports multiple applications by providing traditional telephony and non-telephony services Cost savings and revenue generating capabilities are driving
More informationImplementing Conditional Conference Call Use Case over IMS and Non IMS Testbed an experimental results through comparison approach
Proceedings of the 6th WSEAS International Conference on Applications of Electrical Engineering, Istanbul, Turkey, May 27-29, 2007 109 Implementing Conditional Conference Call Use Case over IMS and Non
More informationINTELLIGENT NETWORK SERVICES MIGRATION MORE VALUE FOR THE
INTELLIGENT NETWORK SERVICES MIGRATION MORE VALUE FOR THE Voice over LTE SUBSCRIBER TECHNOLOGY White Paper Mobile operators have invested a lot of time and money in Intelligent Network (IN) services for
More informationVIDEO IVR VAS & Customer Care
Marketing Overview Plan Overview VIDEO IVR VAS & Customer Care January 26, 2011 April 2010 xx, APEX 2010 Voice / Page Communications, 1 Inc. All rights reserved. Marketing Who Plan is APEX? Overview VIDEO
More informationNext-Generation Media Processing for Packet Networks
Next-Generation Processing for Packet Networks By Keith Byerly, Senior Market Development Manager September 2004 white paper Abstract Within the last ten years, the IT world has experienced a revolution
More informationBuilding Applications with Vision Media Servers
Building Applications with Vision Media Servers Getting Your Ideas to Market Fast David Asher Director, Product Management, Platform Solutions NMS at a Glance Founded in 1983, publicly traded since 1994
More informationConferencing Using the IP Multimedia (IM) Core Network (CN) Subsystem
GPP X.S00-0 Version.0 Version Date: May 00 Conferencing Using the IP Multimedia (IM) Core Network (CN) Subsystem Revision: 0 COPYRIGHT GPP and its Organizational Partners claim copyright in this document
More informationIP Telephony (Voice over IP)
(Voice over IP) Instructor Ai-Chun Pang, acpang@csie.ntu.edu.tw Office Number: 417, New building of CSIE Textbook Carrier Grade Voice over IP, D. Collins, McGraw-Hill, Second Edition, 2003. Requirements
More informationCisco IOS Voice XML Browser
Cisco IOS Voice XML Browser Cisco Unified Communications is a comprehensive IP communications system of voice, video, data, and mobility products and applications. It enables more effective, more secure,
More informationMSCML Protocol: The Key to Unlocking a New Generation of Multimedia SIP Services
MSCML Protocol: The Key to Unlocking a New Generation of Multimedia SIP Services Eric Burger Vice President CTO of Next-Generation Communications Greg Pisano Market Development Director Carrier Enhanced
More informationCisco IOS Voice XML Browser
Cisco IOS Voice XML Browser Cisco Unified Communications is a comprehensive IP communications system of voice, video, data, and mobility products and applications. It enables more effective, more secure,
More informationPacketized Telephony Networks
Packetized Telephony Networks Benefits of Packet Telephony Networks Traditionally, the potential savings on long-distance costs was the driving force behind the migration to converged voice and data networks.
More informationAdvanced SIP Series: SIP and 3GPP
Advanced SIP Series: SIP and 3GPP, Award Solutions, Inc Abstract The Session Initiation Protocol has been selected as the main signaling protocol of the Third Generation Partnership Projects IP Multimedia
More informationCisco Healthcare Intelligent Contact Center
Solution Overview Cisco Healthcare Intelligent Contact Center Cisco Healthcare Intelligent Contact Center provides a centralized approach to a virtualized contact center that can help improve communication
More informationLINDENBAUM s HIGH-AVAILABLE MEDIA RESOURCE FUNCTION BASED ON A MicroTCA SYSTEM by N.A.T.
WHITEPAPER LINDENBAUM s HIGH-AVAILABLE MEDIA RESOURCE FUNCTION BASED ON A MicroTCA SYSTEM by N.A.T. Germany May 2012 Whitepaper Lindenbaum & N.A.T. Page 1/10 CONTENT A high-available Media Resource Function
More informationFixed Mobile Convergence - A Pre-IMS Solution
Fixed Mobile Convergence Migration for Cable Operators Moving From Next Generation Network to IMS Environment The growing market demand for service convergence is the driving force behind the development
More informationArchitectural Overview of IP Multimedia Subsystem -IMS
Architectural Overview of IP Multimedia Subsystem -IMS Presented by: Masood Khosroshahy June 2006 B E G I N N I N G 1 Project supervisor: Prof. Elie Najm Simplified view of the layered architecture in
More informationAlcatel-Lucent 1300 Convergent Network Management Center OPEX REDUCTION THROUGH INTEGRATED NETWORK MANAGEMENT
Alcatel-Lucent 1300 Convergent Network Management Center OPEX REDUCTION THROUGH INTEGRATED NETWORK MANAGEMENT The Alcatel-Lucent 1300 Convergent Network Management Center (CMC) provides cost-effective
More informationSIP-Based Solutions in the Contact Center: Using Dialogic Media Gateways with the Genesys Voice Platform
-Based Solutions in the Contact Center: To stay competitive and keep their customers happy and loyal, companies are working hard to enhance customer service as costeffectively as possible. Contact centers
More informationEnterprise Communication Suite
Enterprise Communication Suite Media Routes is a Canadian company incorporated in the province of Ontario and having head office in Vancouver, British Columbia, Canada. Media Routes is an in-house developer
More informationNSP Software Summit: Next Generation Voice Messaging - A Key to your Success. Alain Decartes Business Development Manager WW SGBU Sales
NSP Software Summit: Next Generation Voice Messaging - A Key to your Success Alain Decartes Business Development Manager WW SGBU Sales 2004 Hewlett-Packard Development Company, L.P. The information contained
More informationWHAT S BEHIND YOUR SMARTPHONE ICONS? A brief tour of behind-the-scenes signaling for multimedia services
WHAT S BEHIND YOUR SMARTPHONE ICONS? A brief tour of behind-the-scenes signaling for multimedia services Harry G. Perros Computer Science Department NC State University, Raleigh 27695 USA Email: hp@ncsu.edu
More informationIntroducing Cisco Unified Communications Express
CHAPTER 1 Introducing Cisco Unified Communications Express Cisco Unified Communications Express is an award-winning communications solution that is provided with the Cisco Integrated Services Router portfolio.
More informationTelephony and collaboration made easy
Telephony and collaboration made easy Converged VoIP is a Cisco-powered and certified solution that delivers a broad range of Unified Communications solutions via a hosted and flexible pay-by-the-device
More informationLINDENBAUM s HIGH-AVAILABLE MEDIA SERVER BASED ON A. MicroTCA SYSTEM. by N.A.T.
WHITEPAPER LINDENBAUM s HIGH-AVAILABLE MEDIA SERVER BASED ON A MicroTCA SYSTEM by N.A.T. Germany May 2012 Whitepaper Lindenbaum & N.A.T. Page 1/10 CONTENT A high-available Media Server based on MicroTCA
More informationETSI TS 124 147 V6.8.0 (2008-04) Technical Specification
TS 124 147 V6.8.0 (2008-04) Technical Specification Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Conferencing using the IP Multimedia (IM) Core
More informationRealising the Potential of VoiceXML
Realising the Potential of VoiceXML mobilkom austria Agenda Mobilkom Austria Group VoiceXML services at Mobilkom Austria Advantages of the VoiceXML approach Realising the potential of VoiceXML Conclusion
More informationEnd-2-End QoS Provisioning in UMTS networks
End-2-End QoS Provisioning in UMTS networks Haibo Wang Devendra Prasad October 28, 2004 Contents 1 QoS Support from end-to-end viewpoint 3 1.1 UMTS IP Multimedia Subsystem (IMS)................... 3 1.1.1
More informationVoice Processing Standards. Mukesh Sundaram Vice President, Engineering Genesys (an Alcatel company)
Voice Processing Standards Mukesh Sundaram Vice President, Engineering Genesys (an Alcatel company) Agenda Interactive Voice Response Speech Processing Computer Telephony Integration IP Telephony Standards
More informationHP OpenCall Media Platform 4.1 Audio and Video conferencing
HP OpenCall Media Platform 4.1 Audio and Video conferencing Data sheet Key benefits IP multimedia system (IMS) ready: Supports 3GPP video and audio codecs, based on SIP/NETANN and MSCML protocols for connection
More informationIntegrated Conferencing Solutions
White Paper October 2010 s For Smaller or Emerging Market Collaboration s Overview It s an opportune time for smaller or emerging market collaboration service providers to jump into next generation audio
More informationTelephone Charging System
Telephone Charging System Helsinki University of Technology Yao Yanjun Petteri Tulikoura Agenda Introduction Traditional telephone charging system Outdated Charging Charging Nowadays Future scenarios for
More informationIMS Services Introduction
IMS Services Introduction www.huawei.com References 3GPP TS 23.002: Network architecture 3GPP TS 23.218: IP Multimedia (IM) session handling; IM call model 3GPP TS 23.228: IP Multimedia Subsystem (IMS);
More informationBENEFITS OF MIGRATING IVR SERVICES TO SIP/RTP AS A PRELUDE TO NEW MEDIA SERVICE DELIVERY
WHITE PAPER BENEFITS OF MIGRATING IVR S TO SIP/RTP AS A PRELUDE TO NEW DELIVERY CONTENTS EXECUTIVE SUMMARY 1 S ARCHITECTURE 2 THE DISTRIBUTED ADVANTAGE 2 WHY NOT DISTRIBUTE THE? 3 NGN, IMS AND IVR TERMINOLOGY
More informationIP Media Servers for Next-Generation Contact Centers
White Paper September 2008 IP Media Servers for Next-Generation Contact Centers Overview Next-generation contact centers deliver services across multiple modes of communication: voice, fax, e-mail, instant
More informationMultimedia Conferencing Solutions
Multimedia Solutions Fixed users are migrating to... Mobile Audio users are migrating to... Video CSPs are migrating to... Radisys ECONOMICAL FLEXIBLE RELIABLE DIFFERENTIATED INTEGRATED SCALABLE The conferencing
More informationContents. Specialty Answering Service. All rights reserved.
Contents 1 Introduction... 2 2 PBX... 3 3 IP PBX... 4 3.1 How It Works... 4 3.2 Functions of IP PBX... 5 3.3 Benefits of IP PBX... 5 4 Evolution of IP PBX... 6 4.1 Fuelling Factors... 6 4.1.1 Demands from
More informationTesting IVR Systems White Paper
Testing IVR Systems Document: Nexus8610 IVR 05-2005 Issue date: Author: Issued by: 26MAY2005 Franz Neeser Senior Product Manager Nexus Telecom AG, Switzerland We work to improve your network Abstract Interactive
More informationPaving the Way to Next Generation Media and Signaling VoIP Gateways
Small Logo Paving the Way to Next Generation Media and Signaling VoIP Gateways Executive Summary This white paper examines how the rapid adoption of SIP and the distribution of network elements are moving
More informationBLACK BOX. The Changing Communications Market. PBX Systems for Voice over IP (VoIP)
The Changing Communications Market BLACK BOX Learn how this new technology is in reach for small and medium businesses (SMBs). Hybrid PBX VoIP Gateways Box IP Phones Headsets 724-746-5500 blackbox.com
More informationPRODUCT GUIDE Version 1.2 HELPDESK EXPRESS 1.0
Version 1.2 HELPDESK EXPRESS 1.0 Revision 1 - March 2005 PRODUCT GUIDE HELPDESK EXPRESS 1.0 Version 1.2 Revision 1 - February 2005 ProTel Communications Ltd. follows a policy of continuous development
More informationCisco IOS VoiceXML Browser
Cisco IOS VoiceXML Browser Q. What is VoiceXML? A. Voice Extensible Markup Language (VoiceXML) is an XML-based creation environment for voice applications including user interfaces for use with automatic-speech-recognition
More informationInter-Domain QoS Control Mechanism in IMS based Horizontal Converged Networks
Inter-Domain QoS Control Mechanism in IMS based Horizontal Converged Networks Mehdi Mani Wireless Networks and Multimedia Service Department GET-INT Evry, France mehdi.mani@int-evry.fr Noel Crespi Wireless
More informationReceiving the IP packets Decoding of the packets Digital-to-analog conversion which reproduces the original voice stream
Article VoIP Introduction Internet telephony refers to communications services voice, fax, SMS, and/or voice-messaging applications that are transported via the internet, rather than the public switched
More informationAn Evaluation of Architectures for IMS Based Video Conferencing
An Evaluation of Architectures for IMS Based Video Conferencing Richard Spiers, Neco Ventura University of Cape Town Rondebosch South Africa Abstract The IP Multimedia Subsystem is an architectural framework
More information... Figure 2: Proposed Service Invocation Mechanism. AS Service invocation 2 SC invocation 2. Session/Call Control Function
Next Generation Network Service Architecture in the IP Multimedia Subsystem Anahita Gouya, Noël Crespi, Lina Oueslati, {anahita.gouya, noel.crespi, lina.oueslati}@int-evry.fr, Institut National des Télécommunications
More informationA Proposed Model For QoS guarantee In IMSbased Video Conference services
International Journal of Intelligent Information Technology Application, 2009, 2(5):243-249 A Proposed Model For QoS guarantee In IMSbased Video Conference services Maryam Kiani Department of Electrical
More informationCourse 4: IP Telephony and VoIP
Course 4: IP Telephony and VoIP Telecommunications Technical Curriculum Program 3: Voice Knowledge 6/9/2009 1 Telecommunications Technical Curriculum Program 1: General Industry Knowledge Course 1: General
More informationVoiceXML and VoIP. Architectural Elements of Next-Generation Telephone Services. RJ Auburn
VoiceXML and VoIP Architectural Elements of Next-Generation Telephone Services RJ Auburn Chief Network Architect, Voxeo Corporation Editor, CCXML Version 1.0, W3C Ken Rehor Software Architect, Nuance Communications
More informationHttp://www.passcert.com
Http://www.passcert.com Exam : 70-337 Title : Enterprise Voice & Online Services with Microsoft Lync Server 2013 Version : DEMO 1 / 18 Topic 1, Litware, Inc Case A Overview Litware, Inc., is an international
More informationII. Service deployment
BULGARIAN ACADEMY OF SCIENCES CYBERNETICS AND INFORMATION TECHNOLOGIES Volume 9, No 3 Sofia 2009 Integration of Services Implemented on Different Service Platforms Evelina Pencheva, Ivaylo Atanasov Technical
More informationWhich VoIP Architecture Makes Sense For Your Contact Center?
a White Paper from Vanguard Communications Which VoIP Architecture Makes Sense For Your Contact Center? by Areg Gharakhanian August 2002 Vanguard Communications Corporation 100 American Road Morris Plains,
More informationSIP Trunking with Microsoft Office Communication Server 2007 R2
SIP Trunking with Microsoft Office Communication Server 2007 R2 A Dell Technical White Paper By Farrukh Noman Dell Product Group - Enterprise THIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY, AND MAY
More informationSession Initiation Protocol (SIP)
Session Initiation Protocol (SIP) An Alcatel Executive Briefing August, 2002 www.alcatel.com/enterprise Table of contents 1. What is SIP?...3 2. SIP Services...4 2.1 Splitting / forking a call...4 2.2
More informationVoIP Conferencing. The latest in IP technologies deliver the next level of service innovation for better meetings. Global Collaboration Services
Global Collaboration Services VoIP Conferencing The latest in IP technologies deliver the next level of service innovation for better meetings. ENERGIZE YOUR CONNECTIONS Table of Contents > > Contents...
More informationPSTN IXC PSTN LEC PSTN LEC STP STP. Class 4. Class 4 SCP SCP STP. Switch. Switch STP. Signaling Media. Class 5. Class 5. Switch.
As we enter the 21st century, we are experiencing a telecommunications revolution. From a technological perspective, the distinction between voice information and other kinds of data is blurring as circuit-switched
More informationSession Border Controller
Session Border Controller SBC OVERVIEW: Media Routes SBC is an advanced, comprehensive Policy enforcement point, Session Management and Service Orchestration engine deployed as a network border element
More informationService Broker 1.0 Service Broker Operator Guide
Service Broker 1.0 Service Broker Operator Guide Free Operator Guide The Moriana Group March 2010 Section B Thought Leadership White Papers Thought Leadership White Papers 2 Service Broker Operator Guide
More informationAcme Packet Net-Net SIP Multimedia-Xpress
Acme Packet Net-Net SIP Overview Net-Net SIP (SMX) combines IP Multimedia Subsystem (IMS) session management with leading session border control (SBC) functions to reduce the complexity and cost of delivering
More informationDialogic IP Media Server. Erik Pras
Dialogic IP Media Server Erik Pras What is the Dialogic IP Media Server? The Dialogic IP media server is a SIP and other open standards based software only media processing platform for voice and video
More informationHow To Make A Cell Phone Converged Into A Cell Network
MPLS: Enabling Fixed-Mobile Convergence Barry M. Tishgart Vice President, Managed Services 2006 11 10 SPRINT, the "Going Forward" logo, the NEXTEL name and logo and other trademarks are trademarks of Sprint
More informationOverview of Voice Over Internet Protocol
Overview of Voice Over Internet Protocol Purva R. Rajkotia, Samsung Electronics November 4,2004 Overview of Voice Over Internet Protocol Presentation Outline History of VoIP What is VoIP? Components of
More informationGlobal Headquarters: 5 Speen Street Framingham, MA 01701 USA P.508.872.8200 F.508.935.4015 www.idc.com
WHITE PAPER Converged Business Networks: Simplifying Network Complexity Sponsored by: Level 3 Melanie Posey November 2010 Global Headquarters: 5 Speen Street Framingham, MA 01701 USA P.508.872.8200 F.508.935.4015
More informationThe Cross-Media Contact Center
Whitepaper The Cross-Media Contact Center The Next-Generation Replacement for the Traditional Call Center Intel in Communications Executive Summary Because call centers are a principal point of contact
More informationDeployment Of Multi-Network Video And Voice Conferencing On A Single Platform
Deployment Of Multi-Network Video And Voice Conferencing On A Single Platform Technical White Paper Document Overview This document provides an overview of the issues, capabilities and benefits to be expected
More informationOperating in Two Worlds: Routing Plan Management for VoIP/PSTN Compatibility
Operating in Two Worlds: Routing Plan Management for VoIP/PSTN Compatibility Nominum, Inc. 2385 Bay Road Redwood City, CA 94063 (650) 381-6000 www.nominum.com Contents Operating in Two Worlds... 1 Routing
More informationPacket Switched Voice (over IP) and Video Telephony Services End-to-end System Design Technical Report
GPP X.R00-0 Version:.0 Date: November 00 Packet Switched Voice (over ) and Video Telephony Services End-to-end System Design Technical Report COPYRIGHT GPP and its Organizational Partners claim copyright
More informationDialogic BorderNet Session Border Controller Solutions
Dialogic BorderNet Session Border Controller Solutions Dialogic BorderNet Session Border Controllers Transform, Connect and Secure Today s Networks and Services Dialogic BorderNet Session Border Controller
More informationIP Contact Center: Realize the Full Business Potential of IP Contact Centers
IP Contact Center: Realize the Full Business Potential of IP Contact Centers WHITEPAPER The joint solution from Cisco and IBM provides people, processes, and technology needed to maximize the return on
More informationIntegration of Voice over Internet Protocol Experiment in Computer Engineering Technology Curriculum
Integration of Voice over Internet Protocol Experiment in Computer Engineering Technology Curriculum V. Rajaravivarma and Farid Farahmand Computer Electronics and Graphics Technology School of Technology,
More informationEXPLOITING SIMILARITIES BETWEEN SIP AND RAS: THE ROLE OF THE RAS PROVIDER IN INTERNET TELEPHONY. Nick Marly, Dominique Chantrain, Jurgen Hofkens
Nick Marly, Dominique Chantrain, Jurgen Hofkens Alcatel Francis Wellesplein 1 B-2018 Antwerp Belgium Key Theme T3 Tel : (+32) 3 240 7767 Fax : (+32) 3 240 8485 E-mail : Nick.Marly@alcatel.be Tel : (+32)
More informationIMS & Triple Play Services Architecture
IMS & Triple Play Services Architecture Brian Mahony, VP Marketing Guillaume Widmer, CTO Triple Play Symposium, September 2005 2005 Netcentrex S.A. All rights reserved. Netcentrex S.A. Proprietary Information.
More informationSIP : Session Initiation Protocol
: Session Initiation Protocol EFORT http://www.efort.com (Session Initiation Protocol) as defined in IETF RFC 3261 is a multimedia signaling protocol used for multimedia session establishment, modification
More informationMobile Wireless Overview
Mobile Wireless Overview A fast-paced technological transition is occurring today in the world of internetworking. This transition is marked by the convergence of the telecommunications infrastructure
More informationAddressing Convergence and IP Telephony in Enterprise Communications
Addressing Convergence and IP Telephony in Enterprise Communications Introduction The convergence of voice and data networks has begun to drive radical changes in the development and delivery of products
More informationIVR in Virtual ACD Solutions
IVR in Virtual ACD Solutions West Interactive Corporation Steve McCoy, Director, Technology Strategy March 2008 Background C203: Infrastructure for contact centers adapting to Voice Search What is Voice
More informationDesign Document. Offline Charging Server (Offline CS ) Version 1.0. - i -
Design Document Offline Charging Server (Offline CS ) Version 1.0 - i - Document Scope Objective The information provided in this document specifies the design details of Operations of Offline Charging
More informationAn Oracle White Paper February 2014. Centralized vs. Distributed SIP Trunking: Making an Informed Decision
An Oracle White Paper February 2014 Centralized vs. Distributed SIP Trunking: Making an Informed Decision Executive Overview Businesses across the globe are migrating from TDM access services to SIP trunks
More informationSession Initiation Protocol (SIP) The Emerging System in IP Telephony
Session Initiation Protocol (SIP) The Emerging System in IP Telephony Introduction Session Initiation Protocol (SIP) is an application layer control protocol that can establish, modify and terminate multimedia
More informationDirectQuality R7 - Service Level Test Automation
DirectQuality R7 - Service Level Test Automation Multi-User, Server-Based Management Proactive Service Level Test Management for Voice, VoIP, Fax, Video and Internet over IP, TDM, PacketCable, Cellular
More informationService Delivery Platforms for Network Operators
Service Delivery Platforms for Network Operators 26 Service Delivery Platforms for Network Operators Kansuke Kuroyanagi Yuichi Mori OVERVIEW: SDPs deployed by mobile operators have been successfully growing
More informationMED: Voice over IP systems
www.ptt.co.uk Online course specification MED: Voice over IP systems Target audience: This online course is designed for those who will be responsible for the design or maintenance of Voice over IP (VoIP)
More informationIndepth Voice over IP and SIP Networking Course
Introduction SIP is fast becoming the Voice over IP protocol of choice. During this 3-day course delegates will examine SIP technology and architecture and learn how a functioning VoIP service can be established.
More informationEfficient evolution to all-ip
Press information June 2006 Efficient evolution to all-ip The competitive landscape for operators and service providers is constantly changing. New technologies and network capabilities enable new players
More informationNGN Functional Architecture for Resource Allocation and Admission Control
NGN Functional Architecture for Resource Allocation and Admission Control 1 Hassan Yeganeh, 2 Maryam Shakiba, and 3 Amir hassan Darvishan Iran Telecommunication Research Center 1 yeganeh@itrc.ac.ir, 2
More informationCOPYRIGHTED MATERIAL. Contents. Foreword. Acknowledgments
Contents Foreword Preface Acknowledgments 1 Introduction 1 1.1 Motivation for Network Convergence 1 1.2 The Core Network 2 1.3 Legacy Service Requirements 4 1.4 New Service Requirements 5 1.5 Architectures
More informationPractical Steps Toward Fixed Mobile Convergence for IP Communications
Practical Steps Toward Fixed Mobile Convergence for IP Communications Solutions for the Contact Center Jeff Dworkin Dialogic Agenda Importance of HD Voice for the Contact Center Impact of Fixed Mobile
More informationNetwork Marketing With Appngin and Services
Say Hello to Service Delivery Platform for Converged Communication appngin helps telecommunication operators become more competitive with new and powerful next generation applications. It s an engine that
More informationAuthentication and Authorisation for Integrated SIP Services in Heterogeneous Environments 1
Authentication and Authorisation for Integrated SIP Services in Heterogeneous Environments 1 Dorgham Sisalem, Jiri Kuthan Fraunhofer Institute for Open Communication Systems (FhG Fokus) Kaiserin-Augusta-Allee
More informationNeoIVR. Flexible & high performance IVR platform
NeoIVR Flexible & high performance IVR platform Neotiq 2 rue d Estienne d Orves 94230 CACHAN France RCS Créteil491 583 316 info@neotiq.com www.neotiq.com NeoIVR v 1.2 «A unique Interactive Voice Response
More informationApplication Note. Configuring Dialogic Host Media Processing Software Release 3.1LIN Software Licenses
Application Note Configuring Dialogic Host Media Processing Software Release 3.1LIN Software Licenses Application Note Configuring Dialogic Host Media Processing Software Release 3.1LIN Software Licenses
More informationConvergence: The Foundation for Unified Communications
Convergence: The Foundation for Unified Communications Authored by: Anthony Cimorelli, Senior Product Marketing Manager Onofrio Norm Schillaci, Principal Sales Engineer Michelle Soltesz, Director, Marketing
More informationETSI TS 182 023 V2.1.1 (2009-01) Technical Specification
TS 182 023 V2.1.1 (2009-01) Technical Specification Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Core and enterprise NGN interaction scenarios; Architecture
More informationVoice over IP is Transforming Business Communications
White Paper Voice over IP is Transforming Business Communications Voice over IP (VoIP) is changing the world of telecommunications. It entails the transmission of voice calls over data networks that support
More informationGoal We want to know. Introduction. What is VoIP? Carrier Grade VoIP. What is Meant by Carrier-Grade? What is Meant by VoIP? Why VoIP?
Goal We want to know Introduction What is Meant by Carrier-Grade? What is Meant by VoIP? Why VoIP? VoIP Challenges 2 Carrier Grade VoIP Carrier grade Extremely high availability 99.999% reliability (high
More informationSIP Trunking to Microsoft Lync (Skype for Business) Server
SIP Trunking to Microsoft Lync (Skype for Business) Server SIP Trunking to Lync/Skype for Business Server The emergence of Unified Communications integrating communications services into desktop and mobile
More informationQuality Estimation for Streamed VoIP Services
Quality Estimation for Streamed VoIP Services Mousa Al-Akhras and Hussein Zedan STRL, De Montfort University, Leicester, UK makhras@dmu.ac.uk, hzedan@dmu.ac.uk http://www.cse.dmu.ac.uk/strl/index.html
More informationEmpowering Enterprise-Wide Customer Service with SIP
Empowering Enterprise-Wide Customer Service with SIP Table of contents Customer Service in Evolution...1 SIP Enabling IP Customer Service Transformation...6 Unified Communications and Collaborations Improve
More informationOverview ENUM ENUM. VoIP Introduction (2/2) VoIP Introduction (1/2)
Overview Voice-over over-ip (VoIP) ENUM VoIP Introduction Basic PSTN Concepts and SS7 Old Private Telephony Solutions Internet Telephony and Services VoIP-PSTN Interoperability IP PBX Network Convergence
More information