Pune, India, 13 – 15 December 2010 ITU-T Kaleidoscope 2010 Beyond the Internet? - Innovations for future networks and services Ivan Gaboli, Virgilio Puglia Italtel SpA italtel.it SIP Trunking The route to the new VoIP Services

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 2 SIP Business Trunking Architectural Model Class 5 Softswitch Network Border Elements IP-PBX Very Large Enterprise Medium/Large Enterprise Public Domain Private Domain NGN ISUP Media PSTN/PLMN SIP-I SIP CN IP-PBX Customer Border Elements AS Customer Border Elements AS

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 3 Network Elements Public Domain Applications Servers Class 5 Softswitch Media Gateways Network Border Element Private Domain Corporate Border Element Corporate Switching Node Application servers IP PBXs

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 4 New world of services Mobile Enterprise Mobile office User ubiquity Any-Device, Any-Time, Any-Where Unified communication & collaboration Unified messaging Telepresence Document sharing Virtual meeting rooms Web 2.0 Social Media Networks Presence Federation Co-opetition & Mass creativity

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 5 Innovation Fields Security Secured channels Data confidentiality Network reliability Governance Simplified network management Managed services Easy customization High performance User autonomy (Self-Care portals) Sustainability Virtualization Ecology

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 6 Basic Call Setup Flow

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 7 SIP Business Trunking – Signaling Model ISDN Like Signaling is decoupled by IP-PBX and Media is anchored by the IP-PBX using a Media Termination Function to emulate a PBX behaviour Pure SIP Signaling goes peer-to-peer between IP-PBXs Hierarchic Signaling between IP-PBXs is manipulated by a centralized harmonization function (HF) that can also anchor the media

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 8 SIP Business Trunking – Signaling Model Class 5 Softswitch IP-PBX MTP Class 5 Softswitch IP-PBX HF ISDN-Like Pure SIP Hierarchic Class 5 Softswitch MTP

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 9 SIP Business Trunking - User Plane Models Fixed Media RTP is anchored by IP-PBX The core network it is not affected by media changing related to services invocation IP-PBX needs a Media Termination Function to perform media anchoration Variable Media RTP is peer-to-peer The core network must manage all the RTP negotiatons due to user services invocation IP-PBX can implement various type of services and use several types of codecs

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 10 Pure SIP Model – Service invocation

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 11 Go to market approach Full Jacket Pre-packaged solution Low customization High reusability Customer Tailored High customer requirements compliancy High customization possibility High costs for deployment and certification

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 12 Services Enabler Features To implement New Services the network must leverage the following capabilities: Identity management & certification Voice-Video codec/rating adaptation Signaling harmonization Security & Encryption capabilities Management of specific peculiarities Accounting capabilities

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 13 Services Enabler Device IDAD Inter-Domain Adaptation Device Interdomain features harmonization Signaling decoupling & normalization Media Anchoring Dynamic Audio/Video transcoding/Transrating Session Admission Control Fax adaptation DTMF interworking Encryption termination

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 14 IDAD Media Anchoring Class 5 Softswitch BE IP-PBX Enterprise A Enterprise B Class 5 Softswitch BE IP-PBX Enterprise A Enterprise B No Media Anchoring Media Anchoring IDAD

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 15 Interdomain features harmonization

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 16 Network Semplification A measure of complexity can be assessed in proportion to the possible combination of all the devices involved. When a new domain is added, the complexity with IDAD is significantly minor than without:

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 17 SIP Business Trunk Benefits Fast provisioning High performance & reliability Governance Cost savings Replacement of local telephone connections with VoIP gateways Reduction in IT operating costs Growth More efficient communications platforms Improved services Smart migration Acceleration of communications processes for greater efficency Support for community and semi-formal teams

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 18 Lesson learned Facts SIP Trunking will permit creation of new services for VoIP business market Standardization facilitates interoperability Manufacturers extend standards with proprietary customization to provide new services IDAD is the trade-off between time to market and standardization.

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 19 Back Up Slide

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 20 Basic Call Setup Flow

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 21 Pure SIP Model – Service invocation

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 22 Hierarchic Model - Service Invocation

Pune, India, 13 – 15 Dec 2010: ITU-T Kaleidoscope 2010 – Beyond the Internet? Innovations for future networks and services 23 ITU Standardization vs IDAD The strengthening of the standards is the main way to go forward for multi-vendor interoperable solutions, but its a must also consider the presence of several small/medium players that perform customization to provide services. IDAD is the trade-off between time to market and standardization.