Communication Services
Transcription
Communication Services
Poste Italiane - Empowering the Workforce with Unified Communications- 21-Feb, 12:00 - 13:00 Auditorium 341, Level 3 Speakers: Antonio Talamo Marco Michelozzi Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 2 Posteitaliane Group & Activities Employee > 154.000 Country coverage Main offices 140 Post offices 14.000 Logistic Center 105 Revenue 16,5 B€ Postal sevices 5,2 M€ Financial services 4,0 M€ Insurance services 7,0 M€ Checking Accounts : 4,583,000 Growth 2005/04 + 13,6% Posteitaliane Group is the wider service Company both for Citizen and Industry Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC ICT in Posteitaliane Posteitaliane ICT is the high value Integrated Services Company provider for the entire group trough innovative usage of Informattion and Communication technologies. Provide services both internal and external customers Key figures: >500K phisical devices 100K users approx. >14K LAN, 450K BPOL Customers >18K Server 4.5M Checking Accounts >2.2K PBX, 45K lines 4B transaction/year >14.5K data access links Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 4 Network & DataCenter Infrastructure a triple play approach Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 5 Telecommunication Network and Services Business PA Mobile Mobile PosteMobile TELC PosteMobile TELC OO Fixed Fixed TELC TELC TELCOs TELCOs OO Finance PMI Extranet Extranet Internet Internet TELCOs TELCOs Content Content Providers Providers POP IDC CENTRAL 2 POP IDC CENTRAL 1 POP North Distribution POP / Data Center SOUTH MPLS MPLS Centro Centro 5 Regional MPLS Network with Disaster Recovery e Business Continuity in the aggregation layer Voice & Video Dual BackBone POP IDC North MPLS MPLS Sud Sud Extranet connectivity 400 Mps >140 extranet with Partner Customer BackBone: 2 Optical Backbone with different telcos (up to 10 Gbps) Mobile Data Center MPLS MPLS Nord Nord Internet connectivity 400 Mps BackBone / Distribution Voice & Video Core Content Providers MPLS MPLS Nord Nord MPLS MPLS Centro Centro RegionalMonitoring MonitoringCenters Centers Regional Public Access Retail LAN / WAN Infrastructure Switch ports 534.240 Router 30.756 SAN ports 4.000 Firewall 150 Fiber Km Wired copper line Km Workstation WiMAX WiMAX 70 5.228 Approx. 100.000 Audio & Video Infrastructure Internal Access > 66.000 end-user devices Ch ann el L oca tion Call Center Postal Office Main Branch Offixe n atio c o al L stri u d In Voice / VoIP Distribution Location IPTV > 300 Sedi (previs. 1000) Centralized TV Control Center Content Delivery Network 3000 Small Postal Office Redundant Infrastructure with Business Continuity Versione: 1.0. Broadband ( XDSL and Optical Fiber) CIO –SRTLC-Progettazione Rete TLC : Data-Voice-Video Triple Play Infrastructure 04/03/2008 Printing Soring Centers Center 2 redundant SoftSwitch in 2 sites for Business Continuity & Disaster Recovery Sedi in Larga Banda Sedi di Canale c.a. 14000 Sedi Industriali c.a. 3500 6 Access Distribution Core IP Network Layer Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 7 Disaster Recovery & Business Continuity: Distribution/Aggregation Layer7 Raccolta c/o DC Architettura Logica: percorso di Business Continuity Raccolta c/o DC Architettura Logica: percorso di backup VPN IDC CENTRO P PE MPLS 3 PE MPLS 3 VPN Dc BC BK VPN Dc SUD1 BC PE MPLS 2 VPN IDC CENTRO BC PE MPLS 2 VPN DR-MF BK PE MPLS 1 PE MPLS 2 PE MPLS 3 PE MPLS 3 PE MPLS 3 VPN IDC NORD P VPN Dc BC BC BK VPN DR-MF P VPN IDC NORD BK VPN IDC CENTRO P VPN Dc BC BK VPN D c SUD1 BC PE MPLS 3 VPN IDC CENTRO BC VPN DR-MF BK VPN IDC NORD P VPN Dc BC BC BK VPN DR-MF P VPN IDC NORD BK PE MPLS 1 PE MPLS 2 IDC Centro IDC NORD DR-MF IDC Centro IDC NORD DR-MF PE MPLS 2 PE MPLS 2 PE MPLS 1 PE MPLS 1 PE MPLS 1 PE MPLS 1 VPN Dc BC VPN DR-MF VPN Dc BC VPN DR-MF VPN IDC CENTRO VPN IDC CENTRO VPN IDC NORD VPN IDC NORD VPN Dc SUD2 VPN Dc SUD1 VPN Dc SUD2 VPN Dc SUD1 PE MPLS 2 PE MPLS 1 VPN Dc SUD2 BK VPN Dc SUD1 P VPN DR-MF BC VPN Dc SUD1 P PE MPLS 2 S(H)DSL ADSL DC BC DC BC Sede UP2/UP3/UP4 avente come sito principale DR-MF DC SUD 2 DC SUD DC SUD 1 DC SUD 2 DC SUD WAN POSTE Gateway Voip 10.21x.y.9 Media Gateway Virtuale 10.21x.y.1 Fisici 10.21x.y.11 - 22 Disaster Recovery .9 Router MPLS Management VLAN 2 VOIP VLAN 168 Dati VLAN 3 Telefoni IP Gli indirizzi vengono assegnati automaticamente dal DHCP con la corretta maschera e gateway della rete ospite. 10.21x.y.z Dove Z va da 22 a ultimo indirizzo della rete Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 PE MPLS 1 VPN Dc BC P PE MPLS 3 PE MPLS 2 VPN Dc SUD2 BC PE MPLS 1 VPN Dc SUD2 BK ADSL PE MPLS 3 PE MPLS 3 VPN IDC NORD BC S(H)DSL VPN Dc BC P DC SUD 1 PE MPLS 1 VPN Dc SUD2 BK VPN Dc SUD1 P PE MPLS 2 VPN DR-MF BC VPN Dc SUD2 BK PE MPLS 2 VPN Dc SUD2 BC PE MPLS 3 VPN Dc SUD1 P VPN IDC NORD BC PE MPLS 1 VPN IDC CENTRO BK PE MPLS 3 PE MPLS 1 Business Continuity Sede UP2/UP3/UP4 avente come sito principale DR-MF VPN IDC CENTRO BK PE MPLS 2 PE MPLS 3 8 Data Center & Core Infrastructure MILANO- Settimo Milanese (IBM) MILANO IDC MILANO Carrier TLC 1 5 Gbit/s DWDM Long Distance Arte Antica Carrier TLC 2 2,5 Gbit/s DWDM Long Distance IDC ROMA DC BARI Roma Eur Control Room Dark Fiber DWDM Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 DC Roma 2 9 Data Centers Capacità operativa (2007) 1. Storage 2. Computational capacity: Mainframe 3. Computational capacity: Open systems Milano* Milano Roma (siti A e B) 480 TB approx. 14.000 MIPS approx. 55.000 SpecInt approx. Advantages carried out Roma2 – Pomezia Bari Using the Data Center Infrastructure is possible to build up Disaster Recovery solution for all the critical Services easily and with the same capabilities used for Financial Services Presenza sul territorio High Computational and Operational Capabilities distributed over 5 Centers placed in focal regional sites • 1,3 mil. Customer per day visiting Postal Offices • 650 mil. di Checking Payment • 21 mil. Transanction vs Public Services environment Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Voice Core Infrastructure displacement vs MPLS network PSTN IP Carrier Network Enterprise IP Centrex North Small offices VPN North Area VPN Central Area Enterprise IP Centrex South PBX with Backup Connection/ Media gateway Medium & Large Branches Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 IP Carrier Network PSTN ISDN VPN South South Enterprise Voice-Service integrated framework: Hi Level View 11 AGW SWI PSTN ISUP/N7 AGW TGW AGW TGW ISUP/N7 IP Core Operator Network Session Director Session Director Session Director SIP Applicat Layer Virtual IP-PBX S.S. Session Director SIP SIP S.S. Virtual IP-PBX Session Director Applicat Layer Trusted IP Network Session Director SIP H.323 H.323 SIP IPAGW PBX Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 IP enabled AGW PBX IPAGW PBX Application Integration: Cross Interaction Flows Video MCU MMIC 12 Configurator MS IAM Identity Access Management Active Directory AS Web CC Audio/Data MCU VPN BE CMM VPBX VMS FAX Server Softswitch BE BE IP PBX PCS IP Media GW Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 PUBLIC NW Triple Play Network Design: Advantages ONE NETWORK FOR EVERY COMMUNICATION EFFICENT CONVERGENCY FOR DATA/VOICE/VIDEO MORE EFFICENT PLANNING EASILY BUILD UP INTEGRATED SERVICES Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 13 14 Communication Services Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Reach the Goals through integrated trasformations Communication Services Services Transformation Transformation Network Transformation full IP Network Convergent Solutions Integrated Security and Management Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 One User Profile – Many Kind of Access for: • • • • Telephony Services Mobility Collaboration Unified Communicatios 15 Business Transformation Contact Center Business Critical Applications Communications make Business Processes easily and fast Users Needings & Solutions: some practical examples Network Sales: Enhancing Team Working, Fast Commercial Target distribution, Public Communication, Human Res.: Enhancing Team Working , Trasfer Cost Reduction, Private Communication , e-learning Financial Office: Document Archiving & Management BU Mail and COO Document Archiving & Management, Operative Support to Supply Chain Collabotation, Call Conference, Video Conference, Voice Mail, WebTV, Fax Server, IVR Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 16 17 Beginning Study: Hi Level Vision Terminali Mobili Content Provider Esterni Content Cache telefono fisso Sale VDC PC Internet Extranet hosted PBX Infrastruttura Infrastruttura di accesso di accesso hosted IP PBX Media Gateway SIP Virtual IP PBX SIP SoftSwitch Base Dati Utenza Fonia Active Directory Utenza Extranet Infrastruttura di accesso Infrastruttura di trasporto interna al servizio Content Cache SIP SIP/H323/MEGACO MCU/ Media Gateway Fax GW Active Directory Utenza Web Access esterno Directory & Presence Voice Operator Exchange Web Access interno Web TV Content Management VdC MCU LCS Content Cache W.C.C. CTI IAM Content Delivery Manager DMS Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Palinsesti Actual Implementation Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 18 Communication Services Transformation 19 The solution: Unified Communications Services Four services family to address the needings of corporate division: Unified Messaging, Business Communication, Collaboration and Conferecing Services Unified Messaging services “PBX like” Services Private Numbering Services OnePhone / Dual Mode Services Email Telecom Manager Voice mail Video mail Enterprise number Front desk Hostess Business Communications services Audio Conferencing SMS /MMS Fax Web Conferencing Directory Calendaring Collaboration services Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Docs& Files Presence & Instant Messaging Room Video Conf. Conferencing services Communication Services - Unified Messaging Unified Messaging (or UM) is the integration of different streams of communication (e-mail, SMS, Fax, voice, video, etc.) into a single, or, unified 'message store', accessible from a variety of different devices. Inside a single repository The user can manage and store all its message like email, fax and voice. This repository is the user mailbox. The channels available are: E-mail client (POP3, IMAP4, MAPI) Web TUI (Telephone User Interface) Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 20 Communication Services - Voice Messaging Scenario Voice Message Services Service availability: On all Poste Italiane offices (post office, branch office, sorting center) For all user who have a mailbox and/or a VoIP telephone Service platform: Alcatel-Lucent MyMessaging for OXE (ex Alcatel 4400) user Alcatel-Lucent VMS for Virtual-IPPBX user (SIP user) Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 21 Communication Services - Voice Messaging Scenario Easy voice message management: Only one message-store User friendly interface management through e-mail client such as MS Outlook Integration with email platform through an IMAP interface Use case: Answering machine for voice message deposit Message retrieval and management through e-mail Message listening and management through TUI (telephone user interface) Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 22 23 Communication Services - Voice Messaging Architecture One -end Server OneBack Back-end Server for for message store message storeservices services connector Microsoft Microsoft Exchange Exchange 2007 2007 connector + AASoftware SoftwareSuite Suite under Linux under Linux for end user interactivity for end-user interactivity and notification and notificationengine engine My My Messaging Messaging Application Application Server Server VMS VMS Application Application Server Server FAX FAX Application Application Server Server Media Media Server Server Media Media Server Server Media Media Server Server + AAMedia -end Server Server MediaFront Front-end for VXML Interpretation for VXML Interpretation && Network Networkinterfaces interfaces Voice Message Services Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Fax Services 24 Communication Services– Voice Message Deposit Application Server Media Server Web Server network network SIP MRF MRF HTTP/VXML NFS Operations during a message deposit are : •The parameters of the subscription are get in the VMS directory •An IMAP4 session with the Exchange Server is set with the IMAP login and password get from the parameters of the IMAP4 subscription •An inventory of the Inbox, Saved and Greetings folders is made to know if the subscription is saturated or if a personal greeting is set •The message is recorded by the MRF under /VOICEFILES/TMP in the Mailbox buffer •After message validation by the user, a mail is created in memory with a MIME body part including the media file •The IMAP4 push occurs via the IMAP4 APPEND command Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Application Server Mailbox buffer Exchange Server IMAP4 Server Storage solution Communication Services– Voice Message Retrieval 25 Application Server Web Media Server network network SIP MRF MRF Server HTTP/VXML NFS Operations during a message retrieval are : •The parameters of the subscription are get in the VMS directory •An IMAP4 session with the Exchange Server is set with the IMAP login and password get from the parameters of the subscription •Mailbox inventory (through IMAP4 commands) : •Select Inbox •Search command to retrieve messages UID •Fetch commands to retrieve the headers of all messages •Message query : •Fetch Body command to retrieve the complete message and set it in the Mailbox buffer Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Application Server Mailbox buffer Exchange Server IMAP4 IMAP4 Server Storage solution Communication Services– Fax Messaging Scenario Fax Message Services Service availability: On all Poste Italiane offices (post office, branch office, sorting center) For all user who have a mailbox (virtual fax), for fax machine through an IP Terminal Adapter and for fax machine through OXE IP PBX For application through Java API, XML and SMTP Gateway Service platform: Alcatel-Lucent OXE Italtel SoftSwich Sagem Interstar XMedius 5.5 SP Fax Server Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 26 Communication Services– Fax Messaging Scenario Integration with email platform through an SMTP interface and with application through Java API, XML, SMTP Use case: On-net scenario Receiving a FAX from an internal user (email user, fax machine) Sending a FAX to an internal user Off-net scenario Receiving a FAX from PSTN Sending a FAX to PSTN To/From Application scenario, examples: SAP (on going) DMS (on going) Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 27 Communication Services– Fax Messaging Architecture 28 SIP i-SSW TI IMAP4/SMTP PoP BBN HTTP ISUP IVS SD TI ISUP H323 PSTN MGCP XML Fax Server i-SSW Poste Exchange Server SGU twp i-UDB VPN IP Poste . Fax Adapter (IAD) SAP twp DMS Utenti Fax Virtuale Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 OXE Utenti Fax OXE Utenti Fax IPCX Communication Services - Fax Outlook Integration Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 29 Communication Services – Audio,Video & Data Comm. 30 Through a single application a user can access different type of services: Audio conferencing: Conference participants can either use an ordinary telephone, audio conferencing terminal or a multimedia terminal in voice-only mode Data / Web conferencing adds the ability to exchange, transfer, and work on a range of documents and applications either as part of dedicated data conference, or as add-on to an audio or meeting Multimedia conferencing to communicate real-time with voice, video, and data Presence / IM to collaborate and work in a new way add dat a add video add voice add more participants Presence Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 IM Conference 04/03/2008 email Peter 31 Communication Services– A/V/D flows and architecture 1 – Organizzazione conferenza via http 2 – API (INVITE Video A + INVITE Video B+ INVITE Video C) 3 – 4 – 5 INVITE NumberA, Number B, Number C 6 – 7 – 8 INVITE Video A, Video B, Video MMIC C API (INVITE Video A, Video B, Video C) 2 HTTP 5 4 3 3 1 4 SIP i-SSW 5 CMM i-UDB 3 4 5 Poste VPN IP 6 7 3 End Point Video A 4 5 8 Poste VoIP VPN [email protected] Poste Data VPN Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 End Point Video B Communication Services – A/D conferencing features Ad-Hoc (or instant) Click on a phone or buddy icon Enter a phone number in a “call” box The system will call the user , then the person he’re calling. Click on scheduled call (see slide on scheduling later) One-time or recurring (similar to outlook recurrence) Reservationless (MeetMe) Be invited Click on a link which was emailed to him Call in to an audio conference for which he knows the access code Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 33 Communication Services – A/D conferencing M-party audio/data conference Reservationless/scheduled Conference Dialin/dialout to/from: OXE,PSTN, Mobile users Web conference control Touchtone conference control (##1, ##2, ##3 ,##4) Video MCU •MMIC •OXE •SoftSwitch audio data •BE Poste VPN MMIC+ OXE IPtouch Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 •MG PSTN OXE IPtouch PSTN1 Communication Services –– A/V/D conf features Seamless multipoint video Audio, IM, Web, and video conferencing combined within the same session One-click escalation from an audio call to audio + video One-click to launch a group video conferencing session Unified control External video MCU (required for 3 or more participants) controlled by MMIC User controls video—may hide, pause, or drop video during conference Use internal video client, third-party video software, or third-party vdc system Flexibility of the solution Peer-to-Peer (P2P) for SIP clients, no video MCU ports required Standards-based solution Deploy audio via telephone or VoIP Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 35 Communication Services –– A/V/D conf with MMIC video clients M-party a/v conf: MMIC1 starts a/v conf with MMIC2, MMIC3 and external PSTN phone MMIC1 invite MMIC2 and MMIC3 for audio+video and PSTN1 handset phone only for audio MMIC1 specifies to receive audio/video on his computer while MMIC2 and MMIC3 specifies to receive audio in the handset phone • MMIC1/MMIC2/MMIC3 hear and see each other exchanging audio/data with MMIC and exchanging video with the video MCU Video MCU •MMIC •OXE •SoftSwitch audio data •BE Poste VPN PSTN Video MMIC1 client with A/v/d on PC Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 •MG MMIC2 and MMIC3 clients with audio on Phone and d/v on PC PSTN1 Communication Services – A/V/D with Conference room video clients 36 M-party a/v conf: MMIC1 starts a/v conf with MMIC2 (Conf room) and PVX video client MMIC1 invite MMIC2 and MMIC3 • MMIC1 specifies to receive audio/video on his computer MMIC2 specifies to receive audio on phone and video on the external VSX H323/SIP Conf room MMIC3 specifies to receive audio on phone and video on the external PVX client MMIC1/MMIC2/MMIC3 hear and see each other exchanging audio/data with MMIC and exchanging video with the video MCU Video MCU •MMIC •OXE •SoftSwitch audio data Video •BE Poste VPN •MG PSTN PVX VSX MMIC1 with audio on OXE phone and v/d on internal video client Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 MMIC IPtouch Conf. Room: MMIC2 +VSX H323/SIP client+ IPTouch phone 04/03/2008 MMIC3 with audio on OXE phone and video on external PVX client PSTN1 Communication Services – Integration with MOC 1. Creating Reservationless Conference with MOC Client 3. Invite another MOC user to the conference Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 37 2. Starting one Conference with MOC Client 4. Inviting one OXE/PSTN Number to the Conference Communication Services –– Integration with MOC 38 Three-party LCS a/v conf: MOC1 starts a new conf and invites MOC2 and MOC 3 1. MOC1 join the audio conference and specifies to receive audio on his computer; video is activated on MGC 2. MOC1 invites buddy MOC2 and MOC2 join audio and video on computer 3. MOC1 invite buddy MOC3 and MOC3 opts to receive audio on telephone, video is activated on MCU • MOC1/MOC2/MOC3 hear and see each other exchanging audio with MMIC and exchanging video with the video MCU LCS Video MCU •MMIC •OXE •SoftSwitch audio video •BE Poste VPN PSTN data MOC1 Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 MOC2 04/03/2008 •MG MOC3 PSTN1 Communication Services - Automatic Voice Attendant 39 Automatic Attendant service is an Interactive Voice Response (IVR) System This service is identified by an E.164 public number: “Virtual Number” The internal users (on-net scenario) can use PNP(Private Numbering Plan) Each call is routed to “CMM-VN” application. A routing tree is configure to route the user to the “right” destinations Alternative destinations Voice Mail Any network Attendant Virtual number Site Virtual number Routing tree Automatic Attendant Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 Hunting group Virtual number MADN Virtual number 40 Benefits and Lesson Learned Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Benefits 41 9 Improved Communications Enhances Training and Supports Business Growth 9 User-friendly Conferencing Reduces Cost 9 Presence Improves Communication and Increases Productivity 9 Unified Solution Simplifies Communication and Reduces IT Costs Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 04/03/2008 Lesson Learned 42 9 Reach the goal and mantain a Business Critical quality level require: 9 Good business evolution needings understanding 9 Clear market architecture evolution vision 9 Consolidated Partnership with Market Leader Vendor 9 Critical Success Factors 9 Top management commitment 9 Intellectual property of the project 9 Keyword: projecting 9 Shared vision with partners Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Q&A Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008 Grazie Versione: 1.0. CIO –SRTLC-Progettazione Rete TLC 04/03/2008