Voice over IP at the Portuguese NREN

Transcription

1 Voice over IP at the Portuguese NREN Instituto Superior Técnico Lisboa - March, sip:voip@fccn.pt 1 FCCN FCCN runs and manages the Portuguese NREN, TLD.pt and Portuguese IX; More than 100 Higher Education and Research institutions More than public schools Own fiber between Braga and Lisbon Two times 2.5 Gbps to Madrid and London 2

2 Agenda Background Methodology Status Challenges 3 Agenda Background Background Methodology Status Challenges 4

3 Background 2004: FCCN starts an internal study on VoIP solutions and technologies; 04/2005: VoIP across RCTS working group setup; 06/2005: 1st national meeting on VoIP 12/2005: 2nd national meeting on VoIP End of 2005: 55 participants from 20 institutions End of 2005: VoIP survey 5 WG participants University of Lisbon Technical University of Lisbon Polytechnic Institute of Bragança Polytechnic Institute of Lisbon ISCTE Polytechnic Institute of Guarda Lusíada University University UTAD University of Coimbra University of Minho 6

4 Instituições inscritas University of Oporto University of Évora INESC INETI FCT POSC MCTES UMIC Ciência Viva 7 Agenda Methodology Background Methodology Status Challenges 8

5 Main goals Foster VoIP technology inside RCTS connected organizations; Evaluate commercial offer (vendors and operators) regarding VoIP; Study and design voice over IP solutions across RCTS (interoperability); Study and design addressing solutions; Evaluate technical and financial impact on legacy to VoIP transition; 9 Pre-requisites Use of standards (interoperability) Inter-working with existing infrastrusture NREN traffic flows across RCTS Operator independance (data an voice) Mobility of users Easiness of use Both hardphones e softphones Support for thousands of users (scalability) 10

6 Methodology Vendor and operator Testbed Interoperability, technical documentation and cookbooks VoIP Survey PBX, Contacts, Traffic, LAN, Services, On-going projects Working group participation End of graduation work, Master thesis Share of information and experience Dissemination of results A good case study 11 Vendor testbed e-u ADSL Internet GS IP-FCCN-PBX BRI PBX BRI-FCCN MEX BRI-LEGACY-PSTN 12

7 13 Vendor testbed VoIP elements and solutions evaluation Level of compliance with the standards Interoperability with other solutions Interconnection with legacy PBX End-to-end services across RCTS Firewalls transversing techniques Security NAT and private addresses Cookbooks published 14

8 VoIP survey Sent late 2005 to all institutions connected to RCTS Format (excel) Central PBX (sheet 1) Informatics centre (sheet 2) Management (sheet 3) Traffic details (sheet 4) Who should answer Informatics centre Voice infrastructure Marketing meetings all over 15 Agenda Status Background Methodology Status Challenges 16

9 Status (LAN testing) Local area solutions 11 institutions testing VoIP 4 institutions with production tests (real users) 5 institutions with VoIP gateways Polytechnic Institute of Bragança Less than 10 users trial Voic and Web integration Late stage of legacy PBX integration 17 Polytechnic Institute of Lisbon More than 100 users trial AAI integration Late stage of legacy PBX integration University of Lisbon PBX IP upgrade trial Wide area tests with FCCN 18

10 Technical University of Lisbon Tests with Asterisk and SER University of Coimbra Tests with SER Next step will be LDAP integration University of Aveiro Trial inside informatics unit VoIP only technical helpdesk 19 Status (survey) Marketing meetings Oporto (40 presencies) Oporto Unversity, Polytechnic Institute of Oporto, University of Minho Lisbon (50 presencies) University of Lisbon, University Nova of Lisbon, ISCTE, Polytechnic Institute of Lisbon Answers UP, UE, UL, IPB, UM 20

11 Status (testbed) Testbed setup ended Testbed charter published Ongoing tests 3Com Cisco Systems Alcatel Planned tests Siemens (mid march) 21 Âmbito # Teste 3Com Cisco Alcatel MEX 1 Chamadas entre telefones do fabricante, na rede local. 2 Telefone em rede externa. Testes básicos 3 Telefone atrás de ADSL (com NAT). 4 Servidor aceita telefones H Servidor aceita telefones SIP Servidor pode-se ligar por RDIS ao antigo PBX RDIS 6 Servidor pode-se ligar por RDIS ao MEX 7 Trunking 8 Servidor pode-se ligar por IP ao MEX IP 9 Servidor pode-se ligar por IP ao MEX (através de uma firewall) Teste Trunking IP a propôr pelo fabricante 10 22

12 Ambito # Teste 3Com Cisco Alcatel MEX 11 Servidor aceita telefone H.323 a partir de rede externa Testes avançados 12 Servidor aceita telefone SIP a partir de rede externa 13 Servidor permite a comunicação entre telefones IP e H Testes Avançados a propôr pelo fabricante 15 Suporta endereçamento dinâmico E-164 (ENUM) Endereçamento Dinâmico 16 Suporta endereçamento dinâmico com URIs 17 Testes de endereçamento dinâmico a propôr pelo fabricante 18 Suporta telefones da marca registados na rede e-u 19 Suporta telefones SIP registados na rede e-u (PDA, Laptop) 23 Âmbito # Teste 3Com Cisco Alcatel MEX IPV6 Trunking Terminais Implementa IPv6 ao nível do trunking Implementa IPv6 ao nível dos telefones Terminais 22 É possível ligar os telefones ao MEX TOTAL Número de testes superados 24

13 Status (operators) Get to know VoIP products and services; Design migration or co-existence approaches; Design traffic forwarding mechanisms; Get to know addressing constraints and redundancy solutions; Meeting with operators Colt Netcall ONI Portugal Telecom 25 Agenda Challenges Background Methodology Status Challenges 26

14 TDM vs. VoIP Circuit switched network Liable Predictable Easy to manage Easy to own Packet switched network Unpredictable Independent Have you ever tried to own a cat? 27 Technical Addressing, Interconnection Survivability Ex. 120 inline power switches, 20 Min. Emergency numbers Special end-points Elevators, emergency phones, Faxes, POS Migration process Big campus deployment Security, Firewalling, NAT QoS Model 28

15 Organization New paradigm (driver: Operator vs. User) Open Systems instead of proprietary monolithic. Yet another Internet service. Integrated services (Ubiquity, Mobility,...) Human resources training Migration process Management sponsorship! 29 Mentality Change drivers 48% need to integrate between campus 47% total cost savings Worst fears 57% network avalability 52% VoIP avalability 49% staff know-how 41% security 11% no fear Source: UKERNA UK NREN 30

16 Critical success factors Lack of awareness and comunication between informatics unit and voice infrastructure responsible No sponsorship in some organizations Lack of human resources 31 Agenda Thank you! Background Methodology Status Challenges 32