Telephony evolution at CERN. Francisco Valentín Vinagrero Communications Systems Group IT Department CERN

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Laurence Clark
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2 Telephony evolution at CERN Francisco Valentín Vinagrero Communications Systems Group IT Department CERN 2

3 Index About CERN Network & Telecom services Current telephony network The TONE project 3

4 About me From Spain, living in Geneva Joined CERN in 2013 NGN/IMS core network roles previously Telefónica Int. Wholesales, Huawei, Vodafone 27/2/2015 4

5 CERN International organization Founded in 1954 by 12 countries 21 member states Amazing example of international collaboration Split between French and Swiss border Multiple sites in more than 60 Km 2 5

6 CERN Goal : Understand the universe: what is it made of and how it works Instruments : Accelerators and detectors 6

7 CERN Large Hadron Collider 27 Km of circumference 50 to 175 m under ground Energy :13 TeV 1200 supraconductor magnets, 24 Km of cryogenic pipes at 1,9 K A magnetic field 8 Tesla Upgrade finished on February

8 CERN ATLAS ALICE LHCb CMS Atlas Alice CMS LHCb 8

CERN People About 12,000 people at CERN ~2,400 CERN staff ~7000 Scientists from all

~2,000 Workers from external companies Involved in maintenance activities Two Nobel

Contribution to the Higgs discovery 2013 Nobel Prize, François Englert and Peter W.

9 CERN People About 12,000 people at CERN ~2,400 CERN staff ~7000 Scientists from all over the world Doctors, Fellows, Students, etc. ~2,000 Workers from external companies Involved in maintenance activities Two Nobel Prizes In 1984, Carlo Rubbia and Simon Van der Meer In 1992, Georges Charpak Contribution to the Higgs discovery 2013 Nobel Prize, François Englert and Peter W. Higgs The place where the WWW was born Tim CERN s Berners-Lee, The CERN DG, Dr. Control inventor Fabiola Room Gianotti of the WWW 9

10 Network services Different networks for administrative, physics and external traffic. More than 180 routers CERN Internet Exchange Point (CIXP) for ISP interconnection More than 400 starpoints 75k active user devices (BYOD) 10

11 Telecom & radio services Mobile services (2G to 4G) Single contract with a Swiss operator Closed VPN for 6K users 68 radio sites >50 km of leaky feeder cable Dedicated APN to connect to CERN intranet 11

12 Telecom & radio services Radio safety service 3 TETRA (Terrestrial Trunked Radio) Base Stations Coverage on all tunnels and surface sites Beacons for indoor localization 12

13 Current telephony network PABX in the core (TDM-IP hybrid) Multi-node (4) and multi-site (17) Double power supply (UPS) 12K fixed extensions 6K mobile subscriptions 3 levels of access rights: CERN, local area, worldwide Automated self-service: 11K changes last-year 13

14 Current telephony network Services S4B & video conference integration LCR with 4 operators (PRI) Switchboard and Service Desk call center. Critical and safety: Fire-Brigade call center / Red Phones Tetra interconnection 14

15 The TONE project Goals: Telephony Open-source Network Evolution Replace the PABX by a software-based solution Reduce hardware/license costs Avoid vendor lock-in Increase network agility Be able to support new WebRTC / SIP clients and remove all traditional phones. 15

16 Architecture SIP users FRONT-END FE-1 RE-1 BACK-END ENGINE PROVISIONING SERVER SBC DNS LB FE-2 RE-2 AIS LanDB FE-3 RE-3 PSTN FE-M RE-N MONITORING SERVER HEP 16

17 The TONE project Roles: Front-end - Dispatches to Asterisk servers based on availability zone. - Protects the core: ACLs, topology hiding, White/blacklists, Fail2Ban, htable. - TLS and WebSocket termination 17

18 The TONE project Roles: Back-End - Identifies calling user rights (context matching) - Resolve called user location and find cheapest (LCR) destination for external numbers - Realtime switch with MariaDB populated from provisioning server. - IVR service for Mobile VPN 18

19 The TONE project CERN s Agile infrastructure OpenStack as IaaS solution Puppet for configuration mgmt Foreman as lifecycle manager GitLab for repos and CI JIRA for issue tracking 19

20 Puppet recipe class kamailio( ) { $asterisk_ip = ' /0', $kamailio_dns_name = 'default', $asterisk_dns_name = 'default', $homer_dns_name = 'default', $node_type = 'default', # notify { "Hello Puppet on module kamailio": } $pkg_list=['gcc', 'flex', 'bison', 'mysql++-devel', 'zlib-devel', 'zlib-static', 'openssl-devel'] ensure_packages($pkg_list) teigi::secret{ 'kamailio_password': path => '/root/.kamailio_password', } 20

21 Puppet recipe exec { 'kamailio-sources': command => '/usr/bin/wget cwd => '/usr/src', creates => '/usr/src/kamailio-4.4.1_src.tar.gz', require => Package['wget'], } -> exec { 'unpack-kamailio':..... } -> exec { 'install-kamailio': provider => shell, command => "make cfg && echo 'include_modules= db_mysql sipcapture pv textops rtimer xlog sqlops htable sl siputils tls snmpstats' >> modules.lst && make all && make install && touch /etc/.kamailio_installed", cwd => '/usr/src/kamailio-4.4.1', creates => '/etc/.kamailio_installed', timeout => 0, require => Package[$pkg_list], } -> 21

22 Datacenter extension 22

23 Availability zones fe-geneva-tone.cern.ch fe-wigner-tone.cern.ch cern-meyrin-0058 cern-geneva-a cern-wigner-a FE-M RE-M DB FE-1 RE-1 DB FE-4 RE-4 DB Bare metal Long duration batteries FE-2 cern-geneva-b RE-2 DB FE-5 cern-wigner-b RE-5 DB cern-prevessin-0866 cern-geneva-c FE-P RE-P DB FE-3 RE-3 DB 23

24 The TONE project Status First service: IVR for Mobile VPN in July 2016 Next: external SIP connectivity & massive user migration Challenges SIP vs WebRTC clients? Integrate call center into the new architecture while keeping the same redundancy and criticality 24

25 Thank you! Questions? 25

Case study. Kamailio as IN SIP Application Server. Uri shacked Value Added Services Eng. Division Bezeq 17/4/2013

Case study. Kamailio as IN SIP Application Server. Uri shacked Value Added Services Eng. Division Bezeq 17/4/2013 Case study Kamailio as IN SIP Application Server Uri shacked Value Added Services Eng. Division Bezeq 1 17/4/2013 Goals: Show that open source implementation can be done on a very large scale. That kamailio