1. Beyond POTS Replacement Is SIP Trunking a step on that route? © 2009 Intertex Data AB 1 Prepared for:INTERNET TELEPHONY Conference Ingate’s SIP Trunking Workshop Los Angeles, September 2009 By: Karl Erik Ståhl President & CEO Intertex Data AB Chairman Ingate Systems AB karl.stahl@intertex.se

2. SIP Trunking: Can it be More Than a New Connection? PSTN IP Cloud SIP Trunking Provider IP-PBX Firewall Ingate SIParator® TDM Trunk GW Data & VoIP LAN SIP System SIP Trunk GW

3. and More Than About Interoperability SIP Trunk Ingate SIParator ® -or- Ingate Firewall  3Com  Aastra  Digium/Asterisk  Avaya  Cisco Call Manager  Ericsson MX-One  Fonality  Innovaphone  Interactive Intelligence  Iwatsu  Microsoft  Mitel  NEC / Sphere  Nortel  Objectworld  Panasonic  Pingtel  Samsung  SER  Shoretel  Siemens  SIP-Gear  Swyx More in pipeline....  360 Networks  Airespring  AT&T  BandTel  Bandwidth.com  Broadvox  Cbeyond  Cellip  Cordia Corporation  Excel Switching  Gamma  Global Crossing  IP-Only  Juma Networks  Level 3  Netlogic  Nexvortex  Nuvox  O1  Paetec  Primus  RNK Telecom  TDC  Tele2  Telia  Toplink  VoEX  VoIP Unlimited  Voxbone More in pipeline..... Carrier Equipment  Acme Packet  Broadsoft  NexPoint  Sonus  Sylantro  SER Compliant with Service providersIP-PBXs See: www.siptrunk.org

4. © 2009 Intertex Data AB 4 Installation Wizard and More Than Easy Deployment

5. © 2009 Intertex Data AB 5 Benefits of SIP Trunking  Monthly cost savings  Single network for all communications  Lower cost of Moves, Adds and Changes  Disaster Recovery / Business Continuity  User provisioning  Steps of going beyond POTS replication – Unified Communication Mobility – Remote workers Multimedia - Video, IM, Presence, etc. Real SIP address – like email address WiFi mobile phone communication Let’s talk about this now!

6. © 2009 Intertex Data AB 6 There is Potential to Go Beyond! RJ45 LAN Intranet Internet  Now we have a new global network: The IP Networks RJ11  POTS and PSTN have been there for 100 years Black Phone IP Phone 3.5 kHz isn’t HiFi, but MOS is 5! Soft Client WiFi Mobile  And we have a new standard: SIP  And there is more than Voice: Presence, IM, Video, etc.

7. © 2009 Intertex Data AB 7 Lots of Talk About Multimedia, Unified Communication etc. “…jag känner ingen tvekan inför riktningen. Vi går från rösttelefoni till full multimedia.” Visionen är att alla apparater så småningom kopplas ihop. Mobilen kommunicerar lika lätt med datorn som som med musikanläggningen. Internet solutions… Multimedia… Artikel hämtad från NyTekniks webbtjänst. Publicerad: 2006-11-22 Nu vill Svanberg in i vardagsrummen "Den nya teve-världen" var en av rubrikerna. "Det uppkopplade hemmet" var ett annat begrepp som upprepades flitigt under konferensen. - Vi ser en potential i hemmet, och vill bli en del av den miljön, sa Carl- Henric Svanberg i Tokyo. Teve, dvd, spelkonsol och dator väntas snart kunna kommunicera i hemmanätet via standarder som tas fram av Dlna - Digital Living Network Alliance - där Sony, Nokia, Microsoft, Intel och flera andra hemelektronikjättar deltar. Samtidigt är IMS standarden som telekomleverantörer, som Ericsson, använder för tjänsterna i de nya telenäten.

8. © 2009 Intertex Data AB 8 In the enterprise and at home Internet and Talk About Devices with SIP Capabilities Soon hundreds of million of SIP multimedia terminals in our pockets!

9. © 2009 Intertex Data AB 9 Europe US VPN Tunnel IP PBX PBX But have We Seen Much More than POTSoIP? PSTN Gateway Toll Bypass IP PBX Gateway Soft Switch Gateway Voice over Broadband Very seldom VoIP connectivity between the VoIP IP clouds! Most broadband VoIP providers still run calls between each other over the PSTN! Are we stuck with old POTS telephony over new wires?

10. © 2009 Intertex Data AB 10 HTTP created the Web SMTP created Email SIP can create global Live IP Person-to-Person Communication! And When Will We See the Next Step of Internet Usage?

11. © 2009 Intertex Data AB 11 There is a Severe Infrastructure Problem… LAN FW Internet email web SIP does not traverse the common NATs and firewalls protecting the LANs . IMS (SIP based) IMS (SIP based) What about SIP for Live Person-to-Person Communication? A common Network and common Protocols changed our lives: SMTP gave us global email! HTTP gave us the Web! NATs and Firewalls were designed to allow such protocols.

12. © 2009 Intertex Data AB 12 Why are NATs and Firewalls Such Obstacle Typical Internet protocol (SMTP, HTTP…) Internet HOST SERVER SIP (and H.323…) connects Person-to-Person Internet PERSON SIP is the Protocol for IP Communication Person-to-Person, BUT IT DOES NOT REACH THE USER’s! Locate the personSet up a session + Open real time media streams +

13. Data & VoIP LAN Soft Clients and Multimedia Terminals PSTN Public Internet SIP Trunking Provider GW IP-PBX Firewall SIP Trunking does not pass a SIP unaware NAT/firewall! …and the firewall cannot be opened enough to make it work because of NAT. SIP System And that is a Main Problem when SIP Trunking IP-PBXs

14. © 2009 Intertex Data AB 14 And Hosted VoIP Suffers from the Same Problem Internet The 5060 SIP-port is just grabbed on the outside to the FXS ports! (And lower level SIP ALGs often cause problems and do not handle more than basic scenarios.) Telephone ports (FXS) on the CPE is a popular way to deploy IP telephony. By logically placing the SIP clients on the outside of the NAT/Firewall, unreliable work-around methods like STUN, TURN and ICE become unnecessary. However, this only gives POTS replication, often even stopping general SIP based services! FXS ports (for plugging in analog phones) IS POTS replication!

15. © 2009 Intertex Data AB 15 No battery draining of WiFi mobile phones, otherwise caused by keep-alive packets* inhibiting sleep mode. * Work-around methods for SIP NAT-traversal like STUN, TURN, ICE and Far End NAT Traversal use frequent keep-alive packets to keep holes in the NAT/Firewall open. Let’s Use Real SIP Capable NAT/Router/Firewalls Internet  Problems solved where they occur  No special requirements on the SIP Client – Just standard SIP  Wired or wireless SIP clients (phones, soft clients, PDAs) SIP Intertex and Ingate CPEs have a SIP Proxy based Firewall/NAT  General, can handle complex call scenarios and all SIP services  Additional functionality available (PBX like functionality, ENUM, etc.) IMS

16. © 2009 Intertex Data AB 16 PSTN Public Internet SIP Trunking Provider GW SIP System Data & VoIP LAN IP-PBX Demarcation point of service and bringing SIP communication to the LAN Soft Clients and Multimedia Terminals Intertex IX78 Remote Users Let’s Fix the SIP Trunking and at the Same Time Enable Going Beyond POTS Replication

17. © 2009 Intertex Data AB 17 And Step in to the World of Global Live IP Communication Fix the NATs and firewalls and there is no reason to be caught in POTSoIPs islands! SIP connects globally and has lots of applications. It’s not magic – It’s just the SIP standard! VoIP++ Global IP Connectivity All SIP Services

18. Internet US, Los Angeles INGATE LAN ingate.com THIS LAN, Internet Telephony Workshop calle@intertex.se von.sipnr.org My broadband at home sophie@ingate.com marta@intertex.se cell PSTN INTERTEX LAN intertex.se Sweden 3G stefan@ingate.com Japan kamilla@von.sipnr.org PSTN SIP/PSTN Gateway SIP Trunk Provider 1 PSTN SIP/PSTN Gateway SIP Trunk Provider 2

19. © 2009 Intertex Data AB 19 Beyond POTS: Mobility, Multimedia and Numbers We certainly want our home workers connected to the company PBX And the same goes for our road warriors -at the hotel -at public WiFi All should have all PBX services -Reached by extension number or DID -Place PSTN calls (displaying correct CallerID) -Voice mail, conferencing etc. -Presence, IM, video if supported by the PBX

20. INTERTEX LAN intertex.se Internet US, Los Angeles INGATE LAN ingate.com THIS LAN, Internet Telephony Workshop calle@intertex.se von.sipnr.org My broadband at home PSTN SIP/PSTN Gateway SIP Trunk Provider 1 PSTN SIP/PSTN Gateway SIP Trunk Provider 2 (sophie@ingate.com) marta@intertex.se cell PSTN Sweden 3G stefan@ingate.com Japan kamilla@von.sipnr.org PBX Mobility with SIP Trunking (demo) PSTN  +46 8 12345629 my direct number marta  29 = my extension number calle  28 (marta) PSTN  +46 8 12345600 Intertex main  ext 29, 25s leave Voice Mail calle  mobile in the hall Voice Mail comes via email

21. © 2009 Intertex Data AB 21 Beyond POTS: Mobility, Multimedia and Numbers So is IM (Instant Messaging) Laptops have cameras and good screens, so why not video? -Not user friendly at all. For internal use only. And voice can actually be better than 3kHz AM-radio quality! -Who said MOS score 5 was perfect? Hardly HiFi? Presence is really useful

22. INTERTEX LAN intertex.se Internet US, Los Angeles INGATE LAN ingate.com THIS LAN, Internet Telephony Workshop calle@intertex.se von.sipnr.org My broadband at home PSTN SIP/PSTN Gateway SIP Trunk Provider 1 PSTN SIP/PSTN Gateway SIP Trunk Provider 2 sophie@ingate.com (marta@intertex.se) cell PSTN Sweden 3G stefan@ingate.com Japan kamilla@von.sipnr.org …and other SIP based applications (demo) Presence, Instant Messaging (is kamilla or other on-line?) Not restricted to own domain intertex.se, here also ingate.com and von.sipnr.org calle@intertex.se  sophie@ingate.com (listen + video) Wide band codec: “S” is not “F” anymore! Video Media goes the shortest way (just to the local switch here) and we saw global SIP calls – not restricted to own domain

23. © 2009 Intertex Data AB 23 Beyond POTS: Mobility, Multimedia and Numbers Telephone numbers WILL be around for long -We are simple too used to E.164 numbers and everyone has one -But they are really not particularly user friendly… -Would email have been a success if we had used our fax numbers? Operators provide SIP names like u081234567@sip14.provider.se -Not user friendly at all. For internal use only. We want a real SIP address: john.brown@smartco.com -Just like our email addresses Let us have both: +46 8 1234567 = john.brown@smartco.com! -Service providers can do it -Here the Intertex and Ingate products do it!

24. INTERTEX LAN intertex.se Internet US, Los Angeles INGATE LAN ingate.com THIS LAN, Internet Telephony Workshop calle@intertex.se von.sipnr.org My broadband at home PSTN SIP/PSTN Gateway SIP Trunk Provider 1 PSTN SIP/PSTN Gateway SIP Trunk Provider 2 sophie@ingate.com 0845004195@ipkund.rixtelecom.se cell PSTN Sweden 3G stefan@ingate.com Japan kamilla@von.sipnr.org Telephone numbers and SIP addresses (demo) Can we do global SIP calls over the SIP trunk? It is up to the operators! E.g. Telia routes real SIP calls and don’t steal the media (even though they are on managed VoIP cloud) 0845004195  calle using 08 12345629 (view sophie’s screen) (IP  PSTN ------> PSTN  IP  only POTS voice) sophie  calle using 08 12345629 (ENUM: IP  IP  quick, wide band codec, video)

25. © 2009 Intertex Data AB 25 IP PSTN ENUM – Using Phone Numbers but Staying on IP IP  Not only for PSTN by-pass, but also for better voice and multimedia  Clients, Intertexes/Ingates, or service providers can use ENUM +46 8 12345629 calle@intertex.se 2) ENUM lookup: Is there a SIP address for +46812345629? Ask DNS: 9.2.6.5.4.3.2.1.8.6.4.e164.arpa Yeah try sip:calle@intertex.se 1) Dial Phone Number 08 12345629 3) Place the call directly to: sip:calle@intertex.se

26. © 2009 Intertex Data AB 26  STUN, TURN, ICE (client based) and FENT (typically done by SBCs) are alternative methods for working around non SIP capable NATs and Firewalls  Use them if required, e.g. for road warriors behind well behaved NATs with a not too tight firewalls  Ingate and Intertex can enable FENT to help SIP remote clients behind non SIP aware NATs and firewalls, e.g. Remote Users  But for SIP trunking and global and general SIP communication, you need something reliable and secure that also handles real complex call scenarios What about STUN, TURN, ICE and Far End Nat Traversal (FENT)?

27. © 2009 Intertex Data AB 27 Workaround Methods have their Limitations… IMS VoIP IMS LAN FW RELIABILITY: STUN, TURN, ICE and Far End NAT Traversal (FENT) rely on guesswork of NAT/Firewall behavior – Thus never fully reliable. Unsuccessful calls – especially in complex scenarios, one way media, timeout during calls etc. etc..  Internet Keep-alive packets inhibit sleep mode, thus draining batteries of WiFi devices.  STUN TURN SECURITY POLICY: These workarounds require Firewalls to have large port ranges open from inside. FW is no longer in control of what is allowed into the LAN! STUN, TURN and ICE delegate control to the Client and can also be used for evil protocols. FENT delegates control to the Operator. No control of QoS– where it is most important! SECURITY AND STABILITY: STUN, TURN, ICE are Client based, FENT is operator based (part of SBC). Both rely on punching holes in the Firewall and keeping NAT bindings open. ISSUES: And with general SIP on several WAN-pipes: No chance!

28. © 2009 Intertex Data AB 28 SIP Capable Firewalls Ingate Systems Inc. www.ingate.com Info@ingate.com 7 Farley Road Hollis NH 03049 United States Ph: +1 (603) 883-6569 Tel sv: +46 8 6007750 Intertex Data AB www.intertex.se info@intertex.se Rissneleden 45 SE-174 44 Sundbyberg Sweden sip:reception@intertex.se Tel: +46 8 6282828 See us at ITEXPO Room 502A!