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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 [email protected]

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

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Beyond POTS Replacement Is SIP Trunking a step on that route?

© 2009 Intertex Data AB 1

Prepared for: INTERNET TELEPHONY ConferenceIngate’s SIP Trunking WorkshopLos Angeles, September 2009

By: Karl Erik Ståhl President & CEO Intertex Data ABChairman Ingate Systems [email protected]

SIP Trunking: Can it be More Than a New Connection?

PSTNIP CloudSIP Trunking

Provider

IP-PBXFirewall

Ingate SIParator®

TDM Trunk

GW

Data & VoIP LAN

SIP System

SIP Trunk

GW

and More Than About Interoperability

SIP Trunk

Ingate SIParator®

-or-Ingate Firewall

3ComAastraDigium/AsteriskAvayaCisco Call ManagerEricsson MX-OneFonalityInnovaphoneInteractive IntelligenceIwatsuMicrosoftMitelNEC / SphereNortelObjectworldPanasonicPingtelSamsungSERShoretelSiemensSIP-GearSwyxMore in pipeline....

360 NetworksAirespringAT&TBandTel Bandwidth.com BroadvoxCbeyond CellipCordia CorporationExcel SwitchingGammaGlobal Crossing IP-Only Juma NetworksLevel 3

NetlogicNexvortexNuvoxO1 PaetecPrimus RNK TelecomTDC Tele2TeliaToplinkVoEX VoIP UnlimitedVoxboneMore in pipeline.....

Carrier EquipmentAcme PacketBroadsoftNexPoint

SonusSylantroSER

Compliant with

Service providers IP-PBXs

See: www.siptrunk.org

© 2009 Intertex Data AB 4

Installation Wizard

and More Than Easy Deployment

© 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!

© 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 ClientWiFi Mobile

And we have a new standard: SIP

And there is more than Voice: Presence, IM, Video, etc.

© 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.

© 2009 Intertex Data AB 8

In the enterprise and at home

InternetInternet

and Talk About Devices with SIP Capabilities

Soon hundreds of million of SIP multimedia terminals in our pockets!

© 2009 Intertex Data AB 9

Europe

US

VPNTunnel

IP PBX

PBX

But have We Seen Much More than POTSoIP?

PSTN

Gateway

Gateway

TollBypass

IP PBX

Gateway

SoftSwitch

Gateway

Voice overBroadband

Very seldom VoIP connectivity between the VoIP IP clouds!

Most broadband VoIP providers still run calls between each other over the PSTN!

Are we stuckwith old POTStelephony over new wires?

© 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?

© 2009 Intertex Data AB 11

There is a Severe Infrastructure Problem…

LAN

LAN

FW FW

FWFW

InternetInternet

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.

© 2009 Intertex Data AB 12

Why are NATs and Firewalls Such Obstacle

Typical Internet protocol (SMTP, HTTP…)

Internet

HOSTSERVER

SIP (and H.323…) connects Person-to-Person

Internet

PERSONPERSON

SIP is the Protocol for IP Communication Person-to-Person,

BUT IT DOES NOT REACH THE USER’s!

Locate the person Set up a session+ Open real time media streams+

Data & VoIP LAN

Soft Clients and Multimedia Terminals

PSTNPublic

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

© 2009 Intertex Data AB 14

And Hosted VoIP Suffers from the Same Problem

InternetInternet

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!

© 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

InternetInternet

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.)

IMSIMS

© 2009 Intertex Data AB 16

PSTNPublic

Internet

SIP Trunking Provider

GWSIP 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 TimeEnable Going Beyond POTS Replication

© 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

InternetUS, Los Angeles

INGATE LAN

ingate.com

THIS LAN, Internet Telephony Workshop

[email protected]

von.sipnr.org

My broadband at home

[email protected] [email protected]

cell

PSTN

INTERTEX LAN

intertex.se

Sweden

3G

[email protected]

Japan

[email protected]

PSTN

SIP/PSTNGateway

SIP Trunk Provider 1

PSTNSIP/PSTNGateway

SIP Trunk Provider 2

© 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

INTERTEX LAN

intertex.se

InternetUS, Los Angeles

INGATE LAN

ingate.com

THIS LAN, Internet Telephony Workshop

[email protected]

von.sipnr.org

My broadband at home

PSTN

SIP/PSTNGateway

SIP Trunk Provider 1

PSTNSIP/PSTNGateway

SIP Trunk Provider 2

([email protected]) [email protected]

cell

PSTN

Sweden

3G

[email protected]

Japan

[email protected]

PBX Mobility with SIP Trunking (demo)PSTN +46 8 12345629 my direct numbermarta 29 = my extension numbercalle 28 (marta)PSTN +46 8 12345600 Intertex main ext 29, 25s leave Voice Mailcalle mobile in the hallVoice Mail comes via email

© 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

INTERTEX LAN

intertex.se

InternetUS, Los Angeles

INGATE LAN

ingate.com

THIS LAN, Internet Telephony Workshop

[email protected]

von.sipnr.org

My broadband at home

PSTN

SIP/PSTNGateway

SIP Trunk Provider 1

PSTNSIP/PSTNGateway

SIP Trunk Provider 2

[email protected] ([email protected])

cell

PSTN

Sweden

3G

[email protected]

Japan

[email protected]

…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 [email protected] [email protected] (listen + video)• Wide band codec: “S” is not “F” anymore!• VideoMedia goes the shortest way (just to the local switch here)and we saw global SIP calls – not restricted to own domain

© 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 [email protected] Not user friendly at all. For internal use only.

We want a real SIP address: [email protected] Just like our email addresses

Let us have both: +46 8 1234567 = [email protected]!- Service providers can do it- Here the Intertex and Ingate products do it!

INTERTEX LAN

intertex.se

InternetUS, Los Angeles

INGATE LAN

ingate.com

THIS LAN, Internet Telephony Workshop

[email protected]

von.sipnr.org

My broadband at home

PSTN

SIP/PSTNGateway

SIP Trunk Provider 1

PSTNSIP/PSTNGateway

SIP Trunk Provider 2

[email protected] [email protected]

cell

PSTN

Sweden

3G

[email protected]

Japan

[email protected]

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)

© 2009 Intertex Data AB 25

IPIP

PSTN

ENUM – Using Phone Numbers but Staying on IP

IPIP

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 [email protected]

2) ENUM lookup: Is there a SIP address for +46812345629?Ask DNS: 9.2.6.5.4.3.2.1.8.6.4.e164.arpaYeah try sip:[email protected]

1) Dial Phone Number 08 12345629

3) Place the call directly to: sip:[email protected]

© 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)?

© 2009 Intertex Data AB 27

Workaround Methods have their Limitations…

IMSIMS

VoIPVoIP

IMSIMS

LAN

LAN

FW FW

FWFW

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 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!

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!

© 2009 Intertex Data AB 28

SIP Capable Firewalls

Ingate Systems [email protected] Farley Road HollisNH 03049United StatesPh: +1 (603) 883-6569Tel sv: +46 8 6007750

Intertex Data [email protected] 45 SE-174 44 SundbybergSwedensip:[email protected]: +46 8 6282828

See us at ITEXPO Room 502A!