Living the SIMPLE SIP way SIP 2003 Paris, January 2003

Jörgen BjörknerVP Concept DevelopmentChairman SIP ForumJorgen.Bjorkner@hotsip.com

Time to move forward Sweden June 31 2002:

– 84% Mobile phone penetration– 63% Fixed line subscriptions incl. corporate lines

Why fixed phone line?– households ages 16-25

• 8% have only mobile phone• 26% broadband Internet access (cable TV,

ADSL, Ethernet to home) Internet Access pace maker

for fixed telephony Broadband access revenue

22% of fixed phoneaccess revenue

Source:Swedish Post and Telecom Agencywww.pts.se (available in English)

Will SIP Survive?

VoIP = Fixed Phone = Dead NOT Dead = Alive Internet services = Alive SIP = Internet Service AND

NOT VoIP = 2*Alive

SIP Internet Communication services

Mobility– Access service from anything anywhere on the

Internet Presence

– Enabler of communication Instant messaging Voice

– Better than PSTN quality Video Collaboration Interactive Sessions

SIP network cookbook

DNSServerEntry

SIPServer

PresenceServer

MobilePhone

PC

TypicalUser

Internet

PSTN/GSM

InternetAccess

SIPPhone

Soft phone

VoiceGateway

SMSGateway

Hosted Services

Real examples

My personal SIP usage the last 2 years...

Communication tools

PC with SIP & SIMPLE clientGSM PhoneMail client

SIP Phone

Incoming call to fixed phone number-forking

DNSServerEntry

SIPServer

PresenceServer

MobilePhone

PC

TypicalUser

Internet

PSTN/GSM

InternetAccess

SIPPhone

Soft phone

VoiceGateway

SMSGateway

+46 8 454 05 05

Incoming call

Presence based call routing

DNSServerEntry

SIPServer

PresenceServer

Internet

VoiceGateway

VoiceMail

Place a call

Security and NAT traversal

SIP aware NAT/Firewall/ADSL modem Client implements SIP NAT traversal

extensions and STUN Need of media proxies to deal with

symmetrical NATs– TURN like approach

Incoming instant messages

Presence based routing– To PC if present– To Mobile if not present on PC

QoS Experience

No problems experienced over Internet Access link may be bottleneck IP-IP calls better than PSTN!

– 8 kHz voice bandwidth compared to PSTN 3 kHz

Conclusion It is not about fixed voice line replication SIP will survive

– Works today SIP Communication services makes sense to

bundle with broadband Internet access– New revenue stream

Similar set up as email service for service provider

SIP voice not degraded by peer-peer movie congesters in networks without QoS

Gives mobility access to multimedia communication services similar to email access

Thank You!

Any questions?

Jörgen BjörknerVP Concept DevelopmentHotsipWeb: www.hotsip.comSip/mail: jorgen.bjorkner@hotsip.com

-12StockholmFebruary 24-28, 2003Hosted by Hotsip

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