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IP Telephony - ITU · ITU Workshop on IP Telephony, Geneva, June 2000 IP Telephony ... Voice over...

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s 1 ITU Workshop on IP Telephony, Geneva, June 2000 IP Telephony Helmut Schink IP Telephony Helmut Schink [email protected] +49 89 722 44523 Siemens AG ICN M CS 21 81359 München Hofmannstr. 51 s 2 ITU Workshop on IP Telephony, Geneva, June 2000 Content 1) Drivers 2) Principles 3) Application 4) Challenges 5) Standards 6) Current Product 7) Closing
Transcript

s

1ITU Workshop on IP Telephony, Geneva, June 2000

IP Telephony Helmut Schink

IP Telephony Helmut Schink

[email protected]+49 89 722 44523Siemens AGICN M CS 2181359 MünchenHofmannstr. 51

s

2ITU Workshop on IP Telephony, Geneva, June 2000

Content

1) Drivers

2) Principles

3) Application

4) Challenges

5) Standards

6) Current Product

7) Closing

s

3ITU Workshop on IP Telephony, Geneva, June 2000

Driver for tomorrow’s communicationBitrate growth in data networks is higher

ð The internet becomes a second universal network besidesthe voice network.

ð The internet becomes a second universal network besidesthe voice network.

Source: ICN M CM, ITU, ISOC

Total average bitrate

Year1985

1

Gbit/s

1990 1995 2000 2005 2010 2015 2020

Telephone total

106

103

10-3

10-6

Internet

Source: ICN M CM, ITU, ISOC

Total average bitrate

Year1985

1

Gbit/s

1990 1995 2000 2005 2010 2015 2020

Telephone totalTelephone total

106

103

10-3

10-6

Internet

s

4ITU Workshop on IP Telephony, Geneva, June 2000

Driver for tomorrow’s communicationVoice stays the main revenue generator

ð Voice service is lucrative for voice and data networkproviders

ð Voice service is lucrative for voice and data networkproviders

0 < 1%

5 %

10 %

1998 2003 2005

3%

7%

Voice over IP Market Share *)

*) VoIP global call minutes as percentage of VoTDM global call minutes.The Impact on Telco Services and Revenues, OVUM Ltd. 1998

0 < 1%

5 %

10 %

1998 2003 2005

3%

7%

< 1%

5 %

10 %

1998 2003 2005

3%

7%

Voice over IP Market Share *)

*) VoIP global call minutes as percentage of VoTDM global call minutes.The Impact on Telco Services and Revenues, OVUM Ltd. 1998

29%

20%

25%

050

100150200250300350400

1993 1998 2003Data & VASCATVVoice

244

334

406Revenues*) in Billion DM

*) Revenue for Telecom Services in Western Europe Source: ICN M CM

29%

20%

25%

050

100150200250300350400

1993 1998 2003Data & VASCATVVoice

244

334

406Revenues*) in Billion DM

*) Revenue for Telecom Services in Western Europe Source: ICN M CM

s

5ITU Workshop on IP Telephony, Geneva, June 2000

Driver for tomorrow’s communicationThe competition will be decided on services and price

With New Servicesn conquer new marketsn differentiate from competitionn generate additonal

revenuesTraditional Servicesn offered by all providersn increased price competition

ð The key to voice/data success lies in advanced multimediaservices and applications

ð The key to voice/data success lies in advanced multimediaservices and applications

Services are the key to voice/data success. They ...

n save time and money n increase convenience for the end user n generate additional call minutes n are directly marketablen create direct revenues n promote subscriber loyalty n provide a competitive edge in

deregulated markets

13% 17% 30%45%

1990 1995 2000 2005

Revenues p. Y. (in Bill. ECU) *

87%

90

83% 70% 55%

20%

0

40%

60%

80%

100%110 180 280

* Revenues in Europe Source: ICN M CM

s

6ITU Workshop on IP Telephony, Geneva, June 2000

Operators’ Motivation to Deploy VoIPServices

Offering new and advanced services

Cost savings through efficiency of unified network

Cost savings through more bandwidth efficiency

Growing competitive pressure through VoIP

Avoidance of interconnection cost

Market pull from business customers

VoIP as an additional, low-cost service

Offloading peak traffic from the trad. voice n/w

Market pull from residential customers

Improved customer retention (for ISPs only)

Charge usage-based instead of flat rate (for ISPs only)

Operators’ Rating of Drivers for Voice over IPaverage of all surveyed operators

1 63 5

Interview basis: 16

very important not important42

Offering new and advanced services

Cost savings through efficiency of unified network

Cost savings through more bandwidth efficiency

Growing competitive pressure through VoIP

Avoidance of interconnection cost

Market pull from business customers

VoIP as an additional, low-cost service

Offloading peak traffic from the trad. voice n/w

Market pull from residential customers

Improved customer retention (for ISPs only)

Charge usage-based instead of flat rate (for ISPs only)

Operators’ Rating of Drivers for Voice over IPaverage of all surveyed operators

1 63 5

Interview basis: 16

very important not important42

s

7ITU Workshop on IP Telephony, Geneva, June 2000

Expected GW FeaturesWhich features do operators expect ?

(multiple votes per operator possible)

needed now needed in 2 years

0 4 8 12Number of votes

SS7Single-stage-dialingISUP transparency

Automatic Fax handlingIP QoS features

Automatic Modem handlingAutomatic DTMF handling

Availability 99.999%Line Redundancy

PSTN fallback incorporate in VoIP equipmentIVR (interactive voice response)

CO environmental conditionsCO rack integration (size)

Speech recognition (-> prepaid account)CO power supply

Additional voice compression standards

15 a

nsw

ers

tota

l

Co

nn

ecti

vity

wit

h P

ST

N

needed now needed in 2 years

0 4 8 12Number of votes

SS7Single-stage-dialingISUP transparency

Automatic Fax handlingIP QoS features

Automatic Modem handlingAutomatic DTMF handling

Availability 99.999%Line Redundancy

PSTN fallback incorporate in VoIP equipmentIVR (interactive voice response)

CO environmental conditionsCO rack integration (size)

Speech recognition (-> prepaid account)CO power supply

Additional voice compression standards

15 a

nsw

ers

tota

l

Co

nn

ecti

vity

wit

h P

ST

N

s

8ITU Workshop on IP Telephony, Geneva, June 2000

Content

1) Drivers

2) Principles

3) Application

4) Challenges

5) Standards

6) Current Product

7) Closing

s

9ITU Workshop on IP Telephony, Geneva, June 2000

Decentralized Services

PSTN / IN

IP NetworkGwy.Gwy.

Access isolated in eachAdministrative Domain

Clearing HouseBillingServices

Gatekeeper- / Telephony-Domain LocationServices TIPHON

IP Telephony-LocationServices IPTEL

ManagementServicesSNMP...

Trust CenterServices

Access open across Administrative Domains

IP Phone

Small EnterpriseTel. & IP Services e.g. Vocaltec

INServices

PSTN / INPSTN / IN

IP NetworkIP NetworkGwy.Gwy.

Access isolated in eachAdministrative Domain

Clearing HouseBillingServices

Gatekeeper- / Telephony-Domain LocationServices TIPHON

IP Telephony-LocationServices IPTEL

ManagementServicesSNMP...

Trust CenterServices

Access open across Administrative Domains

IP Phone

Small EnterpriseTel. & IP Services e.g. Vocaltec

INServices

s

10ITU Workshop on IP Telephony, Geneva, June 2000

Content

1) Drivers

2) Principles

3) Application

4) Challenges

5) Standards

6) Current Product

7) Closing

s

11ITU Workshop on IP Telephony, Geneva, June 2000

Subscriber Controlled Input via Internet (ISCI)

E-Mail Waiting Indication (EWI)

Call Waiting Internet Busy (CWIB)

Call Completion Internet Busy (CCIB)

Voice over Internet (VoI)

Improved Voice-over-Internet (IVoI)

Attraktive Internet Features

s

12ITU Workshop on IP Telephony, Geneva, June 2000

CCIB: Functional Principle

IPOP

SwitchCore

Content Provider

PSTN/ISDN Internet

InterNode

Switch

Modem /VoIP -Process

Server /Router

Set-upVoIP call

Forward

IPOP

SwitchCore

Content Provider

PSTN/ISDN Internet

InterNode

Switch

Modem /VoIP -Process

Server /Router

Set-upVoIP call

Forward

s

13ITU Workshop on IP Telephony, Geneva, June 2000

WCC: Service

web

VoIP/CCIBortelephone

• WCC contolls data- and voice- connection• WCC contolls data- and voice- connection

Web Call Center

ISPISP(Agent)(Agent)

WebserverWebserver(e.g. archive)(e.g. archive)

ISPISP(User)(User)

EWSD INTERNODEswitching system

web

VoIP/CCIBortelephone

• WCC contolls data- and voice- connection• WCC contolls data- and voice- connection

Web Call Center

ISPISP(Agent)(Agent)

WebserverWebserver(e.g. archive)(e.g. archive)

ISPISP(User)(User)

EWSD INTERNODEswitching system

s

14ITU Workshop on IP Telephony, Geneva, June 2000

Content

1) Drivers

2) Principles

3) Application

4) Challenges

5) Standards

6) Current Product

7) Closing

s

15ITU Workshop on IP Telephony, Geneva, June 2000

Gatekeeper Pricing Protocol: Overview

IP Network

OperatorA Operator

B

1

Gateway Gateway

GatekeeperGatekeeper

Clearinghouse Service

ARQ

2AuthReq

3AuthRsp

5 SETUP

4ACF

6ARQ 7

ACF

IP Network

OperatorA Operator

B

1

Gateway Gateway

GatekeeperGatekeeper

Clearinghouse Service

ARQ

2AuthReq

3AuthRsp

5 SETUP

4ACF

6ARQ 7

ACF

s

16ITU Workshop on IP Telephony, Geneva, June 2000

"Trust by Wire" to "Trust by Authentication"• Trusted authorities must be deployed

e.g.: Trust centers issue security certificates / tokens

• Telco's are traditionally trusted Operation of trust centers generates new income (Verisign..)

• None repudiation evidence gatheringTrust centers can verify, trace and store CLI information forlater proof. This is currently a problem in IP networks

• . . .

"Trust by Wire" to "Trust by Authentication"• Trusted authorities must be deployed

e.g.: Trust centers issue security certificates / tokens

• Telco's are traditionally trusted Operation of trust centers generates new income (Verisign..)

• None repudiation evidence gatheringTrust centers can verify, trace and store CLI information forlater proof. This is currently a problem in IP networks

• . . .

Management: Trust And Authentication Services

s

17ITU Workshop on IP Telephony, Geneva, June 2000

Do users want anything but dial?

• Transparency for Today’s Devices Required?e.g.: G.3 FAX, modem, look and feel, RJ11 plug

• Real-time Billinge.g.: Coinboxes, Prepaid-Cards, and hotel billing

• Connection Setup TimeIs location finding fast enough?

• Call Blocking (Non Payment, 3rd Party ...)What are the requirements that can not be handled?

• . . .

Do users want anything but dial?

• Transparency for Today’s Devices Required?e.g.: G.3 FAX, modem, look and feel, RJ11 plug

• Real-time Billinge.g.: Coinboxes, Prepaid-Cards, and hotel billing

• Connection Setup TimeIs location finding fast enough?

• Call Blocking (Non Payment, 3rd Party ...)What are the requirements that can not be handled?

• . . .

Telephone User Habits / Paradigms:

s

18ITU Workshop on IP Telephony, Geneva, June 2000

Content

1) Drivers

2) Principles

3) Application

4) Challenges

5) Standards

6) Current Product

7) Closing

s

19ITU Workshop on IP Telephony, Geneva, June 2000

Standardization

TIPHON/ETSI is globally accepted as leading body for internet gateway standardization. (www.etsi.org/tiphon)

TIPHON/ETSI is globally accepted as leading body for internet gateway standardization. (www.etsi.org/tiphon)

ITU-T SG 16 concentrates on Multimedia Terminals and Security; develops IP Telephony Standard H.323; TIPHON provides input for this group. (www.itu.org)

ITU-T SG 16 concentrates on Multimedia Terminals and Security; develops IP Telephony Standard H.323; TIPHON provides input for this group. (www.itu.org)

International Telecomm. Union

IETF investigates interworking between Internet and Intelligent Networks. TIPHON influences via member organizations. (www.ietf.org)

IETF investigates interworking between Internet and Intelligent Networks. TIPHON influences via member organizations. (www.ietf.org)

Internet EngineeringTask Force

TIPHON

TIPHON/ETSI is globally accepted as leading body for internet gateway standardization. (www.etsi.org/tiphon)

TIPHON/ETSI is globally accepted as leading body for internet gateway standardization. (www.etsi.org/tiphon)

ITU-T SG 16 concentrates on Multimedia Terminals and Security; develops IP Telephony Standard H.323; TIPHON provides input for this group. (www.itu.org)

ITU-T SG 16 concentrates on Multimedia Terminals and Security; develops IP Telephony Standard H.323; TIPHON provides input for this group. (www.itu.org)

International Telecomm. UnionInternational Telecomm. Union

IETF investigates interworking between Internet and Intelligent Networks. TIPHON influences via member organizations. (www.ietf.org)

IETF investigates interworking between Internet and Intelligent Networks. TIPHON influences via member organizations. (www.ietf.org)

Internet EngineeringTask Force

TIPHON

s

20ITU Workshop on IP Telephony, Geneva, June 2000

Content

1) Drivers

2) Principles

3) Application

4) Challenges

5) Standards

6) Current Product

7) Closing

s

21ITU Workshop on IP Telephony, Geneva, June 2000

Siemensevolutionary strategy for carriers From EWSD to SURPASS with an open architecture

Siemens’ leverage: the large installed base and best in class voice features.Market requires: Open interfaces and decoupling of control and transport.Siemens’ leverage: the large installed base and best in class voice features.Market requires: Open interfaces and decoupling of control and transport.

VoATM

VoIP

EWSDCO

AccessAccess SURPASShiG 2000

SURPASShiG 1000

RAS

SU

RP

AS

S hiA

SURPASS hiQ

VoATM

VoIP

EWSDCO

AccessAccess

EWSDCO

AccessAccess SURPASShiG 2000

SURPASShiG 1000

RAS

SU

RP

AS

S hiA

SURPASS hiQ

• Voice Features• Call Control• Access

• Voice Features• Call Control• Access

pro

pri

etar

yi/f

sEWSD

• Voice Features• Call Control• Access

• Voice Features• Call Control• Access

pro

pri

etar

yi/f

sEWSD

VoATM

VoIP

EWSDCO

AccessAccess SURPASShiG 2000

SURPASShiG 1000

RAS

SU

RP

AS

S hiA

SURPASS hiQ

VoATM

VoIP

EWSDCO

AccessAccess

EWSDCO

AccessAccess SURPASShiG 2000

SURPASShiG 1000

RAS

SU

RP

AS

S hiA

SURPASS hiQ

• Voice Features• Call Control• Access

• Voice Features• Call Control• Access

pro

pri

etar

yi/f

sEWSD

• Voice Features• Call Control• Access

• Voice Features• Call Control• Access

pro

pri

etar

yi/f

sEWSD

s

22ITU Workshop on IP Telephony, Geneva, June 2000

SURPASS hiQOpen Platform with standard interfaces

SURPASS hiQopen platform

SCPIN

SS7Switch STP

PSTN / ISDN

SS7 I

SUP M

GCP

H.323

Data NetworkData Network

GW

SS7STP

PSTN / ISDN

Switch

MGCP

SS7 INAP

GW

RADIUS

Sig

nalli

ngG

atew

ay

H.323H.323

SS7 ISUP

Open API for external ApplicationsRADIUS Server

Gatekeeper

H.323Endpoint

H.323Endpoint

M edia Gateway

Controller

SS7 SignallingGateway

H.323SignallingGateway

Call & Feature Server

Rad ius(AAA)

Op en API Gatekeeper

Media Node

Open API forexternal applications

Registration andRouting Server

SURPASS hiQopen platform

SCPIN

SS7Switch STP

PSTN / ISDN

SS7 I

SUP M

GCP

H.323

Data NetworkData Network

GW

SS7STP

PSTN / ISDN

Switch

MGCP

SS7 INAP

GW

RADIUS

Sig

nalli

ngG

atew

ay

H.323H.323

SS7 ISUP

Open API for external ApplicationsRADIUS Server

Gatekeeper

H.323Endpoint

H.323Endpoint

M edia Gateway

Controller

SS7 SignallingGateway

H.323SignallingGateway

Call & Feature Server

Rad ius(AAA)

Op en API Gatekeeper

Media Node

Open API forexternal applications

Registration andRouting Server

SCPIN

SS7Switch STP

PSTN / ISDN

SS7 I

SUP M

GCP

H.323

Data NetworkData Network

GW

SS7STP

PSTN / ISDN

Switch

MGCP

SS7 INAP

GW

RADIUS

Sig

nalli

ngG

atew

ay

H.323H.323

SS7 ISUP

Open API for external ApplicationsRADIUS Server

Gatekeeper

H.323Endpoint

H.323Endpoint

M edia Gateway

Controller

SS7 SignallingGateway

H.323SignallingGateway

Call & Feature Server

Rad ius(AAA)

Op en API Gatekeeper

Media Node

Open API forexternal applications

Open API forexternal applications

Registration andRouting Server

s

23ITU Workshop on IP Telephony, Geneva, June 2000

Multiservice Access – SURPASS hiA

SURPASS hiA

xDSLTDM

RAS

VoATM

VoIP

Gateway

IP / ATM backbone

Core Router

EdgeRouter

PBX

SM/L Enterprise

Access

ATM, FR/LL

SoHo residential

POTS/ISDNsubscriber

SCPLNP

IN INAPCall Feature Server,

Media Gateway Controller

Open API

PSTN/ISDNnetwork

other carrier

SwitchSwitch

Switch

POTS/ISDNsubscriber

NetworkServers

AAA Server, Reg. & Routing Server

SURPASS hiA

xDSLTDM

RAS

VoATM

VoIP

Gateway

RAS

VoATM

VoIP

Gateway

IP / ATM backbone

Core Router

EdgeRouter

IP / ATM backbone

Core Router

EdgeRouter

IP / ATM backbone

Core Router

EdgeRouter

PBXPBXPBX

SM/L Enterprise

Access

ATM, FR/LL

SoHo residential

POTS/ISDNsubscriber

SCPLNP

INSCP

LNP

IN INAPCall Feature Server,

Media Gateway Controller

Open API

PSTN/ISDNnetwork

other carrier

SwitchSwitch

Switch

POTS/ISDNsubscriber

PSTN/ISDNnetwork

other carrier

SwitchSwitch

Switch

SwitchSwitchSwitchSwitch

SwitchSwitch

POTS/ISDNsubscriber

NetworkServers

AAA Server, Reg. & Routing Server

s

24ITU Workshop on IP Telephony, Geneva, June 2000

SiemensCorporate GSM Solution

InternetQoS LAN

WANCorporateIP network

PSTNISDN

Router

PBXGateway

WARPWARP

Firewall

H.323 / GSMGatekeeper

OAM ISDN PRAServere.g. Voicemail,

Directory

Pico BTSServer

PBXNetwork

GSM Public Operator

BTS

BTS

Abis

AbisMSC

Gateway

OMC-B

OAMGateway

MCUE+G If

MSC

BSC

HLR

SGSN

GPRSGateway

H.323Terminal

InternetQoS LAN

WANCorporateIP network

PSTNISDN

Router

PBXGateway

WARPWARP

Firewall

H.323 / GSMGatekeeper

OAM ISDN PRAServere.g. Voicemail,

Directory

Pico BTSServer

PBXNetwork

GSM Public Operator

BTS

BTS

Abis

AbisMSC

Gateway

OMC-B

OAMGateway

MCUE+G If

MSC

BSC

HLR

SGSN

GPRSGateway

H.323Terminal

s

25ITU Workshop on IP Telephony, Geneva, June 2000

Content

1) Drivers

2) Principles

3) Application

4) Challenges

5) Standards

6) Current Product

7) Closing

s

26ITU Workshop on IP Telephony, Geneva, June 2000

Visions: Is IP switching the solution for voice?

PSTN

IPRouter

IPTelGwy

IPRouter

Mo

dem

sxD

SL

Cab

le

Hea

d

A/DAnalog loop

xDSL loop

Via cable

Clean IP Switch orGigabit Ethernet cluster

Trunks to Internet

Trunks toPSTN

Trunks toSIP, H.323 net

Servers: RADIUS, SIP, H.323, Media, policy

A/D

A/D

M

M

A/D

PSTN

IPRouter

IPTelGwy

IPRouter

Mo

dem

sM

od

ems

xDS

LxD

SL

Cab

le

Hea

dC

able

H

ead

A/DA/DAnalog loop

xDSL loop

Via cable

Clean IP Switch orGigabit Ethernet cluster

Trunks to Internet

Trunks toPSTN

Trunks toSIP, H.323 net

Servers: RADIUS, SIP, H.323, Media, policy

A/D

A/D

MM

MM

A/D


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