International Telecommunication Union
Promising services to
boost NGN
Helmut Schink
VP Network Standards, Siemens ICN
Workshop on Next Generation Networks: What, When & How?
Geneva, 9-10 July 2003
Evolution of CPE devices
ITU-T
Support
of
different
service
quality
Mobility
&
Security
Dynamic Delivery
Of New Services
Remotely Managed
& Upgradable
Internet
Enabled
devices
Connectivity
to Multiple devices
on Home Network
Networkin
g
Within the
home
Broadband
Connectivity
to One Device
Modem
1999
9-10 July 2003
Router
2000
2001
Service gateways
2002
2003
Workshop on Next Generation Networks: What, When & How?
2
Intelligent Services Gateway
ITU-T
Interface
to
Application
Domains
Home Gateway
External
BB network
Wireless Connectivity
Home
Security
Home Management
Communications,
Information,
Work-At-Home,
Education
9-10 July 2003
Entertainment
Workshop on Next Generation Networks: What, When & How?
3
ITU-T
Residential
Splitter /
Modem
Advanced
residential – SME
Home
gateway
WLAN BS
Multiservice access
The DSLAM grows up!
xDSL
POTS
ISDN-BA
ISDN-PRA
V5.x
E1 / LL
Phase 1: Separate backbones for voice and data
Initial DSL roll-out
Multi-service access combines voice and
data access capabilities in a single
backbone
Bundle DSL with a new POTS
proposition and get rid of
legacy features!!!
Phase 2: Packed-based backbone for voice and data
Evolution and gradual DLE replacement
Media Gateway Controller
Signaling Gateway
Call Feature Server
TDM network
IP network
9-10 July 2003
Any
DSLAM
QoS IP network
Workshop on Next Generation Networks: What, When & How?
4
PSTN evolution
ITU-T
9-10 July 2003
o
The classical PSTN market is stagnating
o
Obsolescence is not key, but lack of flexibility within
current PSTN network is a limiting factor
o
Main threat for PSTN operators:
o
Shift of telephony services to other
infrastructure providers
o
Main opportunity for PSTN operators:
Migration of existing infrastructure towards broadband
o
Voice drives the revenues of the telcos, but focus for
investment is NGN
o
Media gateways, call feature servers, and signaling
gateways are the key building blocks of a multi-service
architecture
Workshop on Next Generation Networks: What, When & How?
5
The SIP challenge
Who's selling the services?
ITU-T
Security,
Authentication
Presence
IM
MM PC
Session Control Layer
LAN
DSL
Modem
SIP
Proxy
Server
SIP
Applications
SIP
Proxy
Server
3rd party
applications
SIP
Call data
DSL
Modem
IP
IP
IP
PER
IP
Network Layer
SIP
PER
IP
IP
Connectivity
9-10 July 2003
MM PC
MyService
SIP
Phone
DSL
Modem
Workshop on Next Generation Networks: What, When & How?
6
The SIP Challenge:
Ownership of user data
ITU-T
MyService
ISP
MM PC
DSL
Modem
3rd party
applications
3rd party
applications
3rd party
applications
SIP
Proxy
Server
LAN
DSL
Modem
User Database,
Security,
SIP
AuthenProxy
tication
Server
SIP-Phone
UTRAN
UMTS
9-10 July 2003
PER
Presence
IM
Network Layer
Applications
PER
Connectivity
Workshop on Next Generation Networks: What, When & How?
7
towards value-added services
ITU-T
 Value-added services will become the main differentiator
 Most added value services are based on voice, data, and
mobility convergence and require support beyond best
effort
Services
Business vision
IP networking
Transport service
9-10 July 2003
Customer
confidence
Security
Customer
service
QoS
Availability
Reliability
Mission critical business
applications
Business
specific
applications
e-Commerce
Web hosting
IP VPN
Key requirements
Business
leadership
(innovations)
Differentiation: Business opportunity
Commodities
Operational
leadership
Workshop on Next Generation Networks: What, When & How?
8
The new service architecture
ITU-T
The service architecture delivers:
 Service models focusing on the experience, not the
connection
 Business models that are flexible and easily adaptable
 Different services for different markets with different billing
 Simultaneously delivery of:
 Low volume / high margin services
 High volume / lower margin services
 Drive model from bits to experiences
 Product creation and definition for fast market trial
Service Models
Assured experience
VOIP
VPN
GAMING
Better than best effort
INET
Best effort
9-10 July 2003
Workshop on Next Generation Networks: What, When & How?
9
The New Broadband Service Control Architecture
ITU-T
Service Intelligence Domain
 The "IN" of the data network
 Virtualization of the service
 Customer-centric view
 Manage services, not bits
 Real time changes to the
Network / service
management
connection between
 Customer and content, or
 Customer and customer
Policy management
(service control)
Service Delivery Domain
Access
On the
Move
PSTN
Home
Broadband
home,
SME
9-10 July 2003
IP Core
WLA WLAN
BS
N
VPN
POTS
/ ISDN
ATM /
Ethernet
xDSL
HGW
Edge
Router
(MPLS)
Core
Content
domain
 Delivers scalability and reach
 "Any Access"
 DSL & WLAN
 Service Resiliency
 Carrier-, not enterprise-focused
 Performance for all traffic types
 Virtualization of the network
 Meditation of legacy systems
 Ease of management
Workshop on Next Generation Networks: What, When & How?
10
Example: The Turbo Mode browser talks BRAS
ITU-T
o
• Opens an Ad Window
• Demands Higher Speed from the Unisphere ERX Router
• Sends Unique User ID Data to the ISP
• ISP Allows more Speed and Sends Targeted Advertising
Demand for more Speed
+ User ID
Content
domain
IP Core
Edge
Router
Higher Bandwidth
+ Advertising
(MPLS) Core
BRAS
Opera Browser
9-10 July 2003
Workshop on Next Generation Networks: What, When & How?
11
The New Broadband Service Control Architecture
(Session Control)
Voice
other
e.g. VoD Gaming Softswitch
ITU-T
Service Intelligence
SIP Apps.
SIP-T
SIP-T
SIP
Service Selection Control
SIP Proxy
SIP
MGCP/H.248
Service Delivery Domain
Access
On the
Move
PSTN
Home
Broadband
home,
SME
9-10 July 2003
IP Core
WLA WLAN
BS
N
separation of service
selection and service
interaction
 Service interaction most
probably SIP based
 Architecture allows controlled
access of independent
service providers (e.g.
gaming, VoD)
 controlled access b/w
 controlled QoS
 billing/accounting
possibilities
PSTN / PLMN
VPN
POTS
/ ISDN
 Architecture allows
ATM /
Ethernet
xDSL
HGW
Edge
Router
(MPLS)
Core
Workshop on Next Generation Networks: What, When & How?
12
Today's Network
Overview
ITU-T
TDM
IP
Access
Aggregation
Core
Transit
SW
Servers &
Special Routers
Transit
SW
e.g. ERX
BB-RAS
DMZ
Gwy
FW
Web …
SDH/DWDM
Local
SW
Local
SW
SDH
PBX
POTS/ISDN/PABX
CPE
LAN
DSL CPE
ATM
SOHO
Local-Loop
Enterprise IP
Connection
Single or multi home
PBX
CPE
LAN
PBX
IP Terminals
9-10 July 2003
POTS/ISDN/PABX
IP Terminals
Workshop on Next Generation Networks: What, When & How?
13
ITU-T
All IP Network
Multi
Operator
Scenario
Operator A
Operator B
Access Core
Aggregation
Backbone
BB-RAS
VPN: PPP or MPLS
Provider vs CPE
provisioned
POTS
Trunks
DSL CPE
RAS selection
CPE
LAN
IP Terminals
IP Terminals
IP Terminals
9-10 July 2003
BB-RAS
Core Access
Aggregation
L2:
- Low CAPEX & OPEX
- Fast Failover
QoS:
- Engineering needed
- 801.1p Prio. Ehternet
- No advantage for MPLS
- MPLS needs awareness
throughout the path
Regulatory:
- More Transparency
- e.g. RAS of other OP.
Workshop on Next Generation Networks: What, When & How?
14
The 21st Century network architecture ?
• Co-existence and interworking
ITU-T
Applications /
Content of multiple control
SCP
architectures.
 PSTN and PLMN will be about
for some time
(Call Agent,
 Co-existenceSoftswitch,
with NGN
MSC-S, CSCF, MGCF)
 Gradual migration of
customers
UMTS/
GSM
On
the
Move
Mobile
Access
Gateway
WLA WLAN
BS
N
PSTN
POTS/ISDN
Home
Corporate
&
High End
SME
Customer
9-10 July 2003
Parlay, CORBA
Signaling
VLR
(STP, SGW, GTT, LNP)HLR
Service Control
 Who owns the intelligence
wins the
revenue
! …
COPS,
SIP,
MEGACO
• MGCP
Open /interfaces
between
Access
Broadband
Home,
SME
Open
I/f
ATM/
Ethernet
xDSL
HGW
VoTDM
Data, VoIP
Multi Service
Acc. Gatew.
Open
service
elementlayer
and
OSS creation environment
 Agnostic
to delivery
networks
IP Core
• Customer
centric view
• Customer access to
management
MultipleMetro
access technologies (WLAN,
IP/ Ethernet
xDSL, GE, …)
VPN
 DSLAM is evolving into the• prime
multi- Integration on
Multi-Service
service
GE
the optical layer
access gateway
• Dynamic assignment of
PSTN / PLMN
RPR / MPLS
Edge
Router
 Low end CPE - a commodity
 High end CPE - multi service platform,
(MPLS)
capacity
Core
Voice
Gateway
• Becomes commodity
• GE and Lambda products in
mobility, security and managed
 Customer lock-in by delivering
metro
Ethernet / managed services
• Legacy ATM access
NG Multi-Service Optical Networking Platform
LL / VPN
• QoS support
Workshop on Next Generation Networks: What, When & How?
Resource Control / Self Managing Network
Management / OSS
Call
Contr.
CDN
Appl.
IN
15
Not to forget
ITU-T
o Basic services need to be
• interoperable
• easy to use
• affordable
o Differentiation needs to be supported
for
• businesses
• high end users
9-10 July 2003
Workshop on Next Generation Networks: What, When & How?
16