Transcript Arquitectura actual. Visión Conceptual

Network Trends In Telecommunications
Industry
By Virgilio Gonzalez
For UTEP networking courses
Telecommunication Services
The “Service” is what the user perceives.
The Service has three major components



The Connectivity functions are the telecommunication applications like
LD, 800, Internet, PL, etc.
The Billing involves all the elements needed to charge the customer
and get the payment
The Customer Care elements are all the processes needed to activate
and maintain the previous two components
The “Network” provides the technological infrastructure to
support the services
The network simply moves user information form one point to
another.
The network functions are



Network capabilities to support the different service types
Network capacity to handle all the customers
Systems to control everything and interact with billing and Customer
Care Service Functions
Service vs. Technology
The
network technologies provide capabilities and capacity to the services.
The systems support the billing and customer care functions
The services have evolved with a high dependency on the underlying
technology
However, there is a trend to make them independent of the networks
CONNECTIVITY
FUNCTIONS
SERVICE PLANE
BILLING
CUSTOMER
CARE
TECHNOLOGY PLANE
NETWORK
CAPACITY
SYSTEMS
NETWORK
CAPABILITY
Classic Model
TECHNOLOGY PLANE
Private Lines
Internet
Data
Packet
Network
TRANSPORT
Transmission
Network
MANAGEMENT
Voice
Switched
Network
Frame Relay
SERVICE PLANE
Video
Conference
VNS
A800
LD
Connectivity, Billing & Customer Care
Telecommunication Services Evolution
Classic Model



In the classic model, the user applications are tied to a class of service
(voice, data, transport)
Each class of service is supported by a specific network technology.
The network technology is also tied to the customer access medium
Future Model





In the future the services will have an universal user interface
supported by an universal class of network
The user applications will be constructed through standardized
interfaces to the universal user interface allowing flexible service
construction and user customization
The network access connectivity will have two major types, Wireless
and Cabling
Wireless access offers fast deployment but has restricted capacity
Cabling through copper may reach small concentrated end users and
fiber optics will offer the highest bandwidths to the larger ones.
Future Model
TECHNOLOGY PLANE
API
USER
SERVICE
Private Lines
Internet
Frame Relay
Video
Conference
VNS
A800
API
API
API
UNIVERSAL USER INTERFACE
UNIVERSAL NETWORK
FIBER OPTIC OR
WIRELESS
COPPER CABLING
MANAGEMENT
SERVICE PLANE
LD
USER
SERVICE
Connectivity, Billing & Customer Care
Convergence
Categories
Entertainment
C
A
T
V
Information
transaction
L
E
C
Communication
Services
•Broadcast CATV
•Enhanced pay per view
•Video on demand
•Interactive TV
•Electronic content distribution
•Interactive games
•Video catalog
•Distance learning
•Desktop multimedia
•Image networking
•Work at home
•Telecommuting
•Video conferencing
•Video telephony
•ISDN
•POTS
Attributes
•One- way
•Broadcast
•Broadband
•Nonswitched
•Two-way
•Asymmetric
•Narrowband, wideband,
and broadband
•Switched
•Two-way
•Switched
•Symmetric
•Narrowband and
wideband
Competition
“Every morning in Africa, a zebra wakes up.
It knows that it must run faster than the fastest lion
or it will be killed. Every morning a lion wakes up.
It knows it must outrun the slowest zebra or it will
starve to death. It doesn't matter whether you're a
lion or a zebra. When the sun comes up, you
better be running.”
Market Challenges
Changes in Legislation




Market de-regulation
Settlements
Correspondent Relationship
Globalization
Industry re-alignment




PTT, ISP, Cable, Data Warehousing, etc.
New Market Segments
New Entrants
Global Economy woes
Evolution from country specific bi-lateral agreements to
Industry Multi-to Multilateral agreements.
New revenue Generating Services
Networks
Different
technologies are
involved in the
communication
systems
A Model is required
to provide a
functional structure
to the system
Public vs. Private Networks
NNI - Network to Network Interface
Pub UNI - Public User-to-Network Interface
NNI
Priv UNI - Private User-to-Network Interface
Public sw itch
NNI
Pub UNI
Mainframe
Public sw itch
Pub UNI
Workstation
NNI
PUBLIC
NETWORK
Public sw itch
Pub UNI
PRIVATE
NETWORK
PRIVATE
NETWORK
Workstation
Priv UNI
Priv UNI
Private A TM Sw itch
Minicomputer
Priv UNI
Minicomputer
Private A TM Sw itch
Priv UNI
Telephone
Telephone
Fax
Fax
Local Area Networks
Created to share resources in computer environments
Grown in capacity from 100’s of kbps to 10 Gbps
Usually are managed by a single entity and has a small geographic
reach
Network Technology Conceptual View
Network philosophy structured in 4
levels
Core network is common for all
services and mediation devices, its
function is to provide:

Capacity

Restoration

Flexibility
Services are provided mostly by
mediation devices such as:

5ESS for voice services

Routers for Internet

Switches for Frame Relay
Metro - Access should provide
integrated access to various
mediation devices (services).
CPE (Customer Premise Equipment)
belongs to the user but could be
managed by the Telco adding value
to the service already provided.
Services provided by one integrated
network management
Core
Network
Core Network
Mediation Service
Metro - Access
CPE
Network Structure Model
SERVICE
MEDIATION
CORE
METRO
ACCESS
LAST MILE
CPE
Services
Without IAD
PSTN
SDS
SW
Voice
Gateway
M
Li
nk
nk
Li
Radio
P2P
Radio
P2P
nk
Li
Router
M
FR
IP
PL
ATM
Voice
ATM
ISDN
FR
IP
PL
PL
FR
ATM
Voice
ATM
IP
ISDN
PL
FR
SW
M
AT
SW
AT
IP
AT
AT
M
SW
Radio
PMP
k
Lin
SW
SW
Video
Video
Server
ink
ML
AT
SW
DWDM /
SDH / ATM
CORE
ATM
Backbone
SW
A TM
Link
CATV
IP
Voice
PL & FR
with TDM
(CBR)
CMTS
(HFC)
SW
M
AT
SW
k
SW
Packet
Switch
Lin
FR
ATM
Optical
MUX
AT
M
SW
lin
k
k
k
lin
FR
Voice
IP
PL
Voice
ISDN
CATV
FR
ATM
Lin
H
PD
Voice
ATM
IP
ISDN
PL
FR
M
LP
PDH/
SDH
SW
OLT
Fib
er
PL
FR
ATM
AT
SW
With IAD
DSLAM
IP
Core Network Evolution
Core Network Features




Completely optical core network (DWDM and Optical Cross-Connects)
Capable of delivering up to a wave-length per service
Intelligence and restoration capabilities included in DWDM
Capable of supporting SDH/ATM/IP protocols
Speeds from
155 Mbits/s up
to 10 Gbits/s
Optical
ADM
DWDM
Ring
Up to 200
Wave Lengths
Optical
Cross
Connect
WAVELENGTH DIVISION MULTIPLEXING
Type of FDM but at optical frequencies
Operates in ~200nm bands at the 1300nm and 1550nm
regions
Bands are typically restricted by amplifiers devices to
~25nm (1540-1565nm for EDFA)
Dense WDM currently allows spacing of 1nm between
channels
ATM & SONET
Telephone Switched Services



Newer access will be provided through data networks such as IP or
ATM.
Interconnection to other networks and support of classic services could
be provided through dedicated access and transport
A convergence of services will be provided with IP and other data
services. The intelligence will exploit the advantages of both networks
Intelligent Service Control Logic
SCP
Service
Node
Other
Networks
STP
Classic Transport
Dedicated facilities
SCP
Intelligent Peripheral
STP
Service
Node
IP/ATM
ACCESS
INTERNET
Data Services Network Evolution
Incorporate Internet and Frame Relay into one ATM core network
providing integrated management/operation
Incorporate MPLS technology to the network providing the ability to
better manage and operate IP services (dial-up, VPN’s, Internet)
Customer’s would dial to one integrated network for Frame Relay,
VPN, Internet
W orldNet
- Internet
INTERNET
STM1
WEB / Mail Servers
STM1
CoreMex
STM1
ATM
Trunk
STM1
ATM
Trunk
FR/ATM/CLOUD
Catalyst
Catalyst
STM1 Backbone
Catalyst
STM1
ATM
Trunk
Services Control Logic
Catalyst
STM1
ATM
Trunk
AccessMex
Edge Router
AccessMty
Edge Router
Dialup
Dialup
Metro Ring Network Evolution
Metro Ring Network Features




Wavelength Division Multiplexing as core layer
Network elements capable of communicating at SDH and ATM level
ATM will be responsible for delivering different services with QoS
Intelligence and restoration capabilities will be provided by SDH
ATM will include SDH functionality
Optical
ADM
Speeds from
2 Mbits/s up
to 155 Mbits/s
WDM
Ring
Up to 8
Wave Lengths
ATM
Switch
Capable of delivering
servi ces such as Private
Line, IP based services,
Frame Relay, Digital TV,
etc.
Network Layers

Data
Services
IP
Constant Bit
Rate
Services
ATM
SDH
Fiber / WDM
Wireline Access
ACCESS POP
ACCESS POP
ACCESS POP
ACCESS METRO RING
ATM/SDH
OLT
ACCESS POP
ATM SW
ATM SWITCH
xDSL
OLT
OLT
ACCESS
COLLECT RING
OLT
xDSL
ATM SW
ATM SW
OLT
xDSL
xDSL
OLT
xDSL
xDSL
OLT
xDSL
ATM SW
Fiber Optic
Wire Pair
Wireless Access, Point-to-Point and Point-toMultipoint
10.5 GHz Point To Multipoint Band
nx64 to 2E1's Bandwidth / Link
6-10 Km Radius
RF
RF
RF
RF
RF
RF
RF
RF
BASE
STATION
BASE
STATION
RF
RF
BASE
STATION
Point to Point Radio
OLT
Point to Point Radio
ACCESS POP
Point to Point Radio
ACCESS METRO RING
ATM/SDH
OLT
ACCESS POP
ACCESS POP
ACCESS POP
Fiber Optic
7, 15 and 23 GHz Point To Point Bands
1xE1 to 63 xE1’s (E3, T3, & STM1) Bandwidth / Link
0.5 to 15 Km and 50 Km / Link
Management Layered Approach (TNM)
Business Management

Manage overall business, e.g.,
achieving ROI, market share,
employee satisfaction
Service Management

Manage services offered to customers,
e.g., meeting SLA’s, quality, costs.
Network and Systems
Management

Manage the networks and systems
that deliver services, e.g., capacity,
diversity, congestion.
Element Management

Manage elements comprising the
networks and systems e.g., switches,
routers
Network Element

Switches, transmission elements,
routers, etc.
Service Mgmt
Network Mgmt
Element Mgmt
Network Element
Management Systems
TMN Layers
Customer Care Systems
Business
Management
Mktg./Sales Supt.
BILLING
Service
Management
Customer
Service
Maint.
DELIVERY
CAPACITY
PLANNING
Network
Management
NETWORK
MANAGEMENT
NETWORK
MONITORING.
Element
Management
DCN
Network
Elements
Switch, Transport, Data
Technology Challenges
Service Intelligence for integrated voice and data
networks.
RAPID deployment
Adaptive Development to Region/country specific/
Market Segments needs
Customer Care, Network Care, and Billing integration.
Multi-lateral Network and Service Architecture
Interoperability, scalability, reliability & security
High cost of integration
Carrier Grade VoIP for voice, fax, conferencing, etc.