KNOM Tutorial 2000
Integrated Management of
Access Network
Dec. 2000
Ho Chang
changho@telecom.samsung.co.kr
Samsung Electronics
KNOM Tutorial 2000
Contents
• What is Access Network
• Evolution of Access Network Voice & Data Over Voice
• Evolution of Access Network Voice Over Data
• Managing Converged Voice/Data Network
• Conclusion
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
What is Access Network
• In telephony, an Access Network is the wired connection
from a telephone company's central office in a locality to
its customers' telephones at homes and businesses. This
connection is usually on a pair of copper wires called
twisted pair. The system was originally designed for voice
transmission only using analog transmission technology on
a single voice channel. Today, your computer's modem
makes the conversion between analog signals and digital
signals. With Integrated Services Digital Network or
Digital Subscriber Line, the local loop can carry digital
signals directly and at a much higher bandwidth than they
do for voice only.
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KNOM Tutorial 2000
Service Perspectives - 1
•
•
•
•
Voice
Data over Voice
Data
Voice over Data
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KNOM Tutorial 2000
Service Perspectives - 2
Traffic Estimation in US
Traffic (Tera Byte / Day)
1600
1400
1200
1000
800
600
400
200
0
년도
1998
1999
인터넷트래픽
2000
음성트래픽
2001
2002
2003
인터넷전화
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KNOM Tutorial 2000
Network Perspectives - 1
• Subscriber Loop(Local Loop)
• 1G DLC
– Digital Loop Carrier
– Copper Line
• 2G DLC
– Voice(UDLC/IDLC)
– Optical Line
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Network Perspectives - 2
• 3G DLC
– Voice + Data
– Optical Line with Broadband
• Data Access Networks:
– DSLAM
– HFC
– Cable TV
– B&A
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KNOM Tutorial 2000
Evolution of Access Network
Voice & Data Over Voice
KNOM Tutorial 2000
Subscriber Loop
• Simply twisted-pair cooper lines from CO to
Subscribers
IP
NAS
Local
Exchange
Local
Exchange
PSTN
Customer
Premise
Central
Office
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Customer
Premise
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KNOM Tutorial 2000
1G DLC Network
IP
N-NAS
DLC
Local
DLC Exchange
Local
Exchange DLC
DLC
PSTN
Customer
Premise
Curb
Area
Central
Office
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Curb
Area
Customer
Premise
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KNOM Tutorial 2000
1G DLC Equipments
• Multiplexed Cooper Lines from CO to CP
• Channelized E1 or DS3
Phone
Fax
Dial-Up
Modem
DS0
DS0
DS0
DS0
Remote
1G
DLC
Channelized
E1 or DS3
Central
Office
1G
DLC
DS0
Local
Exchange
DS0
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KNOM Tutorial 2000
2G DLC Network - UDLC
IP
N-NAS
DLC
DLC
Local
Exchange
Local
DLC
Exchange
DLC
PSTN
Customer
Premise
Curb
Area
Central
Office
Central
Office
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Curb
Area
Customer
Premise
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KNOM Tutorial 2000
2G DLC Equipments - UDLC
• TDM Optical Lines from CO to CP
• Twisted pair cooper lines between CO DLC
and LE
• FLC-A or FLC-B
Phone
Fax
Dial-Up
Modem
DS0
DS0
DS0
DS0
Remote
2G
DLC
Channelized
STM-1
Central
Office
2G
DLC
DS0
Local
Exchange
DS0
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KNOM Tutorial 2000
2G DLC Network - IDLC
IP
N-NAS
DLC
DLC
Local
Exchange
Local
DLC
Exchange
DLC
PSTN
Customer
Premise
Curb
Area
Central
Office
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Curb
Area
Customer
Premise
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KNOM Tutorial 2000
2G DLC Equipments - IDLC
• TDM Optical Lines from CO to CP
• E1 lines between CO DLC and LE
• FLC-D
Phone
Fax
Dial-Up
Modem
Channelized
E1
DS0
DS0
DS0
Remote
2G
DLC
Channelized
STM-1
Central
Office
2G
DLC
Channelized
E1
Channelized
E1
Copyright 2000 Samsung Electronics Co.,LTD
Local
Exchange
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KNOM Tutorial 2000
3G DLC Network
IP
B-NAS
B-NAS
ATM
DLC
DLC
ATM
Local
Exchange
Local
Exchange
DLC
DLC
PSTN
Customer
Premise
Curb
Area
Central
Office
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Curb
Area
Customer
Premise
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KNOM Tutorial 2000
3G DLC Equipments
• ATM Based Optical Lines from CO to CP
• Directly Transport Data Traffic
• FLC-C(Samsung), PathStar(Lucent),
MSAN(Alcatel)
Channelized
E1
Phone
Fax
Remote
3G
DLC
Dial
Modem PC
DS0
PC
ATM Based
STM-1/4/16
Central
Office
3G
DLC
Channelized
E1
Local
Exchange
Channelized
E1
CPE
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
DSLAM Network
IP
B-NAS
B-NAS
ATM
DSLAM
ATM
Local
Exchange
CPE
Customer
Premise
Local
Exchange
CPE
PSTN
Central
Office
DSLAM
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Customer
Premise
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KNOM Tutorial 2000
DSLAM Equipments
• Transport High-Speed Data over Existing
twisted-pair lines as well as Voice
• DS0 Twisted-Pair Between DSLAM and LE
• AceLink(Samsung), Stinger(Lucent),
IMAS(Promatory)
Phone
DS0
Fax
Central
Dial
Modem PC
Office
DSLAM
DS0
PC
DS0
Local
Exchange
DS0
CPE
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
Evolution of Access Network
Voice Over Data
KNOM Tutorial 2000
Voice over Data
• Voice Over Packet to PSTN
– VeDSL(Voice Enabled DSL)
– VoDSL Gateway
• PSTN to Packet Network
– Access Media Gateway
– Trunk Media Gateway
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
VeDSL - 1
• Voice Enabled DSL
• Use one of ADSL Channels as Voice Channel
PCM voice channel (64Kbps)
POTS
512 kbps
upstream
1536 kbps
downstream
...
Hz
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KNOM Tutorial 2000
VeDSL - 2
• Transport Voice PCM Signal itself
• IDLC is normally implemented in
DSLAM
DSLAM
Local
Exchange
CPE
Customer
Premise
Local
Exchange
CPE
PSTN
Central
Office
DSLAM
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Customer
Premise
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KNOM Tutorial 2000
VoDSL Gateway
• Transport Packetized Voice Signal over ATM
• IDLC is normally implemented in DSLAM
Local
Exchange
Local
Exchange
PSTN
VoDSL
Gateway
DSLAM
VoDSL
Gateway
DSLAM
CPE
Customer
Premise
CPE
Central
Office
Central
Office
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Customer
Premise
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KNOM Tutorial 2000
VeDSL vs. VoDSL
VoDSL
(Broadband Loop Emulation Service)
VeDSL
(Voice Enabled DSL)
Echo Canceller
Compression
AAL2
Codec
ATM
Codec
SLIC
ADSL Phy
SLIC
To
DSLAM
Copyright 2000 Samsung Electronics Co.,LTD
ADSL Phy
To
DSLAM
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KNOM Tutorial 2000
Trunking Media Gateway
• Replace Class 4 Switches
Trunking
Gateway
Trunking
Gateway
IP/ATM
PSTN
MGCP/H.248
PSTN
MGCP/H.248
DB
SCP
SoftSwitch
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KNOM Tutorial 2000
Access Media Gateway
• Replace Class 5 Switches
Access
Gateway
Access
Network
Access
Gateway
Access
Network
IP/ATM
MGCP/H.248
MGCP/H.248
DB
SCP
SoftSwitch
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KNOM Tutorial 2000
Where is the end ?
Network
Management OSS
Center
3rd party
Call Feature
Server
SS7 Network
DB
INAP
RADIUS
Server
SCP
STP
Open API
RADIUS
GateKeeper
H.323
ITSP/Enterprise
Network
SS7AP
SS7AP
SIP/SIGTRAN
SoftSwitch
UMS
SoftSwitch
Intelligent
Peripherals
MGCP/SIGTRAN/SIP
Internet
or
other Networks
PACKET Network
(IP/ATM)
API
Access
Media
Gateway
M.G
Trunking
Media
Gateway
PBX
Enterprise
Network
ISDN-BRA
POTS
M.G
Access
Network
Element
Management
System
POTS
xDSL
ISDN-BRA
ISDN-PRA
V5.2
MSC/BSC
Exchange
PSTN/ISDN
IVR
Mobile
Network
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
Managing
Converged Access Network
KNOM Tutorial 2000
Changing Focus of
Integrated Management System
1975
Mechanization
Task
Reduction
1985
Automation
Task
Elimination
Reduce
ReduceCosts
Costs
1995
Flow-Through
Time
Reduction
2005
Service
Differentiation
Revenue
Enhancement
Gain Advantage
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
Problems in Integrated
Management System
• Nasty Problems
– Grandma’s Chair
– The Plug
That Won’t Plug In
– Too Many Boxes
• Recent Wows
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KNOM Tutorial 2000
Grandma’s Chair
• When Implementing a Management
System, a Carrier Wants it To Work With
the One(s) It Already Has
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KNOM Tutorial 2000
Grandma’s Chair
in Access Network
DS0
Phone
DS0
Fax
DS0
Dial-Up
Modem
Remote
1G
DLC
DS0
Phone
DS0
Fax
DS0
Dial-Up
Modem
Remote
2G
DLC
Channelized
E1
DS0
Channelized
STM-1
DS0
Phone
DS0
Fax
DS0
Dial-Up
Modem
PC
Channelized
E1 or DS3
CPE
Remote
3G
DLC
Central
Office
1G
2G
3G
DLC
Channelized
E1
DS0
Local
Exchange
Channelized
E1
DS0
ATM Based
STM-1/4/16
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KNOM Tutorial 2000
The Plug That Won’t Plug In
• “Make me a Management System
that can plug into any vendor’s NE
(today and tomorrow) and provide
me the control and information I
need. Also, plug together the other
Management Systems.”
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
Too Many Boxes
• Need Many Management Systems for
Small Networks
• Need Many Management Systems for
Medium Networks
• Need Many Management Systems for
Large Networks
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KNOM Tutorial 2000
Too Many Boxes
in Access Network Too
NMS
for Fault
Management
EMS
for Vendor C
EMS B-NAS
for Vendor B
B-NAS
NMS
for ATM Network
NMS
for Vendor B
EMS
for Vendor A
B-NAS
IP
B-NAS
EMS
for Vendor C
DSLAM
Service
Management
System
for DSLAM
NMS
for Vendor A
EMS
for Vendor B
DSLAM
ATM
EMS
for Vendor A
DSLAM
NMS
for IP Network
DSLAM
Local
Exchange
CPE
Customer
Premise
PSTN
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
Recent Wows
• Management System Architecture for
Converged Voice/Data Networks
• Large, Correct Databases - Coherent
Data Architectures
• Flow-Through Provisioning of Complex
Voice/Data Services
• Converged Network Surveillance
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KNOM Tutorial 2000
Converged
Voice/Data Networks - 1
NMS
for Local Exchange
IP
N-NAS
Local
Exchange
Local
Exchange
PSTN
Customer
Premise
Central
Office
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Customer
Premise
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KNOM Tutorial 2000
Converged
Voice/Data Networks - 2
Service
Management
System
for Voice
IP
B-NAS
B-NAS
ATM
DLC
DLC
ATM
Local
Exchange
Local
Exchange
DLC
DLC
PSTN
Customer
Premise
Curb
Area
Central
Office
Central
Office
Copyright 2000 Samsung Electronics Co.,LTD
Curb
Area
Customer
Premise
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KNOM Tutorial 2000
What Should be Managed
•
•
•
•
•
•
•
IADs or CPEs
DLC Systems and DSLAM Systems
NASs, Routers, and IP Switches
ATM Switches
VoP Gateways
Soft Switches
Interoperable Over Variety of Equipments and
Vendors
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
How Can Interconnect
• OSI Protocols v.s. Internet Protocols
• OSI Protocols
– Heavy Weight, Expensive and Poor Performance
– Reliable and Secure
• Internet Protocols
– Light Weight and Cheap
– Unreliable, Less-Secure and Limited IP Address
Resources
• Interconnect Variety of Equipments and
Vendors
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KNOM Tutorial 2000
How to Inter-Operate
•
•
•
•
•
TMN CMISE/CMIP
SNMP V.1/2/3
CORBA
WEB based Protocols
Policy Based Management Protocols
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KNOM Tutorial 2000
Integration
Over Management Layers
•
•
•
•
Element Management Layer
Network Management Layer
Service Management Layer
Flow Through Provisioning from Service
Layer to Element Layer
• Correlate Inter-Layer Functionality
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
Conclusion
KNOM Tutorial 2000
• Voice to Data
• Data over Voice to Voice over Data
• 64Kbps to 10’s Mbps, over 1000 times
Bandwidth
• Convergence of Voice and Data
Copyright 2000 Samsung Electronics Co.,LTD
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KNOM Tutorial 2000
• Nasty Problems in Access Network Too
– Grandma’s Chair
– Too Many Boxes
– Too Many Protocols
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KNOM Tutorial 2000
• Recent Wows in Access Networks
– Converged Voice/Data Network
– Flow-Through Provisioning
– Integrated Network Surveillance
Copyright 2000 Samsung Electronics Co.,LTD
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