Transcript DSL Country Case Jordan Telecom - ITU

DSL In Jordan
Eng. Khaled Soboh
DSD Manager
Jordan Telecom
Jordan
Contents
• Definition and Introduction
• xDSL and ADSL History
• xDSL Benefits
•
•
•
•
•
•
xDSL Deployment Hurdles
Jordan Internet Project
JT Data Network Services
xDSL Architecture
Schools Project
Conclusions and Recommendations
Definition and Introduction
• DSL stands for Digital Subscriber Line and is a modem
technology that converts the existing single copper twistedpair PSTN lines into high-speed internet (multimedia: audio,
video, data, …) access paths.
• xDSL Flavors: The x in xDSL is simply a way of notating the
variety of flavors of DSL as SDSL, HDSL, ADSL, G.lite,
G.SHDSL, …. Each flavor has its own limitations,
capabilities, and offers different speeds
• The "S" in SDSL stands for symmetric which means that up
and down streams are the same speed
Definition and Introduction (cont)
• SDSL is targeted to business market because so many
applications require high-speed connectivity for data
applications.
• The “A" in ADSL stands for Asymmetric which means
that the down stream is higher than the upstream
• ADSL asymmetric speeds are predominantly targeted to
the consumer market
• The “H" in HDSL stands for High data rate. HDSL is One
of the most mature of all DSL technologies and it is the
most common way of provisioning E1(2Mb/s) Lines
xDSL and ADSL History
1985 -Bell Labs discovers a new way to make traditional copper wires support
new digital services
1990 --
Phone companies start deploying High-Speed DSL (HDSL) to offer T1 (E1)
service on copper lines without the expense of installing repeaters.
Phone companies begin to promote ADSL as a way to enter the video
market.
1995 -Innovative companies begin to see ADSL as a way to meet the need for
faster Internet access
Now --
ADSL is being deployed for fast Internet access across the United States.
xDSL Benefits
• DSL can be used to transmit applications between
users
• Video conferencing
• IP Faxes
• Remote connections to a corporate LAN
• Fast Internet access
• Interactive multimedia
XDSL Deployment Hurdles
• State of the Local Loop
– Load coils and Bridge Taps
– Differing wire gauge used in lines
– Wide Noise and Crosstalk
• Line lengths and insulation
• Spectral interference
• Interoperability and Standards
• Pair Gain Systems
XDSL Deployment Hurdles (Cont)
• Loop Testing and Qualification
–
–
No centralized testing mechanism
Automated Testing of loops
Jordan Internet Project
• Upon the recommendations of his Majesty
King Abdullah the 2st , the Jordan internet
project (IP/ATM) was lunched in 1/12/2000
covering Amman area as a first stage
• At the mean time this project covers all over
Jordan supporting all kinds of internet and
leased line services
JT IP/ATM Network
JT ATM backbone the
3 sites are in Amman
Governorate
Sites
E1s
E1s
ADSL
ADSL
ADSL
ADSL
SDSL
SDSL
TLA-ALI
7470
ABDALI
7470
STM-4
TLA–ALI
POPs
TLA-ALI
ASAMs
STM-4
ABDALI
POPs
ABDALI
ASAMs
STM-4
CENTRAL
7470
CENTRAL
ASAMs
ADSL
ADSL
SDSL
CENTRAL
POPs
JT Data Network Services
• TDM services: Analog and digital P2P or
E2E Leased Lines from 9.6 kb/s up to E1,
the most used interfaces are: V.35, G.703
• ATM services: SDSL and SHDSL leased
lines, Frame Relay and ADSL
• Switching services: ISDN (BRI and PRI)
xDSL Architecture
SDSL Architecture
WWW
SDSL
DSLAM
Data
Network
SDSL
SDSL
ADSL Architecture
DSLAM
Splitters
Card
Data
Network
Splitter
MDF
ADSL
PSTN
ADSL Architecture (cont)
•ADSL consists of the local loop, an ADSL modem at both
ends of the loop; that is, one at the (CO) and one at the CP and
a (POTS) splitter also at both ends of the loop
•DMT: divides the available twisted-pair spectrum above
25KHz into 256 downstream subchannels of 4KHz each. QAM
is then applied to each subchannel according to its individual
performance
ADSL Architecture (cont)
Mbit/s
kbit/s
Mbit/s
ADSL
Modem
ADSL
Modem
Line
POTS
Filter
POTS
Filter
POTS
Linecard
Exchange End
Customer End
kbit/s
Full-rate ADSL
• Full-rate ADSL boasts data rates ranging from
1.5 to 8 Megabits per second “downstream”
from the Internet to your computer
• “Upstream” data rates from your computer to
the Internet are as high as 1 Mbps
• Potential data rates decrease with increased
distance from the phone company’s CO
(central office)
• Costs for the service are more expensive than
the new, lower data rate “G.Lite” ADSL
ADSL Reliability
• One strength of phone providers is their small
number of service outages per year, something
cable companies cannot claim.
• Even if the power goes out, you will still be
able to make phone calls.
• Unlike cable modems, your connection speed
will not be affected by how much bandwidth
your neighbors use.
ADSL target customers
Many target applications for ADSL are naturally
asymmetric as:
• Internet and remote LAN access
• Movies and television: Video on Demand
• Distance learning: schools
• Interactive games and File Download
• Web Surfing and Home shopping
• Video conferencing
ADSL statistics
Year
Users
2001
700
2002
2100
2003
3000
•To meet the specific needs of both
the home and business users,
ADSL is available in two offers,
512/128Kbps & 1M/256Kbps
•Total No. of ADSL customers is 3000
•1000 are schools
•2000 are home and business customers
ADSL benefits
• Superior speeds and flexibility
• An 'always on', 'always available', 24/7
connection with flat rate charging
• It's all available at an acceptable low cost.
• Freedom in Choice among several ISP’s
• High data security
How do I get ADSL?
• ADSL Service Providers
• Local phone companies (JT)
• Local Internet service providers
• ADSL Modems: From (JT)
NOC
ADSL Order Handling Process
Signed
Contract
Account
Manager
Account
Manager
Chooses
appointme
nt with the
customer
Fills in
work order
and sends
it to DSD
DSD team
KEY
RAU
RAU
Sends
work order
to NOC
DSD team
At the customer premises,
checks completion of the
installation modifications &
installs splitter & modem
BAS: Broad Band Access Server
NOC: Network Operation Center
LLP: Local Loop Plant
LL : Leased Line
ISP: Internet Service Provider
DSD: Digital Services Department
IU : Intervention Unit
OSP: Out Side PLant
DSD
coordinator
Sends work
order to RAU
and DSD
team
Customer
Tests ASDL with
laptop and fills in
intervention
report
DSD coordinator
Checks
Intervention
Report, sends it to
Account Manager
Signs
Intervention
Report
Configure BB
(ATM/IP)
parameters
according to
MDF and ISP
DSD team
Jumpering at
MDF according
to BB
parameters
DSD team
Sends
Intervention
Report to DSD
Coordinator
Account Manager
Updates
Customer
Account
- Operations and Maintenance
Process
- Billing Process
- Customer Care Process
- CCBS
ADSL Fault Handling
•
•
•
•
•
•
Customer reports problem to Hotline team
Open trouble ticket By Hot line team
1st level diagnosis by Hot Line
Technical diagnosis by (DSS, NOC, ATM)
Problem localization and repair
Close trouble ticket by Hot line and contact
the customer
ADSL and ISPs
• ADSL only connects you to your ISP, it is
your ISP that connects you to the Internet. So,
to maximize the benefits of a fast ADSL
connection, your ISP must be up to the task. A
fast connection is not much use if your ISP is
the weakest link in the communications chain
ADSL Loop Qualification
• ADSL DMT line code is flexible and its
performance is very dependent on the loop
length and noise conditions which is
measured by special xDSL line testers:
• Attenuation: 57@300kHz
• Noise: SNR, Cross talk (FEXT), impulse N.
• Loop resistance and insulation
ADSL vs. Other Modems
Full ADSL
G.lite ADSL
ISDN
56K
28.8K
14.4K
0
2000
4000
6000
8000
Maximum Speed - Actual speed will vary
Schools Project
Ministry of Education Requirements
• The Ministry has established ambitious goal to have
every school connected with high bandwidth enabling
both teachers and students to have affordable Elearning opportunities
• This project, once materialized, will enable 3000
nationwide schools to enjoy both inter/intranet
platforms
• A broadband solution is required, in order to manage
properly the E-learning applications
JT’s Proposal: Introduction
The success of educational reform is
ultimately dependent on the effective use of
E-learning, JT is therefore eagerly
prepared to meet the challenges set forth by
the Ministry of Education in its reform
process
Success Factors of the Project
The following are recognized as being the
success factors of the project
• Timely implementation of project
• Evolution of bandwidth requirements /
Scalability
• Coordination between the two parties
First Success Factor
Timely implementation of project
JT understands that timely implementation is
a crucial element for the success of the
project, the following is JT’s proposed
implementation plan:
• 500 schools to be connected on or before
end of September 2002
• 200 schools to be connected thereafter
every month
Second Success Factor
Evolution of bandwidth requirements
• The bandwidth requirements are dynamic
and are dependent on variables such as
number of PCs, workload and applications
utilized
• The proposed solution is scalable and caters
for the evolution of bandwidth requirements
Third Success Factor
Coordination between the two parties
• Close coordination must be maintained
between the two parties in order to oversee
the successful implementation of project
• Contact officers to be nominated from both
parties
Technical Solution
• DSL technology will be implemented over copper
as optimal solution for MOE’s current and
foreseen future requirements
• The bandwidth made available by this technology
will enable the following usage profiles:
 Email and Internet
 E-learning
 Video Conferencing
Jordan Schools Project
• An agreement was signed with the MOE in January
2002 by which JT will provide Internet access
service for about 3000 public schools via ADSL or
LL connectivity
• Part of the project works is the internal wiring
concerning MOE sites
• MOE authorized JT to employ electrical subcontractors to do this work and to pay the expenses
on behalf of MOE
• MOE will repay these expenses for JT
Jordan Schools Project (cont)
Internal Wiring for Schools
One pair
terminal
Internal
wiring
twisted pair
JT box
Feeding
Hole
Entrance
Power
socket
RJ11
socket
Earthen
System
Jordan Schools Project (cont)
• Schools project started in Feb. 2002
• 3000 schools are to be connected via ADSL
& SHDSL (ATM) for Internet & E learning
• Up to now 1076 schools are already
connected to Queen Rania Center which
acts as an ISP
Jordan Schools Project (cont)
• School Project Progress Report Summary up
to 23/2/2003
Total Qualification
1589 Qualified
Total Survey
1147
Total Internal Wiring
1147
Total Activation
1076
Jordan Schools Project (cont)
Schools Project Follow up:
• Regular weekly meeting with Marketing sector to
discuss the progress report and the obstacles for this
project
• Regular meetings every two weeks with MOE and
marketing sector to address all obstacles
IP connectivity using DSL over Copper
Broadband Switch Network ( ATM)
Queen Rania
Center
Servers
&
Routers
High-Capacity Backbone Links
Network
Management Center
ADSL
Access Network
New Optical
Cable
Local Exchange
ADSL
POTS
Schools
Internet Access (ADSL)
JT Network Management
Centre
PSTN
Filter
Hashem
IP
ADSL
LT
ATM
NT
NT
Filter
ADSL
LT
I* Bus
155 Mbit/s
BAS
ASAM
Broadband POP
Queen
Rania
Center
(ISP)
WWW
ADSL
modem
Network Architecture
JT access
network
WWW
outside Jordan
Through Hashem
School
School B
Optical
STM- 1 ATM
STM- 1 ChE 1
MOE
Directorate
Optical Fiber
8 Mbps
JT Data backbone
Network
Queen Rania
Center
Maintenance Measure
• Jordan Telecom undertakes to maintain the
network under its responsibility for the
duration of the contract
• The project will be supported by 24X7
supervision,
Hotline
&
qualified
intervention DS teams
Conclusions and Recommendations
•
•
•
•
Lowering xDSL prices to increase spread
ISP bandwidth must be sufficient
Creating new xDSL profiles (offers)
Make realistic and profitable product and service plans
– Do customers exist for this product or service?
– Are they willing to pay a compensatory price for the
product at projected costs?
– Why is the product competitively advantageous? What
are the competitive products or services?
Questions, Comments, Suggestions?
Thank You