eircom i-stream ADSL

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eircom i-stream ADSL

• Karl Jeacle
• IP Network Services

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Contents

• slide disclaimer! ?
• i-stream product overview
• ADSL components
• Ethernet vs USB
• Modems vs Routers
• End-to-end DSLAM ATM BAS
• PPPoE
• contention rates / bandwidth / etc

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i-stream products

• i-stream SOLO
• Single user, 512K, 3GB
• i-stream MULTI
• Four users, 1Mb/s, 6GB
• i-stream ENHANCED
• Unlimited users, 1Mb/s, no limit

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Prequalification
To qualify for ADSL, much more than distance has
to considered, meaning every customer will go
through a pre-qualification process. The
pre-qualification process involves

• Customer telephone lines are tested on a regular
  basis based on criteria including
• The distance of the customers premises from the
  telephone exchange. The bandwidth available
  degrades with the distance travelled.
• The condition of the telephone line.
• The result of these tests are combined to provide
  an indication of the lines capability to carry
  ADSL services. This indicator is represented by
  either a PASS or a FAIL flag, where a PASS
  flag indicates that a line will be capable of
  getting ADSL, and a FAIL flag indicates that a
  line will not be capable of getting ADSL. The
  prequalification indicator is then loaded into an
  industry standard prequalification database which
  is used by DSL operators to check the status of
  customers lines as required.
• How reliable are the ADSL prequalification
  results?
• The prequalificationification test is a
  predictive tool and is not an absolute guarantee
  that the line tested will support ADSL service.
  Service cannot be proven until the installation
  on site has been completed. Prequalification has
  nevertheless proven to give a reliable and
  accurate indication that lines passing can
  support service.

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ADSL Components
Customers who have Win95/Mac/Unix should use the
Ethernet ADSL Modem. Customers using this modem
will need to have a Network Interface Card
installed.
Customers who have Windows 98 or higher can avail
of the USB ADSL Modem.
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i-stream SOLO
These accounts are designed to connect one stand
alone system, if customers try to connect more
than one system then they breach the terms and
conditions of service and risk disconnection. RTM
will not provide technical support for customers
in breach of TCs.
Win 98/2000/NT/XP
Win95/Mac/Unix
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i-stream SOLO
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i-stream MULTI
This account is designed to connect 4 systems,
each system will be running Enternet 300 and will
have their own username and password for access.
Connecting more 4 systems breaches the terms and
conditions of service and risks disconnection.
RTM will not provide technical support for
customers in breach of TCs. The 4 systems share
the bandwidth on the line.
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i-stream MULTI
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i-stream ENHANCED
This account is designed to connect infinite
systems. The router will make the connection to
the ADSL service and provide connectivity to all
systems in the LAN.
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i-stream ENHANCED
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ADSL
Customer Premises
Splitter
Original PSTN phone line
Local Exchange
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Frequencies
PSTN
ADSL
ADSL uses higher frequencies than those
traditionally used by the PSTN network. This
allows PSTN and ADSL to operate in parallel. One
analogy is the process is blowing a dog whistle,
the frequency is outside our hearing range and
therefore we can not hear it. ADSL is outside
the PSTN frequency range and therefore does not
interfere. ADSL, by definition, is asymmetric -
this can be a good fit for access to Internet
services, where users typically download more
information then they upload.
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Normal PSTN Line
PSTN Switch
PSTN
MDF
Local Exchange
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eircom i-stream
PSTN Switch
PSTN
MDF
Local Exchange
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PPPoE
PPPoE / EnterNet 300 This software is the
equivalent of Dial Up Networking for ADSL, it
provides username and password authentication
allowing users to log on to the ADSL
service. SOLO and MULTI account users will need
this installed on each system using the service.
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Why PPPoE?

• PPPoE vs PPPoA vs DHCP
• Flexibility of RADIUS
• Ease of integration with existing systems
• Per-customer IP addressing QoS
• Usage-based billing
• Preserves the dial-up experience!

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Contention

• Wholesale ATM bitstream service
• Open to OLOs
• Contention ratio of 241
• i-stream retail service is built on this
• Retail IP service
• Dual 100Mb/s 155Mb/s uplinks from i-stream to
  core eircom IP network
• No IP level restrictions / contention
• 80/20 rule download allowances

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Thanks for listening!Questions welcome