BT Private Circuits Service Description
MegaStream Ethernet
and BT Enterprise
Ethernet
Outline of Service
MegaStream Ethernet & BT Enterprise Ethernet offer
connection oriented ethernet data services that operate at
circuit bandwidths from 0.2Mbit/s to 100Mbit/s. They enable
customers to transport data between their business premises
and interconnect Local & Wide Area Network equipment
using 10Mbit/s, 100Mbit/s and 1Gbit/s ethernet interfaces.
BT Enterprise Ethernet offers fixed circuit bandwidth from
0.2Mbit/s to 1.6Mbit/s and MegaStream Ethernet offers
flexible circuit bandwidth from 2Mbit/s to 100Mbit/s.
MegaStream Ethernet can be used in isolation, but BT
Enterprise Ethernet must always be used in conjunction with
MegaStream Ethernet.
Key Features and Availability
MegaStream Ethernet and BT Enterprise Ethernet both
provide the following key features:
• Transparent transport of customer’s data between two
ethernet ports
• Delivery via a compact NTE (Network Terminating
Equipment) with either:
• • Pre-configured 10Mbit/s or 100Mbit/s interface (no autonegotiation)
• • Gigabit Ethernet interface (MegaStream Ethernet only)
• No manual configuration of ethernet addresses required on
10/100 interfaces by the customer – a self learning bridge
function is used
• Meets UK/International standards (IEEE 802.3 and 802.1)
including support of extended packet sizes
• When Gbit/s ethernet (GbE) access is used, VLAN tagging
will be used by BT
• Guaranteed, bi-directional, symmetrical uncontended
bandwidth. No over subscription/burst above contracted
circuit bandwidth is available
• Recommended maximum number of MAC addresses per
ethernet port is 200, to maintain throughput performance
MegaStream Ethernet has the following additional key
features:
• Provides point to point and point to aggregate (channelised)
data service options. This enables customers to choose
either a single site to site connection to be set up, or a
Head Office to branch network can be constructed using a
single NTE interface at the Head Office which is able to
support a number of remote sites using Ethernet interfaces.
A maximum number of 15 remote sites can be connected to
a single ethernet interface (aggregate) dependant on fibre
access speed and overall network design. Where more than
16 sites are required (up to a maximum of 400 sites) to be
connected in a single network, a Gigabit Ethernet (GbE)
access must be used.
• Choice of fibre access speeds from 10Mbit/s through to
1Gbit/s capacity (minimum access speed of 10Mbit/s
applies)
• Scalable bandwidth across the core network in increments
of 2Mbit/s, 5Mbit/s and 10Mbit/s up to the maximum
100Mbit/s capacity
• Resilient access options are available. The first offers
resilient fibre access delivery between the single BT node
and customer NTE, and the second offers two standard
access circuits delivered between two different BT nodes
and two customer NTEs. Both are available as priced
options.
• GbE access is not available from all charging points
BT Enterprise Ethernet has the following additional key
features:
• Provides a point to aggregate data service, where the
aggregate end must always be a MegaStream Ethernet
access circuit. A maximum number of 15 BT spoke sites,
whether they are BT Enterprise Ethernet or MegaStream
Ethernet circuits can be connected to a single 10Mbit/s or
100Mbit/s interface and a maximum of 400 BT Enterprise
Ethernet and MegaStream Ethernet circuits can be
connected to a 1Gbit/s interface.
• Available from selected BT exchanges
• Choice of copper access speeds from 0.2Mbit/s to 1.6Mbit/s
– subject to availability. Please ask you BT Account
Manager, Sales Manager or Authorised Dealer to confirm
availability, or alternatively you can visit us for further
contact details at www.bt.com
Customer and Service Management
MegaStream Ethernet and BT Enterprise Ethernet will be
ordered using Retail Private Circuit ordering processes.
Billing for the MegaStream Ethernet and BT Enterprise
Ethernet services will follow Private Circuit billing procedures.
Quality of Service Parameters
MegaStream Ethernet
• Target availability of 99.95%
• TotalCare maintenance within price
• Target provision times (all subject to survey):
• • Standard & Secure Access 60 days
• • Subsequent/additional circuits between existing NTEs of
10 days or less
• • For all other arrangements please refer to the BT UK Price
List for Performance Scheme for Provision
• Maximum latency of 30ms
• Reduced Charges Scheme (RCS) to apply for provision
and repair
BT Enterprise Ethernet
• Target availability of 99.87%
• PromptCare maintenance within price
• Target provision time (subject to survey) 25days
• Maximum latency of 42ms
• Reduced Charges Scheme (RCS) for provision and repair
Pricing & Discounts
MegaStream Ethernet pricing will consist of one off
Connection Charges and Annual Rental charges, dependent
on the chosen fibre access bandwidth for the site, plus a
Connection Charge and Annual Rental charge for the end to
end circuit bandwidth between each customer site. BT
Enterprise Ethernet pricing will consist of a one off Connection
Charge and Annual Rental charge dependent on the chosen
circuit bandwidth. There is no end to end circuit charge for
BT Enterprise Ethernet circuits as there is for MegaStream
Ethernet.
Metro and National Pricing structures apply with full details in
the BT Price List
Metro Pricing applies where both customer sites are served by
the same BT charging point or any two charging points within
defined city boundaries
Where customer sites are not served by the same BT charging
point or two charging points within the defined city
boundaries, a National pricing structure applies
MegaStream Ethernet access pricing is based on the radial
distance between the customer site and the BT charging point
Pricing for the circuit bandwidth between charging points is
route based and is distance independent
Internal and External shifts are allowed (subject to survey)
Refer to the BT Price List for current charges and Metro areas
Offices worldwide
Connection Charges
0.2Mbit/s BT Enterprise Ethernet
0.4Mbit/s BT Enterprise Ethernet
0.8Mbit/s BT Enterprise Ethernet
1.6Mbit/s BT Enterprise Ethernet
10Mbit/s Standard MegaStream
Ethernet access
30Mbit/s Standard MegaStream
Ethernet access
100Mbit/s Standard MegaStream
Ethernet access
100Mbit/s Secure MegaStream
Ethernet access
100Mbit/s Resilient Access Option 2
1Gbit/s Standard MegaStream
Ethernet access
1Gbit/s Secure MegaStream
Ethernet access
1Gbit/s Resilient Access Option 2
Circuit bandwidth charge
Annual Rental Charges
0.2Mbit/s BT Enterprise Ethernet
0.4Mbit/s BT Enterprise Ethernet
0.8Mbit/s BT Enterprise Ethernet
1.6Mbit/s BT Enterprise Ethernet
10Mbit/s Standard MegaStream
Ethernet access
30Mbit/s Standard MegaStream
Ethernet access
100Mbit/s Standard MegaStream
Ethernet access
100Mbit/s Secure MegaStream
Ethernet access
100Mbit/s Resilient Access Option 2
1Gbit/s Standard MegaStream
Ethernet access
1Gbit/s Secure MegaStream
Ethernet access
1Gbit/s Resilient Access Option 2
Circuit bandwidth charge 2Mbit/s
4Mbit/s
6Mbit/s
8Mbit/s
10Mbit/s
15Mbit/s
20Mbit/s
25Mbit/s
30Mbit/s
35Mbit/s
40Mbit/s
then 10Mbit/s increments up to a
a maximum of 100Mbit/s
Miscellaneous Charges
Circuit bandwidth regrade charge
Fibre access speed upgrade charge
Standard access to Secure access & Resilient access option 2
upgrade charge
Resilient access option 2 maintenance charge
Note: Upgrades between some fibre access speeds may incur a break
in service
Discount Schemes
MegaStream Ethernet is available on 3&5 year Digital
Individual Term Contracts and NetStream Enterprise and
NetStream Corporate contracts. BT Enterprise Ethernet is not
eligible for inclusion in any BT discount schemes.
Terms & Conditions
MegaStream Ethernet and BT Enterprise Ethernet are provided
under BT’s ‘Conditions for Private Services’. Standard
MegaStream Excess Construction charges apply to all
MegaStream Ethernet and BT Enterprise Ethernet services, as
shown in the BT Price List, Section 45, Part 1. All MegaStream
Ethernet and BT Enterprise Ethernet services are offered with
a minimum of a 1 year term contract. This is payable
irrespective of any early termination of service. MegaStream
Ethernet Circuit bandwidths can be upgraded at any time, to a
maximum of one upgrade per month per circuit. Circuit
bandwidths can be downgraded to a lower speed, however
only one downgrade per circuit is allowed in any 12 month
period. Temporary MegaStream Ethernet fibre access is not
available. All MegaStream Ethernet and BT Enterprise
Ethernet services are sold ‘subject to survey’.
To find out more about MegaStream Ethernet and
BT Enterprise Ethernet, please contact your
BT Account Manager, Sales Manager or Authorised
Dealer, or call us on Freefone 0800 800 977. You
might also like to visit our website at www.bt.com
The telecommunications services described in this publication are subject to availability and may be modified from time to time. Services and equipment are provided subject to British Telecommunications plc’s
respective standard conditions of contract. Nothing in this publication forms part of any contract.
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