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BT announces "end" of PSTN & move to "21st century network" IP network

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Old June 9th 04, 11:34 AM posted to uk.telecom,uk.telecom.broadband
Sunil Sood
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Posts: 1,590
Default BT announces "end" of PSTN & move to "21st century network" IP network

- Mass migration of customers from PSTN to IP based network to begin in 2006
- Majority of customers' PSTN services on IP network by 2008
- Trials of voice services on IP network and fibre to the premises announced

Over the next five years 21CN will transform BT's business and its cost
base, removing duplication across the current multiple service specific
networks and creating a single multi-service network. Total capital spend
on the 21CN transformation will be within the previously announced BT
capital expenditure envelope of 3 billion per annum. From this year about
two thirds of the annual spend is directed to 21CN and other new and
intermediate technologies and this proportion is expected to increase. That
investment in future infrastructure will enable BT to deliver growing cash
savings which are expected to amount to 1 billion per annum by 2008/9.

An early deliverable of this transformation is the first phase of the
migration of services from the existing UK public switched telephone network
(PSTN) to a multi-service internet protocol (IP) based network which will
carry both voice and data services. As a precursor to large scale migration
of voice and other PSTN based services from 2006, the first stage will
involve the bypass of the core PSTN network link between two major network
nodes at Cambridge and Woolwich. An extension is planned later to Faraday
exchange in London.

As a precursor to large scale migration of voice and other PSTN based
services from 2006, the first stage in the migration pilot will involve
the bypass of the core PSTN network link between two major network nodes at
Cambridge and Woolwich. An extension is planned later to Faraday exchange
in London.
From October 2004, BT will divert voice calls between these network nodes to
the 21CN specific IP network. Calls will be carried using IP packet
technology rather than the circuit switched technology used on PSTN. The
switch-over will be seamless from the customer's perspective and service
quality will be the same or better than on PSTN.

The next stage of this pilot involves the installation of new equipment at
18 exchanges in South East London, Kent and East Anglia - which are
connected to the network nodes in Cambridge and Woolwich. This equipment,
known as multi service access nodes (MSANs), will carry voice and data
services onto the core IP based network, initially for 1,000 customers by
January 2005.

Paul Reynolds said: "Today the 21CN vision starts to become reality. This
is among the most important and ambitious infrastructure transformation
programmes in communications anywhere in the world and will put Britain at
the forefront of communications innovation.

"But 21CN is more than a next generation network. It's about providing and
supporting the next generation of services for all our customers; it's about
supporting and generating revenues and profits for shareholders, and it's
about supporting and delivering for the communications industry and the
economy as a whole."

In addition to making broadband available from exchanges serving 99.6 per
cent of people by summer 2005, BT is aiming to have broadband dialtone
available to most of its customers in the UK in five years time. Customers
will be in control of their own services and will immediately be able to
switch the line to broadband use themselves without requiring physical work
at the exchange, whatever device they use to access the broadband network.

BT also today announced trials to test the technical and commercial issues
associated with the possible deployment of fibre optic cable in the UK local
access network. These limited trials are looking particularly at the
economics associated with providing services to new build and greenfield
site developments.

BT today also announced 21CN programme fibre to the premises trials at
Martlesham Heath, Suffolk; at Kents Hill, the Bolbeck Park and Walnut Tree
developments in Milton Keynes; and at the Waterfront Studios business
centre, at Silvertown in London's Docklands.
The trials will provide telephone and broadband services over fibre for up
to 1,500 homes and businesses. The first trialists will have their fibre
lines installed and working in October 2004 and the trial will run until
September 2005.

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