Case Study 1

WPD is the electricity distribution company for South West England and South and West Wales. WPD deliver electricity to 2.5 million customers over a 26,000 sq km service area.
The company operates one major Control Centre in Cardiff which has responsibility for all 132kV, 33kV and 11kV networks operated throughout the company's area.
In June 2006 Cherry & White were invited to tender for a pilot network implementation which would provide more resilience and security to the existing fibre network and a vehicle for integration of potentially some 103 hill top base stations. The geographical spread for the networks covers the South West of England and South Wales.
The tender was successfully won in July 2006 and design, implementation, training and commissioning were achieved by the end of September 2006.
Following the successful implementation, the second phase of contract was awarded in June 2007 with the added objective of interconnection of a new £5 million IP-PMR system consisting of some 2000 handsets. This system provides for voice, mobile ENMAC and rural automation data
The centralised management based upon a CXR SNMPc workstation is implemented via a separate CISCO Ethernet network
Final commissioning was achieved at the end of September 2007 – a repeat of the previous year which facilitated the new IP- PMR system going live for November 2007.
Architecture
The core of the system is based upon the CXR QX3440 TDM PDH High Density Multiplexer which provides DACS(Digital Access Cross Connect System) with full DSO cross connect of backplane capacity up to 128Mbs(see attachments).

Implemented above this with the new extension is the CXR IX4100 Multiservice Access platform providing connectivity to the E3 radio network .
Local networks are supported in redundant ring structures utilising the QX3440 at E1 levels and interconnecting to E1 radios and the IX4100 muxes are utilised to integrate the separate E3 radio networks. These systems replace the previous Nortel networks.

Case Study 2

In January2007 (following an 18 month evaluation programme our company was awarded a contract by BT Global Services for the supply of fibre optic transmission equipment .

This contract was for the DFTS(F) project which supports the MOD’s DII scheme, the largest single IT infrastructure project ever awarded by the MOD.

Scope of the project includes supply of COTS products, consultancy, design and manufacture of specific communication products plus training.