BT LES = BT LAN Extension Service
BT’s LAN Extension Service provides high speed dedicated links ｒunning between your dispersed sites, connecting together LANs at speeds of up to 1,000Mbps with Ethernet, Fast Ethernet and Gigabit Ethernet interfaces.
http://www2.bt.com/static/i/media/pdf/lan_san_broch.pdf
BT WES = BT Wholesale Extension Service (replaced by EAD)
A high speed, point-to-point data circuit provided by BT Wholesale which provides a secure link between the point of presence of a CP and a third party customer site.
http://stakeholders.ofcom.org.uk/telecoms/policy/bt-undertakings/glossary
BT EAD = Ethernet Access Direct (EAD) provides permanently connected point-to-point
high speed data circuits between sites.
http://www.openreach.co.uk/orpg/home/products/ethernetservices/wholesaleextensionservices/wes/downloads/WES_BES_WEES_withdrawal_fact_sheet.pdf
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