Telephony
BT WLR Jump Page http://www.openreach.co.uk/orpg/products/wlr/pstn/pstn.do
BT LLU Jump Page http://www.btinterconnect.com/llunbundle/index.htm
BT EMP Jump Page http://www.btinterconnect.com/llunbundle/sitemap/sitemap.htm
EMP Web Services http://www.btinterconnect.com/llu/ss/emp/webservices.htm