You can call the BT Wholesale CPS provision team on 0870 241 1419* for help checking Calling Line Identifier (CLI) for CPS service providers CPS Operator (CPSO).
Please use our online contact us form for all other questions.
*Our provisioning team can be contacted from 9am to 5pm, Monday to Friday. Sorry, we’re not open UK public and bank holidays. Calls are charged at up to 13p / minute plus your phone company’s access charge.