Establishing telephone/data link to various terminals with single call number, exchange involves exchange sending call number plus attribute to computer that derives destination number

摘要

The method involves sending a connection request with a call number to the exchange (1), which sends the call number with a further attribute related to the communications request to a computer unit (4), which derives a destination call number and sends it to the exchange, which makes the connection using the destination call number. AN Independent claim is also included for the following: an exchange for switching telephone or data connections.