The invention concerns methods and systems for enabling telephones to be controlled through computer systems. Employing the invention involves the use of one or more control interfaces which are capable of being used to interact with a computer system or network, each interface comprising sheet material such as paper which has coded data printed on it and which allows it to be used to interact with the computer system by use of a sensing device operated by a user. Through this interaction, data from the control interface can be transmitted to the computer system to effect an operation relating to the functioning of the telephone. In this way, the computer system can invoke functions such as the making of outgoing calls, and the receiving and sending of text information such as short messages or retrieved telephone numbers.