A/57/292 20. Communications received from Governments contain information in response to urgent communications and other letters sent by the Special Rapporteur. Type of communications sent by the Special Rapporteur 21. The Special Rapporteur maintains various types of communications with Governments under the resolutions that established her mandate and the type of cooperation that Governments are expected to provide to the office of the Special Rapporteur on the human rights of migrants. In particular, the Special Rapporteur has established three main types of communications distinguished by their informational content, their nature as a request for cooperation with her office, or communications in which the Special Rapporteur requests the urgent intervention of a Government to prevent or, failing that, to investigate violations of the human rights of migrants. In all of her missions, the Special Rapporteur has initiated dialogues at three levels, namely, with Governments, civil society, and non-governmental organizations and migrants themselves, as recommended in the resolutions that established her mandate. The information obtained from these sources has broadened the understanding of the Special Rapporteur and has provided a complete picture of the situation in a country. Visits 22. Pursuant to the resolutions establishing her mandate (1999/44, 2000/48, 2001/52, 2002/62), the Special Rapporteur undertook four missions during the first three years of her mandate. She visited Canada in 2000 (see E/CN.4/2001/83/Add.1) and undertook a mission to Ecuador in 2001 (see E/CN.4/2002/94/Add.1). In 2002, she visited Mexico, the border between Mexico and the United States of America, and the Philippines. The reports on these recent missions will be submitted to the Commission on Human Rights at its fifty-ninth session. 23. The Special Rapporteur considers that visits to a country are a good way of monitoring the specific situation in a country in order to be able to provide the Commission with an overview of the situation. She is convinced that to visit a country is to open up a dialogue whose purpose is to identify the best practices and areas in which the protection of the human rights of migrants can be improved. 8 24. The table contains information concerning the activities of the Special Rapporteur during her mandate.