First call "Azan" was in Madina .
Athan.
The Call to Prayer is associated with various religions as it is often the means to let people know it is prayer time. In Christianity the church bells are the call to prayer and for Jews, it is the shofar, which is a horn that is blown.
prayer
prayer
A prayer call is to tell us that the pray is coming. Second though prayer call is the light of heart for human. The pray its self is to call human to come close to God (Allah). To hear this prayer call, he or she listen its carefully and understand it, they will know that some one watch them. They is Allah.
The chazan.See also:More about Jewish prayer
A minaret is a prayer tower, where the call to prayer is broadcast.
The person who makes the call to prayer is called the mu'azzin.
Announcement or Call To Prayer
Communal
A call to prayer is a public proclamation, which is made five times a day in Muslim societies to mark out the ordained occasions for worship in mosques.
The tower was used as a high place to call for prayer. Muslims pray 5 times a day, and the call for prayer was made so as to announce the time for prayers. It is now modernised with loud speakers and the call for prayer is made from inside the mosque.
In English you call him: leader of the mosque. But in Arabic you call him: Imam ul-masjid. However, most people just call him : Imam.