I don't think calls for prayer (loud) should be allowed for any religion - all it does is annoy other religions and make competition which can spiral easily out of control.
I believe in solidarity, and equality and everything, but I don't think it is necessary. If you want to go to the mosqu, church, temple, synagogue, or any place of worship, you should just remind yourself to go. There is no need for evangeliism, because if you look at history, forcing people to convert beliefs has only ended in tragedy. All religions are pretty much the same, so everyone should be allowed to do their own thing, but of course be aware that we live in a multicultural environment.