The communication infrastructure is fairly sophisticated in Argentina and you'll have no problems contacting home by phone, fax or internet. Postal services are a little less reliable and letters/parcels can take an extremely long time to reach their destination. It's possible to find phone cards for long distance calls to Europe and the US for 2-3 US$ for one hour. There are hundreds of cyber cafés with good connections in Buenos Aires and indeed throughout the towns and cities of Argentina (although connections in the north can be a little less reliable). The price for an hour varies but is usually somewhere between 1.5-2 US$. Furthermore, AMAUTA students enjoy free internet access in the school.
TRAVEL IN ARGENTINA