You can get temporary local SIM card at local service providers found at busy shopping places and main centers. Eitsalat and Du are the most prominent service providers which give multiple choices of pre-paid calling and internet usage. Also, there are tourist SIM cards available at the airport or the hotels you choose to say which are specially designed for tourists with special offers.
You can call to your home country and international calls but the rates would be exceptional. It is always good to use wifi connection available at the public places and restaurants to use Whatsapp and Skype to avoid large bills on your phone.