http://pdf.allconferencecalls.com/country/language/type/

country is 3 letter iso country code (e.g. GBR)
language is 2 letter iso language code (e.g. en)
type is 'enhanced', 'cust_ffwwa', 'cust_wwa', 'customer', 'p_u_g_ext', 'acc_guide', 'acc_list', 'p_user', 'o_user', 'e_user', 'ffwwa', 'wwa', 'premium' or 'p_u_g_e_u'