ICUC service works with Sprint PCS, Nextel, VoiceStream Wireless, Verizon Wireless, Cingular Wireless, GoAmerica, Minstrel, Sierra Wireless, Worldcom, Motorola, Neopoint, Nokia, Samsung and many other PCS digital cellular telephone, analog cell and cellular phone, wireless digital, wireless analog common carriers and wire line / RF / Radio / Cable TV carriers and networks. ICUC provides Short Message Service (SMS), e-mail, electronic mail, instant message, immediate messaging, instant contact, Unified Message Service (UMS) and Location Services (LS) using these networks and devices. ICUC enables l-commerce and m-commerce solutions using the area code and phone number or telephone numbers as the voicemail, message or email address. ICUC services are compatible with evolving ITU, IETF, ICANN and FCC Electronic Number (ENUM) and e164 (e.164) ARPA DNS NAPTR and UDDI / LDAP directory service proposed Internet standards.