ICUC service works with hand held personal digital assistant PDA, Palm Pilot, Palm VII, Palm V minstrel modem, RIM Blackberry 950 electronic mail, WebLink Wireless, AirTouch Communications, Worldcom Skytel SkyWriter Motorola PageWriter 2000x, Timeport, V100, V200 and T900 alpha keyboard pager, numeric beeper, alphanumeric pager, Handspring Visor, wireless data or wireless Internet cell phone. ICUC service works with the Timex / Motorola BeepwearPRO (beepwear pro) text beeper watch using the Skytel Skyword service. With ICUC paging services you can perform two way text paging, pager, beeper, voicemail, email and instant message functions with page devices and non pager devices. ICUC service can turn just about any wireless device into an instant contact pager with Internet e-mail, text messaging, SMS and voice mail (voicemail) capability. ICUC can assign any telephone number to any laptop or handheld computer or analog/digital PCS cellular wireless modem or handheld device. ICUC services are compatible with evolving ITU, VoIP, SIP, IETF, ICANN and FCC Electronic Number (ENUM) and e164 (e.164) ARPA DNS NAPTR and UDDI / LDAP directory service proposed Internet standards.