USSD

USSD is similar to Short Messaging Service (SMS), but,unlike SMS, USSD transactions occur during the session only. With SMS, messagescan be sent to a mobile phone and stored for several days if the phone is notactivated or within range.

The Wireless Application Protocol (WAP) supports USSD. USSDis defined in the GSM standard documents GSM 02.90 and GSM 03.90.

Read more about USSD: - Mobile USSD provides additional information. - MobileIN.com also provides additional information. - SarchNetworking.com offers a section about "Wireless in the Enterprise."

Do you have something to add to this definition? Let us know. Send your comments to techterms@whatis.com

Digg This!     StumbleUpon     Del.icio.us

RELATED CONTENT Wireless LANs -- 'CCNA Official Exam Certification Library, Third Edition,' Chapter 11 Learn about wireless LAN (WLAN) technology in preparation for the CCNA exam in this excerpt from the CCNA Official Exam Certification Library, Third... Vendors at Interop in a scrum over WLAN architecture At Interop 2008, a panel discussion on WLAN architecture alternatives turned into an argument between Aruba Networks and Extricom over radio channel... Upgrading to 802.11n: Key considerations This 802.11n checklist will help you determine where, how, and when to migrate to 802.11n Wi-Fi, and how to maximize benefit and minimize pain.

RELATED GLOSSARY TERMS Terms from Whatis.com − the technology online dictionary 802.11a  (SearchNetworking.com) CDPD  (SearchNetworking.com)