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  1. 1. Unstructured Supplementary Service Data (USSD) Prepared by: Somashekhar Sajjan 1MobiMedia Confidential MobiMedia
  2. 2. Contents Introduction Advantages Examples 2MobiMedia Confidential MobiMedia
  3. 3. Introduction Unstructured Supplementary Service Data (USSD) is a protocol used by GSM cellular telephones to communicate with the service providers computers. USSD can be used for WAP browsing, prepaid callback service, mobile-money services, location-based content services, menu-based information services, and as part of configuring the phone on the network. USSD messages are up to 182 alphanumeric characters in length. 3MobiMedia Confidential MobiMedia
  4. 4. Advantages Unlike Short Message Service (SMS) messages, USSD messages create a real- time connection during a USSD session. The connection remains open, allowing a two-way exchange of a sequence of data. This makes USSD more responsive than services that use SMS. 4MobiMedia Confidential MobiMedia
  5. 5. How it works The user composes a message—usually rather cryptic—on the phone keyboard. The phone sends it to the phone company network, where it is received by a computer dedicated to USSD. The answer from this computer is sent back to the phone. The answer could be seen on the phone screen. 5MobiMedia Confidential MobiMedia
  6. 6. Examples Airtel Money in India SharEpay WING in Cambodia SWAP Mobile in South Africa Mobipay in Spain M-Pesa in Tanzania mPay in Poland use USSD Facebook can be accessed through Airtel, Docomo without any GPRS using USSD ( phones.html 6MobiMedia Confidential MobiMedia
  7. 7. Short Message Peer-to-Peer (SMPP) Introduction Advantages Technology Examples 7MobiMedia Confidential MobiMedia
  8. 8. Introduction The Short Message Peer-to-Peer (SMPP) protocol is a telecommunications industry protocol for exchanging SMS messages between SMS peer entities such as short message service centers and/or External Short Messaging Entities It is often used to allow third parties (e.g. value-added service providers like news organizations) to submit messages, often in bulk. 8MobiMedia Confidential MobiMedia