(Gayomali, C. 2012).
Sending a text message involves a mediating body that is responsible for sending the SMS to the correct person. This body is called the ‘Short Message Service Center (SMSC)’. When a user sends an SMS it is received by the SMSC who is responsible for sending the received message to the correct mobile phone. For this process, as an appeal is sent to the ‘home location register (HLR)’ to locate the roaming customer. Upon receiving the request the HLR will inform the SMSC about the current position of the customer whether he or she is inactive or active at the moment and where the customer is located. Two actions can then be taken by the SMSC if the customer is inactive the SMSC will withhold the SMS for a period of time and will not send it until the user becomes active. Or if the user is active the SMSC will send the message and then categorize the message as sent upon transfer to the user. (Illinois State University 2014)
Initially, the medium of sending SMS was through the usage of ‘multi-tap’. Each numerical button on the keyboard of a phone had three or four letters of the English alphabet connected to it and each time a letter was needed to written the user had to tap according to the position of the letter on the keypad. . Short Messaging Service - SMS.
ERICSSON. (2012, November 30). Twenty years of Short Message Service (SMS): how text messaging helped to change the world. Ericsson.com. Retrieved October 16, 2014, from http://www.ericsson.com/news/121130-twenty-years-of-short-message-service_244159017_c
Erikson, C. (2012, September 21). A Brief History of Text Messaging. Mashable. Retrieved October 14, 2014, from http://mashable.com/2012/09/21/text-messaging-history/
Gayomali, C. (2012, December 3). The text message turns 20: A brief history of SMS. The Week. Retrieved October 14, 2014, from http://theweek.com/article/index/237240/the-text-message-turns-20-a-brief-history-of-sms
Illinois State University, I. o. (n.d.). SMS overview. Webcontent/Reading. Retrieved October 15, 2014, from http://www.itk.ilstu.edu/staff/drathke/277web/WebContent/reading/SMSoverview2.pdf
Youcom. (2011, December 28). Start creating, sharing & exploring great visuals today!. Text Messaging a Timeline of how 160 Characters Changed the Way We Communicate. Retrieved October 16, 2014, from http://visual.ly/text-messaging-a-timeline-of-how-160-characters-changed-the-way-we-communicate
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