The Short Message Service or SMS is the most commonly used means of communication now. This feature is found in cellular phones and other hand-held devices. The basic premise is composing a message using keypad and sending the message to the number of the recipient. This text messaging service has 2.4 billion active users sending and receiving messages on their mobile handsets.
The SMS for modern handsets was part of the standards of GSM series in 1985 for sending messages of up to 160 characters involving spaces from and to GSM mobile phones. Here is a more technical in-depth about the SMS technology.
The Short Message Service Point to Point or SMS-PP is stated in GSM recommendation 03.40. However, the GSM 03.41 states the SMS Cell Broadcast or SMS-CB. This permits messages from public information and advertising to be publicized to all mobile users in a particular geographical area.
However, the messages are sent to a Short Message Service Center or SMSC. It gives a 'save and send' mechanism. It enables messages to be propelled to their receivers. The SMSC sets the message for future sending when it is not received.
The SMSC also features attempting to send the message only once. The Mobile Terminated or MT for messages has been delivered to a mobile phone while the Mobile Originating or MO for those that are delivered from the mobile phone where operations is monitored.
The sending of message is processed great, therefore a message will actually be sent to its receiver. Furthermore, the delay or totally disappearance of a message is not uncommon specifically when transmitting between networks.
The short messages can be encoded through a number of alphabets. These are the default GSM 7-alphabet bit, the 16-bit UTF-16 or UCS-2 alphabet, and the 8-bit data alphabet. The older mobile phone units only have a capacity of 160 characters per text message. But newer models have already increased significantly this capacity by at least 200%.
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