With reference to the mobile telephony the USSD technology is increasingly being adopted in recent t...........

General Science (Easy) Physics

With reference to the mobile telephony, the USSD technology is increasingly being adopted in recent times for various services. How the USSD is different from SMS ?

1. While USSD maintains a continuous session so that users receive immediate response, SMS service can’t involve a continuous session

2. While per message length in USSD is 182 alphanumeric characters, it 160 alphanumeric characters for SMS

Choose the correct option from the codes given below:

Only 1

Only 2

Both 1 & 2

Neither 1 nor 2

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Explanation:

Unstructured Supplementary Service Data is a type of communications protocol which is used by GSM cellular telephones to set up communication with the mobile network operator’s computers. It maintains a continuous session which enables the users receive immediate response. Short message service uses standardized communication protocols which enable user to exchange short text messages through cell phones. It is of a single instance type and can’t involve a continuous session. While per message length (7 bit character) in USSD is 182 alphanumeric characters , it is 160 alphanumeric characters for SMS.