SMS 101 – Basics of SMS Technology

May 18, 2014

1026_img121. What is SMS ?

SMS stands for short message service. It is also called texting in some countries like US. Simply put, it is a method of communication that sends text between cell phones, or from a PC or Handheld devices to a cell phone. The “short” part refers to the maximum size of the text messages: 160 characters (letters, numbers
or symbols in the Latin alphabet). For other alphabets or Unicode texts, such as Chinese, the maximum SMS size is 70 characters.

 2. How does it work actually ?

Your handset uses SMPP protocol to communicate with Telephone operators gateways.

SMPP stands for Short Message Peer to Peer Protocol

SMPP is used to send and receive messages from and to GSM, UMTS, iDEN,CDMA and TDMA cell phones. The protocol is a level-7 TCP/IP protocol, which allows fast deliver of SMS messages.

3. What is MMS ?

MMS  stands for multimedia messaging service, takes (short message service) text messaging a step further by allowing for longer lengths beyond the traditional, 160-character SMS limit. MMS is  received by a cell phone and  then require the mobile Web to access it. It requires data connection. Most of the cases MMS supports only messaging between 2 connections of same operator.

4. How can SMS be sent from PC or website ?

SMS provider companies like Screen-Magic directly buys SMSC connections from Telecom operators and submits messages to Telecom operators. Telecom operators then send messages to end devices. Same works in reverse direction for Inbound numbers or VMNs (virtual Mobile numbers)

5. What is TCPA/DND ?

As SMS is popular direct marketing medium, Anyone can send sms to mobile numbers. In the past, SMS has been misused by marketers and consumers were spammed with unsolicited messages. Telecom regulatory authorities of most of the countries has brought in laws to control the unsolicited message sending. TCPA or DND are basic laws which prevents misuse of SMS for unsolicited usage.


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