CM Tooltip Glossary

2-Way SMS Messaging

2-Way SMS Messaging is a system that incorporates both outbound (Mobile Terminated or MT) and inbound (Mobile Originated or MO) SMS into one fully-featured service. By using a dedicated number, a 2-Way SMS user can send and receive SMS through a web messaging platform by using complete solutions or APIs. It is enabled using short codes or virtual long numbers (also known as virtual mobile numbers). The main difference between the two is the length of the number; while virtual mobile numbers look like a standard phone number, short codes have between 3 and 6 digits, making them easier to remember. Short codes can only be used on a national level though and countries around the world have different regulations and requirements concerning them.