DualSMS - SMS Gateway for the Whole World.
An SMS gateway allows a computer to send or receive Short Message Service (SMS) transmissions to or from a telecommunications network. Most messages are eventually routed into the mobile phone networks.. The SMS Gateway translates the message sent, and makes it compatible for delivery over the network to be able to reach the recipient.
In the old days, SMS Gateways were physical pieces of hardware with SIM cards and radios in them. Each was individually connected to mobile phone networks to send text messages.
Nowadays, most SMS Gateways route SMS text messages to the telco networks via an SMPP interface that networks expose, either directly or via an aggregator that sells messages to multiple networks.
SMPP stands for Short Message Peer-to-Peer and is a protocol for exchanging SMS messages between Short Message Service Centers (SMSCs) and/or External Short Messaging Entities (ESMEs).
Computers can interact with SMS Gateways in multiple ways:
* Through a REST API, where software developers send and receive SMS text messages over HTTP to the REST API.
*Using a Web Page or Software, where customers upload their messages and list of phone numbers
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