One such solution is the SMPP Gateway—a technology that streamlines bulk SMS delivery for enterprises, developers, and service providers. What Is an SMPP Gateway? An SMPP Gateway (Short Message Peer-to-Peer Gateway) is a communication protocol that allows the exchange of SMS messages between SMS centers (SMSC) and external entities such as applications, websites, or messaging serv... https://www.itsolution4india.com/bulk-sms/voice-call.php