Quick definition: SMSC stands for short message service center. It’s the part of a wireless network that facilitates short message service (SMS) communications between devices on the network. Text messaging and many Internet of Things applications depend on SMSCs to relay communications from one device to another.
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What Is A2P SMS? Application-to-Person Messaging Explained
Password reset requests, two-step authentication, and appointment reminders are all common examples of Application-to-Peer messaging. Enterprise businesses also use A2P SMS to turn text messaging into an outbound marketing channel.
SMPP: Short Message Peer-to-Peer Protocol
SMPP is essentially the language cellular networks use to relay text messages. It governs how External Short Message Entities (ESME) such as business texting apps and cellular IoT devices exchange Short Message Services (SMS) with a mobile device.
What Is USSD? Unstructured Supplementary Service Data
USSD allows you to send small data packages without a data connection and without incurring SMS costs. It’s typically used for sending short requests and commands, and these messages can only contain a maximum of 182 characters (16 bits of data). USSD doesn’t support Multimedia Messages (MMS) like audio, video, or images.