Quick definition: An MSISDN is the phone number you use to connect with a specific mobile user on a network. Any time you call or text someone, you’re using the MSISDN to reach them, and they use your MSISDN to identify you.
Get in touch with our IoT experts
Discover how emnify can help you grow your business and talk to one of our IoT consultants today!
What Is an International Mobile Subscriber Identity (IMSI)?
IMSI numbers are usually 15 digits, and they have three distinct parts:
What Is Multi-IMSI and How Does It Work?
An IMSI is a key component of a Subscriber Identity Module (SIM) profile, which is stored on a SIM card. Each one allows a device to connect to a limited number of networks. When a SIM card holds multiple IMSIs, it enables subscribers to switch carriers as needed and connect to significantly more networks.
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.