SMPP

SMPP binds, windows, and session limits for high volume — not REST API keys you rotate.

3 guides in this topic

SMPP Bind Windows and Session Limits
Learn how to quote high-volume SMPP binds, configure window sizes, enforce session limits, and handle prepaid balance holds for enterprise messaging workloads on IOSOR.
SMPP Binds vs REST API Keys
Compare SMPP sessions and REST API keys on IOSOR. Learn sliding window mechanics, key rotation workflows, and credential management under Developers.
SMPP enquire_link Fail Is Not Delivered Traffic
Learn how dead SMPP binds and unanswered enquire_link heartbeats are handled in IOSOR to prevent false DLRs and protect balance ledgers from erroneous debits.