Protocols BroadNet answer
What is an SMSC?
Last reviewed 1 min readReviewed by BroadNet engineering
Quick answer
An SMSC (Short Message Service Center) is the core infrastructure component of a mobile network that stores, forwards, and delivers SMS messages between mobile devices and external applications. Every SMS — A2P, P2P, MO, MT — passes through an SMSC.
Plain-language definitionVendor-neutralReviewed May 26, 2026
- Your applicationSends over the REST API or SMPP
- BroadNet platformValidates, routes and bills each message
- Operator SMSCDirect operator connection
- Subscriber handsetThe message is delivered
The delivery receipt (DLR) travels back along the same path to your webhook
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$ curl -X POST https://api.broadnet.me/sms/sendSms
Response SLA
Test-access requestsReply within 1 business day
Production24 / 7 · < 15 min
Operator NOC24 / 7 · pager