The nRF93M1 supports SMS in PDU mode for mobile-originated and mobile-terminated short messages, with support for delivery-status reporting.
Operational mode
The public AT command set exposes PDU mode only. Encoding follows 3GPP TS 23.040 and TS 23.041.
SMS AT commands
| Command | Purpose |
|---|---|
+CMGS | Send an SMS (mobile-originated). |
+CMT | Unsolicited result code for an incoming SMS delivered directly to the TE. |
+CNMA | New-message acknowledgement to the network. |
+CDS / +CDSI | Delivery-status URC: direct (+CDS) or stored-in-ME (+CDSI). |
+CMTI | Unsolicited result code for an SMS stored in the module. |
+CNMI | Subscribe to SMS URCs and select delivery routing. |
+CSCA | Configure the SMS service-centre address. |
Constraints
- Only one AT client at a time may be registered as the SMS client. Any new SMS registration requires the previous registration to be released.
- Cell broadcast (
+CSCB) is not supported.