Garmin NavTalk Command Reference page 2

1.1 AT Commands According to GSM 07.05 for SMS
The GSM 07.05 commands are for performing SMS and CBS related operations for both Text and PDU
modes.
1.1.1 Overview
Command
AT+CMGD
AT+CMGF
AT+CMGL
AT+CMGR
AT+CMGS
AT+CMGW
AT+CMSS
AT+CMGC
AT+CNMI
AT+CPMS
AT+CRES
AT+CSAS
AT+CSCA
AT+CSCB
AT+CSDH
AT+CSMP
AT+CSMS
Description
DELETE SMS MESSAGE
SELECT SMS MESSAGE FORMAT
LIST SMS MESSAGES FROM PREFERRED STORE
READ SMS MESSAGE
SEND SMS MESSAGE
WRITE SMS MESSAGE TO MEMORY
SEND SMS MESSAGE FROM STORAGE
SEND SMS COMMAND
NEW SMS MESSAGE INDICATIONS
PREFERRED SMS MESSAGE STORAGE
RESTORE SMS SETTINGS
SAVE SMS SETTINGS
SMS SERVICE CENTER ADDRESS
SELECT CELL BROADCAST SMS MESSAGES
SHOW SMS TEXT MODE PARAMETERS
SET SMS TEXT MODE PARAMETERS
SELECT MESSAGE SERVICE