Chapter 1: Product Features
June 30, 2008 AT Commands Reference Manual 1 -15
Short Message Service (SMS)
Overview
The SMS feature provides means for SMS messages handling and the reporting of SMS reception
events.
G24 SMS implementation is based on the GSM 07.05 specification.

Features

The SMS, as defined within the GSM 900/1800/1900 digital mobile phone standard:
A single short message can be up to 160 characters of ASCII text in length (7-bit coded).
Message text can comprise words, numbers or an alphanumeric combination.
Short messages can be written and displayed in various coding schemes, including ASCII
and UCS2.
Reception of an incoming message can invoke an indication to the terminal. This feature is
configurable using the command AT+CNMI. Short messages received during data calls are
not indicated.
Short messages can be sent and received simultaneously with GSM voice, data and fax calls.
Cell broadcast messages can also be selected and received on the G24. The G24 enables
registration to specific broadcast channels.