簡訊
The "Short Message Service—Point to Point (SMS-PP)"—was originally defined in GSM recommendation 03.40, which is now maintained in 3GPP as TS 23.040. GSM 03.41 (now 3GPP TS 23.041) defines the "Short Message Service—Cell Broadcast (SMS-CB)", which allows messages (advertising, public information, etc.) to be broadcast to all mobile users in a specified geographical area.