The Short Message Service (SMS) allows the exchange of short
messages between a mobile station and the wireless system, and
between the wireless system and an external device capable of
transmitting and optionally receiving short messages. The external
device may be a voice telephone, a data terminal or a short message
The Short Message Service consists of message entry features,
administration features, and message transmission capabilities.
These features are distributed between a wireless system and the
SMS message center (MC) that together make up the SMS system. The
message center may be either separate from or physically integrated
into the wireless system.
Short message entry features are provided through interfaces to
the message center and the mobile station. Senders use these
interfaces to enter short messages, intended destination addresses,
and various delivery options.
Message center interfaces may include features such as audio
response prompts and DTMF reception for dial-in access from voice
telephones, as well as appropriate menus and message entry
protocols for dial-in or dedicated data terminal access. Mobile
station interfaces may include keyboard and display features to
support message entry. Additionally, a wireless voice service
subscriber can use normal voice or data features of the mobile
station to call an SMS system to enter a message.
An SMS Teleservice can provide the option of specifying priority
level, future delivery time, message expiration interval, or one or
more of a series of short, pre-defined messages.
If supported by the Teleservice, the sender can request
acknowledgment that the message was received by the mobile station.
An SMS recipient, after receiving a short message, can manually
acknowledge the message. Optionally, the recipient can specify one
of a number of pre-defined messages to be returned with the
acknowledgment to the sender.
SMS administration features include message storage, profile
editing, verification of receipt, and status inquiry capabilities.
SMS administration is not within the scope of this
The SMS transmission capabilities provide for the transmission
of short messages to or from an intended mobile station, and the
return of acknowledgments and error messages. These messages and
acknowledgments are transmitted to or from the mobile station
whether it is idle or engaged in a voice or data call.
The wireless service provider may offer SMS transmission to its
wireless voice and data customers only, or may provide an SMS-only
service without additional voice or data transmission
This specification also provides for the broadcast of messages.
All available mobile stations on a Paging Channel or Primary
Broadcast Control Channel can receive a broadcast message. A
broadcast message is not acknowledged by the mobile station.
Broadcast Messaging Services may be made available to mobile
stations on a Paging Channel or
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