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System and Method of Altering Caller ID Information for the Purposes of Sending a Short Alpha Numeric Message

IP.com Disclosure Number: IPCOM000130512D
Publication Date: 2005-Oct-25
Document File: 1 page(s) / 26K

Publishing Venue

The IP.com Prior Art Database

Abstract

Short messaging services (SMS) costs money to send each message on a mobile device. It would be beneficial to create a new, less expensive method of sending alphanumeric messages between two devices. Known existing services allow users to change the caller ID information of a call they're sending. While the legality and desirability of this practice is questionable, the existence of the technology can enable a new form of messaging between two phones enabled to exploit the existence of the fact. Assuming that caller ID is limited to a mixture of 20 numbers/letters, caller A can change their "phone number" to "meet at 4 - Mike" and call caller B's phone. Before making the call, the custom phone number is prepended with a special character sequence known by the phone client of caller B's phone to identify that the incoming call is not a phone, call but a message. Caller B's phone, on receiving the call will note the control characters in the caller ID information, and instead of ringing the phone, will reject the call, absorb the caller ID information, and present it as a message to Caller B. Much like SMS, caller B's phone can send back a delivery confirmation on successful receipt of the message and messages can be replied to. While this system is not an ideal use of telephony infrastructure, going through the pain of creating a circuit call just to deliver a short message, it would be a free messaging service. An extension of this idea would be the transmission of simple information services. I could know the score in the hockey game all the time, whenever a team scores, the hockey service that I have subscribed to sends me a customized call that gets absorbed into he services app and updates the score for me in real time. Alternatively, I could call a published weather service phone number with my true phone number and a city name instead of my last name. The service would then reply with an abbreviated version of today's weather forecast. Note that this service, like SMS and unlike GPRS messages will allow messages to be received when the user is on the phone.

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CALLER ID MESSAGING

System and Method of Altering Caller ID Information for the Purposes of Sending a Short Alpha Numeric Message

Disclosed Anonymously

Short messaging services (SMS) costs money to send each message on a mobile device. It would be beneficial to create a new, less expensive method of sending alphanumeric messages between two devices.

Known existing services allow users to change the caller ID information of a call they're sending.  While the legality and desirability of this practice is questionable, the existence of the technology can enable a new form of messaging between two phones enabled to exploit the existence of the fact. 

Assuming that caller ID is limited to a mixture of 20 numbers/letters, caller A can change their "phone number" to "meet at 4 - Mike" and call caller B's phone.  Before making the call, the custom phone number is prepended with a special character sequence known by the phone client of caller B's phone to identify that the incoming call is not a phone, call but a message.

Caller B's phone, on receiving the call will note the control characters in the caller ID information, and instead of ringing the phone, will reject the call, absorb the caller ID information, and present it as a message to Caller B.  Much like SMS, caller B's phone can send back a delivery confirmation on successful receipt of the message and messages can be replied to.

While this system is not an ideal use of telephony infrastructure, going through the pain of...