Missing-Call Short Message Notification Device
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Solution Overview
Problem
Existing communication systems fail to efficiently notify users of missed calls, especially when users are inaccessible, due to high costs and complexity of upgrading HLRs, and the need for users to pay for voice mailbox access and leave messages.
Innovation Solution
A missing-call short message notification device and method that includes a main control module, relay signaling processing module, short message constructing module, and short message sending module to construct and send a missing-call short message directly to users when a call is not put through, using a dedicated notification number and minimizing network alterations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HLRs are upgraded to construct and send missing-call short messages, then notification service capability is improved, but network cost and complexity increase significantly
Solution Approach 1:
A dedicated Missing Call Notification Device (MCND) is introduced as an intermediary component between the switching device and the called user. The MCND receives call information from the switching device and constructs/sends short messages to notify called users of missed calls, thereby eliminating the need to upgrade existing HLRs and reducing network complexity while maintaining notification service capability
2Reliability
If voice mailbox service is used to notify missed calls, then notification capability is provided, but user cost and operation complexity increase
Solution Approach 1:
The system automatically notifies called users of missed calls by sending short messages containing calling party information directly to their mobile phones. This self-service mechanism eliminates the need for users to manually access voice mailboxes, leave messages, or incur additional charges, thereby simplifying user operation while maintaining notification capability
3Loss of energy
If call information is not provided to inaccessible users, then network resource consumption is reduced, but information completeness deteriorates
Solution Approach 1:
The system performs preliminary action by sending notification short messages to called users before they attempt to access voice mail or before the call information is lost. The MCND constructs and sends notifications containing complete calling party information automatically when calls are missed, ensuring information completeness is delivered in advance while consuming minimal network resources compared to full voice mail access
Data Source
AI summary
A missing-call short message notification device includes: a main control module for controlling and scheduling other modules; a relay signaling processing module for receiving information sent by the switching device and sending information to the switching device; a short message constructing module for constructing a missing-call short message; a short message sending module for sending the constructed message to the called user. A method for realizing short message notification service for missing calls includes: a called user sets a call forward number to be a missing-call short message notification number; a switching device detects that a call from a calling user to a called user is not put through, and sends information of the calling user to an MCND based on the call forward number; the MCND constructs a missing-call short message based on the information of the calling user and sends the constructed message to the called user.