Caller ID Server for PSTN Call Forwarding
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Solution Overview
Problem
Existing systems fail to provide a satisfactory solution for professionals to make calls with a desired caller ID over a public switched telephone network (PSTN), especially when calls are forwarded from a work or office phone to a personal cell phone, leading to confusion and potential customer dissatisfaction, and VOIP calls offer diminished quality compared to PSTN calls.
Innovation Solution
A method and system that allow a server to receive an audio call from a device with a first caller ID and additional data via a different channel, enabling the server to connect the device to a destination with a predetermined caller ID that differs from the original, and inform the recipient about the call's origin, including the specific number it is being forwarded from.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If calls are forwarded from a work or office phone to a personal cell phone, then the caller can be reached outside office hours, but the cell phone displays only the forwarded number's caller ID causing confusion and customer dissatisfaction
Solution Approach 1:
The patent introduces a server as an intermediary between the PSTN network and the mobile device. The server receives the audio call with original caller ID through PSTN, extracts caller ID information, and transmits it separately through a data channel to the mobile device. This intermediary approach allows both the audio call and caller ID information to reach the destination without conflict.
Solution Approach 2:
The patent separates the transmission of audio data and caller ID information into different dimensions or channels. The audio call travels through the PSTN voice channel while caller ID information is transmitted through a separate data channel (such as SMS or data messaging). This dimensional separation allows both types of information to coexist and be delivered simultaneously without interference.
2Loss of information
If VOIP is used to provide forwarded calls with complete caller ID information, then caller identification is improved, but call quality becomes diminished and choppy
Solution Approach 1:
The patent segments the communication into two separate components: audio transmission through PSTN and data transmission through a separate channel. By dividing the communication task, the system can maintain high-quality audio through the reliable PSTN network while simultaneously transmitting caller ID information through the data channel, avoiding the quality issues associated with VOIP.
Solution Approach 2:
The server acts as an intermediary that handles the complex task of separating audio and data streams. It receives the incoming call with complete caller ID information via PSTN, processes the information, and delivers both the audio stream and caller ID data through appropriate channels, ensuring both quality and information completeness.
3Adaptability or versatility
If a mobile device places a call with its personal number, then the call can be made from anywhere, but the recipient sees the personal number due to caller ID leading to lost opportunities
Solution Approach 1:
The server serves as an intermediary that enables the mobile device to place calls while masking the personal number. The device calls the server using its personal number, the server receives the call with the personal caller ID, then places a new call to the destination with the desired professional caller ID, and connects the two calls. This intermediary approach preserves professional identity while maintaining mobile flexibility.
Solution Approach 2:
The system creates a copy of the call pathway through the server. The original call from the mobile device is copied and rerouted through the server, which generates a new call leg with the desired caller ID. This copying mechanism allows the mobile device to maintain its personal number while presenting a professional caller ID to the recipient.
Data Source
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AI summary
A system and method of providing caller identification (ID) over a public switched telephone network (PSTN). For outbound calls, the system and method enable a caller to provide a caller ID that differs from the native caller ID of their mobile phone. The system and method enable multiple phones tied to a single account to display the same caller ID for outbound calls. For forwarded inbound calls, such as calls being forwarded from an office, the system and method inform the recipient of the identification of the call as well as that the call is being forwarded. The system and method enable the recipient to have calls forwarded from more than one number and identify the identity of the caller as well as the specific number the call is being forwarded from.