Group Ring Back Tone Routing in Mobile Switchboard Transfer
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Solution Overview
Problem
Current ring back tone services based on mobile intelligent networks cannot play a group ring back tone subscribed to by a group customer when a calling party dials a group mobile switchboard number to transfer to an extension subscriber, as they lack the functionality to determine and play the corresponding ring back tone when the called number is used as a relay number for transfer.
Innovation Solution
A method and system that involves a home service control point obtaining the identification of the extension subscriber called by the calling party, routing this information to a ring back tone intelligent peripheral, and connecting the call to the visited mobile switching center of the called extension subscriber, while playing a group ring back tone subscribed to by the group customer, and blocking the normal ring back tone played by the visited mobile switching center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a group mobile switchboard number is used as a relay number for transfer to an extension subscriber, then the call can be routed to the extension, but the system cannot play the group ring back tone subscribed to by the group customer
Solution Approach 1:
The system performs preliminary actions by obtaining the identification of the extension subscriber before completing the call transfer, and determines whether to play the group ring back tone in advance. The service control point retrieves the extension subscriber's identification from the intelligent peripheral, checks subscription information, and prepares the ring back tone playback before the call is fully transferred, ensuring the service is available throughout the transfer process.
2Adaptability or versatility
If the system plays the group ring back tone during call transfer, then the group customer's subscription is honored, but the normal ring back tone played by the visited mobile switching center must be blocked
Solution Approach 1:
The service control point acts as an intermediary between the intelligent peripheral and the visited mobile switching center. It receives the identification of the extension subscriber from the intelligent peripheral, determines the appropriate ring back tone based on subscription information, and controls the playback by sending instructions to block the normal ring back tone from the visited switching center while playing the customized group ring back tone.
3Measurement precision
If the system obtains and processes the extension subscriber identification through the intelligent peripheral and service control point, then the correct ring back tone can be selected, but the signaling processing time is increased
Solution Approach 1:
The system performs preliminary actions by obtaining the identification of the extension subscriber before completing the call transfer, and determines whether to play the group ring back tone in advance. The service control point retrieves the extension subscriber's identification from the intelligent peripheral, checks subscription information, and prepares the ring back tone playback before the call is fully transferred, ensuring the service is available throughout the transfer process.
Data Source
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AI summary
This invention discloses a method and system of implementing a ring back tone based on a group mobile switchboard service. The method includes: a home service control point of the group mobile switchboard obtaining an identification of an extension subscriber which a calling party calls, and sending routing information of a ring back tone intelligent peripheral and the identification of the called extension subscriber respectively to a gateway mobile switching center/mobile switching center which triggers the intelligent service; the gateway mobile switching center/mobile switching center which triggers the intelligent service routing the identification of the called extension subscriber to the ring back tone intelligent peripheral according to the received routing information of the ring back tone intelligent peripheral; the ring back tone intelligent peripheral connecting the call to a visited mobile switching center of the called extension subscriber, and playing a group ring back tone subscribed to by the group customer for the calling party. This invention can play a group ring back tone subscribed to by the group customer for a subscriber during the transfer from a switchboard to an extension.