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Voice SMS allows a subscriber to send the voice message to the other subscriber without talking to the recipient. The sender does it by dialing the recipient number in a pre-defined fashion/pre-defined by the operator. The network then routes the call to the IVR front end of the Voice SMS system. The sender then leaves a message in the Voice SMS system and hangs up the phone. The recipient is then sent an alert from the Voice SMS system about the sender’s message. The receiver of the message can then listen to the sender’s message and can also reply to the message by pressing a pre-designated numeric key and start speaking and end up by hanging up the phone. The original sender will receive an alert regarding the recipient reply and so on.
The solution shall have the features to provide:
· Message listen notification - Notification to the original sender that the intended recipient has listen to the Voice SMS end.
· Group Messaging - It should be possible to send /forward a Voice SMS to a number of subscribers.
· Message Scheduling - It should be possible to schedule the delivery of a Voice SMS at a particular time. The maximum minimum time frame for scheduling be indicated in the proposal.
· Configurable Message Storage interval - It should be possible to store a Voice SMS in the system for a BSNL configurable time period to enable a recipient retrieve/ hear the VSMS (The flexibility of the system should be highlighted in the proposal).
· Single Message Length - The typical single message length is desired as 30 seconds, however, it should be configurable by BSNL (The capability of the solution be clearly indicated in respect of this feature as minimum and maximum limit)
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