How SMS Service works?

SMS (Short Message Service) utilizes the existing infrastructure for voice calls, operating on the signaling channels of mobile networks. Here is a simplified overview of how an SMS message is delivered:

1. Message Initiation: An application creates a text message addressed to a recipient's phone number and sends the request to Furay.

2. Message Processing: Furay receives and processes the message request.

3. Routing to the SMSC: Furay sends the message to the appropriate Short Message Service Center (SMSC). This may be done directly or through an intermediary SMS route. At this stage, the message leaves Furay's boundary.

4. Message Delivery to Network: The SMSC uses a series of signaling messages to forward the message to the recipient's mobile network.

5. Message Storage: The recipient's home SMSC receives the message and temporarily stores it until the recipient's device is available.

6. Device Notification: When the recipient's device is reachable, the SMSC sends a notification that a new message is waiting.

7. Message Retrieval: The recipient's mobile device connects to the SMSC to retrieve the stored message.

8. Message Display: The message is delivered to the recipient's mobile device and displayed on the screen.

9. Delivery Confirmation (Optional): The recipient's device may send a Delivery Receipt (DLR) back to the sender's SMSC, confirming successful reception. This DLR is then relayed back through Furay to the original application.