On-Air 2100 SMS user guide ~ Edition 3 ~ 29th July ’02 ~ 4641

Timer

To change the welcome screen

You can use your handset to set a reminder alarm which will activate after a period of time of your choice.

Press the DOWN button to select Ringing and beeps.

Please note that once you have changed the welcome screen you cannot return to the default screen but you can keep changing the screen yourself.

Press the UP or DOWN button to

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Press the OK button to confirm.

Press the UP button to select Timer.

Press the OK button to confirm.

Press OK again to select Set.

Using 4 digits, enter the time to elapse before your reminder call activates.

Press the OK button to save.

Press the DOWN button to select Status.

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display Set.

Press the OK button to confirm.

Press the UP or DOWN button to display Welcome screen.

Use the C button to delete the existing welcome screen.

Use the keypad letters to enter a new welcome screen of your choice.

Press the OK button to confirm.

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Press the OK button to confirm.

Press the button until a appears in the box next to On.

Press the OK button to confirm.

To switch off the timer press the button until the disappears from the box next to On.

Press the OK button to confirm.

Program buttons

You can change the short cut buttons if you wish to.

Press the UP or DOWN button to display Set.

When the timer is set is displayed.

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Press the OK button to confirm.

The display will show Program keys.

Press the OK button and then refer to the menu structure on page 4 to help you change the buttons to your personal preference.

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BT SMS manual Program buttons

SMS specifications

BT SMS, or British Telecommunications Short Message Service, is a messaging service that allows users to send and receive text messages via mobile networks. This service has become increasingly popular due to its ease of use, reliability, and the ability to communicate in real time. BT SMS integrates various technologies, making it a crucial tool for both personal and professional communication.

One of the main features of BT SMS is its reliability. The service operates on established mobile network infrastructure, ensuring messages are transmitted quickly and efficiently. Additionally, SMS is designed to deliver messages even when mobile data services are unavailable, making it an essential mode of communication in areas with limited connectivity.

Another significant characteristic of BT SMS is its wide compatibility. It can be used across various mobile devices, regardless of the operating system. This universality is further enhanced by the ability to communicate with different network providers, allowing users to send messages to anyone, anywhere, as long as they have a mobile phone.

BT SMS supports various multimedia messaging capabilities, such as sending images, videos, and emoji through MMS (Multimedia Messaging Service). This enriches the text communication experience, allowing users to convey emotions and visual information that plain text may not adequately express.

Security features are also integral to BT SMS. Messages are often encrypted during transmission, protecting users' privacy and ensuring that their conversations remain confidential. Additionally, users have the option to enable message delivery reports, which provide confirmation when a message is successfully delivered.

The technology behind BT SMS is based on a store-and-forward mechanism. When a message is sent, it is first stored in the network's SMS Center until it can be delivered to the recipient's device. This allows for smooth delivery even if the recipient's phone is switched off or out of coverage at the time the message is sent.

In conclusion, BT SMS remains an essential communication tool with its reliability, compatibility, multimedia capabilities, security features, and robust technology. Whether for personal interactions or professional engagements, BT SMS continues to evolve, catering to the needs of users in a fast-paced, digital world. Its simplicity and effectiveness ensure that it remains relevant in an era dominated by various messaging applications.