will lit as long as the handset is on the base. Charge the handset for a period of 24 hours before using the handset for the first time. To extend the battery life time, discharge the batteries completely from time to time. As soon as the handset emits a warning tone or when the battery icon 
is empty, you have to put it back on the base unit for charging.
Full battery 
Empty battery
. You will hear the dial tone. 
to dial out the number you last called. 
when you want to terminate the call.
button. 
. The number will be dialled automatically. 
when you want to terminate the call.
. The number you last called appears on the display. If you would like to dial one of the last 3 numbers dialled, press the Redial key 
a few times until the desired number appears on the display. 
. 
to hang up.
to answer the incoming call.
to activate the hands free function. Press the same button 
to deactivate the hands free function.
3400 specifications
The Topcom 3400 is a sophisticated communication device designed with advanced features and superior technology, making it a popular choice among users seeking reliability and quality. This model seamlessly integrates functionality, portability, and user-friendly features that cater to both casual users and professionals alike.One of the standout characteristics of the Topcom 3400 is its clear and crisp audio quality, which ensures that every conversation is free of distortion and background noise. This clarity is achieved through its advanced noise-cancellation technology, which works to filter out ambient sounds, giving users an uninterrupted communication experience. Whether in a busy office or a crowded outdoor environment, the Topcom 3400 delivers consistent performance.
The device also boasts a robust battery life, allowing for extended usage without the need for frequent recharges. This feature is particularly beneficial for users who rely on their communication device throughout the day, ensuring that they remain connected during crucial moments. The Topcom 3400’s battery management system optimizes power consumption, providing users with a reliable performance.
Another key feature of the Topcom 3400 is its versatile connectivity options. It supports multiple communication protocols, making it compatible with various devices and networks. Users can enjoy seamless integration with smartphones, tablets, and other communication tools. Additionally, the device often includes Bluetooth capabilities, enabling hands-free operation and further enhancing convenience.
The design of the Topcom 3400 is both ergonomic and aesthetically pleasing. Its lightweight and compact form factor make it easy to carry, while the intuitive interface ensures that users can navigate through features effortlessly. The device is also built to withstand regular wear and tear, boasting durability that appeals to users in demanding environments.
In terms of additional technologies, the Topcom 3400 often features customizable settings and programmable functions, allowing users to tailor the device to their specific communication needs. This adaptability makes it suitable for a wide range of applications, from business to casual use.
Overall, the Topcom 3400 stands out in the crowded communication device market due to its blend of innovative technologies, user-friendly features, and robust performance characteristics. Whether for daily personal use or professional communication, the Topcom 3400 is a reliable choice that meets the demands of modern users. Its combination of clarity, battery longevity, and connectivity options makes it a top contender among communication devices.