Description

Tones and signals

The following different tones and signals are sent from the telephone system to your phone.

Tone characteristics

The tones shown in this section are the most used tones worldwide. Many markets use a differing tone for one or more situations.

Dial tone

Special dial tone

Ring tone or queue tone every 4 seconds

Busy tone

Congestion tone

Number unobtainable tone

Call waiting tone

 

Intrusion tone

 

Conference tone

every 15 seconds (to all parties)

Verification tone

 

Warning tone, expensive route

 

Dialog 4187 Plus

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Ericsson 4187 Plus manual Tones and signals, Tone characteristics

4187 Plus specifications

The Ericsson 4187 Plus is a state-of-the-art telecommunications receiver designed for optimal performance in challenging environments. This advanced device caters to various applications, primarily in field operations, providing reliable communication capabilities in remote or demanding locations.

One of the standout features of the Ericsson 4187 Plus is its robust design. Built to withstand extreme weather conditions, it operates efficiently in a wide temperature range. This durability ensures that users can rely on the device for prolonged periods in the field without concerns about equipment failure due to environmental factors.

The receiver supports multiple frequency bands, enhancing its versatility for different communication requirements. This feature makes the Ericsson 4187 Plus suitable for a range of applications, including disaster recovery, military operations, and emergency response situations. With its ability to seamlessly switch between different networks, the device ensures consistent connectivity even when moving between coverage areas.

In terms of technology, the Ericsson 4187 Plus incorporates advanced digital signal processing capabilities. These capabilities provide clearer audio quality and reduce background noise, which is crucial in dynamic environments where clear communication is vital. The receiver is also compatible with various communication protocols, allowing it to connect effortlessly with existing telecommunications infrastructure.

Another significant characteristic of the Ericsson 4187 Plus is its user-friendly interface. The device features intuitive controls and a clear display, enabling users to navigate its functionalities with ease. This design consideration is particularly important for field personnel who may need to operate the device under pressure.

Battery life is another critical aspect of the Ericsson 4187 Plus. Designed for extended use, the device boasts a long-lasting battery that can endure lengthy missions without frequent recharging. Additionally, it offers energy-efficient modes that optimize power consumption based on usage patterns.

Overall, the Ericsson 4187 Plus stands out as a leading telecommunications solution, combining durability, advanced technology, and user-friendliness. Its ability to deliver reliable communication in various scenarios makes it an invaluable tool for professionals operating in remote or challenging conditions.