RADIO CALLS

DTMF

DTMF means Dual Tone Multi Frequency and is used when the radio is required to operate in a radio system with an interface to telephone systems.

There are two methods of accessing DTMF Live Dial Mode:

Automatic/Manual

To do this, your radio must send a telephone interconnect to a station that connects you to a phone line. After you have finished your call, the radio sends a clear down call (if programmed) to shutdown the connection to the phone line.

Sending the Telephone Interconnect Call

Your radio can be programmed to send the interconnect call in one of the following ways:

•automatically - when a call button

(Call 1 - 4 or PTT) has been programmed with the interconnect call, or a contact list entry has been programmed for DTMF access.

•manually - when you dial the code using the keypad

If in doubt, please contact your dealer or network manager for further information.

To initiate a DTMF call with Automatic Telephone Interconnect Call

1Press dedicated Call Button (Call 1-4 or PTT), you will hear a tone sequence.

Display icon lit:

D

2Wait for call to be set up when you will hear a dial tone.

Display shows:

Enter Digits

3Enter desired phone number, taking care not to press the PTT.

Note: Each DTMF digit is transmitted instantly.

Display shows

8116

entered digits:

 

4Once the radio has connected to the called number, you can begin the conversation. Even though this is a phone call, your conversation mimics a radio call, that means that both parties speak in turn, i.e. press the PTT to talk, release to listen.

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Motorola GM380 manual Radio Calls Dtmf, Automatic/Manual
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GM380 specifications

The Motorola GM380 is a prominent model in the realm of two-way radios, offering robust performance and user-friendly features tailored for commercial and industrial use. Known for its reliability and durability, the GM380 has been widely adopted in various sectors, including transportation, public safety, and manufacturing.

One of the highlights of the Motorola GM380 is its advanced digital signal processing technology. This feature enhances audio clarity, ensuring that communication remains clear even in noisy environments. The GM380 operates in the UHF or VHF frequency bands, allowing flexibility in choosing the right model for specific operational needs. With up to 16 channels, users can easily switch between different communication lines, making it ideal for teams that require organized coordination.

In terms of build quality, the GM380 is designed to withstand challenging conditions. Its rugged construction is resistant to dust and moisture, meeting the IP54 standard, which ensures it can perform effectively in various weather scenarios. This durability is critical for field operations where radios may be exposed to the elements.

Ergonomics play a significant role in the GM380’s design, incorporating a user-friendly interface with a manageable keypad layout. The large, bright display allows for easy readability, even in low-light conditions, while the programmable buttons facilitate quick access to frequently used functions. This design consideration enhances the efficiency of personnel who rely on instant communication.

Motorola has also integrated safety features into the GM380, such as emergency alerts and man-down features, which are essential for field workers. The emergency alert can be activated with the push of a button, sending an urgent signal to other radios in the group. The man-down feature uses motion detection to identify if a user has fallen or is incapacitated, automatically alerting colleagues or control centers.

Battery life is another significant aspect of the GM380, as it supports long communication sessions without frequent recharging. The radio is compatible with different battery types, including rechargeable and lithium-ion options, catering to varied operational preferences.

In summary, the Motorola GM380 stands out for its blend of durability, user-friendliness, and advanced communication technologies. With features tailored for demanding environments, it remains a reliable choice for organizations that prioritize efficient and clear communication among teams in the field. Whether used in emergency response scenarios, construction sites, or logistics operations, the GM380 continues to be a trusted tool for professionals worldwide.
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