About Your Phone

The “Calls” menu contains call lists, call time, and call services*. Call services is configured in the PDM.

The “Settings” menu contains personal handset settings such as changing the ringer volume, selecting language, etc.

* This feature is system dependent.

Keys and Buttons

Some keys have different functions depending on the phone state or the length of time that you press a key.

Short press = Press and release the key in less than one second.

Long press = Press and hold down the key for longer than one second and then release.

Off-hook Key

This key is used to answer calls, to pre-dial numbers and as a short cut to the Call list. One short press in standby mode opens the call list.

On-hook, and On/Off Key

This key is used to disconnect calls and return to the main screen. A long press in standby mode switches the handset on/off.

Navigation Key

Use this key to step in the menu, and when working in text mode.

, , , and are used for stepping left/right and up/down in the menu.

Sound off Key

A long press on the Sound off Key in idle mode toggles between ring signal on/off. When you receive an incoming call, a long press on the key silences the ring signal. During a call, a long press on the key changes between microphone on/off.

Key Lock, and Upper/Lower Case Key

This key locks the keypad in combination with the soft key "Lock". It is also used for switching between upper/lower case and digits.

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Mitel 5603 manual Keys and Buttons

5603 specifications

The Mitel 5603 is a versatile and feature-rich desk phone designed for professional environments where effective communication is paramount. With its modern design and robust functionalities, the phone caters to the needs of businesses of all sizes, making it a popular choice for organizations looking to enhance communication efficiency.

One of the standout features of the Mitel 5603 is its high-definition audio quality. Utilizing wideband audio technology, the phone delivers crystal-clear sound that significantly improves the clarity of conversations. This feature is essential in busy office environments, where background noise can often interfere with communication. The wideband capabilities ensure that every word is heard, making it easier for employees to collaborate and engage with clients.

The Mitel 5603 also boasts a user-friendly interface, equipped with a large, backlit display that presents information clearly, even in low-light conditions. This makes it easy for users to navigate menus and access various features swiftly. The phone supports multiple programmable keys, allowing users to customize their experience by assigning frequently used functions or contacts for quick access. The intuitive layout and customizable settings aid in boosting productivity among staff.

Supporting both VoIP and traditional telephony, the Mitel 5603 offers flexibility in terms of deployment and integration with existing communication systems. Its compatibility with various Mitel solutions ensures seamless integration with unified communications, enhancing collaboration tools that many businesses rely on today.

Additionally, the phone is equipped with multiple connectivity options, including Ethernet ports that enable simple network integration. The Mitel 5603 supports Power over Ethernet (PoE), which allows the device to receive power and data through a single cable, simplifying installation and reducing clutter.

The Mitel 5603 is optimized for mobility as well. With built-in Bluetooth technology, users can connect their smartphones for hands-free calling or sync their contacts effortlessly. This feature is particularly beneficial for employees who frequently transition between their desk phones and mobile devices.

In summary, the Mitel 5603 is an advanced desk phone that merges quality audio performance with modern features. Its wideband audio, intuitive interface, customizable keys, flexibility for various telephony systems, and Bluetooth connectivity make it an excellent choice for businesses seeking a reliable communication solution to enhance productivity and collaboration among teams.