About Your Phone

•The keys "0", "2" - "9" can be used for speed dialing. Press and hold any of the keys to access a contact beginning with a specific letter. For example, to access a contact beginning with the letter "A", press and hold the key "2" and then press "Call" to speed dial.

In text input mode

•A short press on a key 0-9, displays the first available character on that specific key. The marked character is selected after a timeout, or when another key is pressed.

•To change to upper/lower case, press the * key before entering the character. The * key can also be used to display only the digits.

•To add space in the text, make a short press on key 0.

•The first character entered when adding/editing a name in the Contacts menu, will be an upper level character followed by lower level characters, unless the * key is pressed before entering the character. To switch between Abc, ABC, abc, and 123 the * key is pressed.

•A long press on the #-key displays special characters.

Headset

If you will use your handset frequently, we recommended you use a headset so you have both hands free. The headset comes in two versions: microphone integrated in the cable and microphone on a boom.

In order to achieve optimal audio quality with your headset we recommend you select the corresponding headset profile. See the Mitel 5603 Wireless Handset Configuration Guide for more information.

The default setting is microphone on a boom; that is, the audio is optimized for using a headset with microphone on a boom. You can change the headset profile in the menu as follows:

1.Enter the menu by pressing the “Menu” soft key.

2.Select "Settings".

3.Press "Select".

4.Select "Headset".

5.Select the corresponding headset profile from list.

6.Press "Select".

If the pre-configured headset profiles do not match the headset in use, or the audio performance is poor, you can configure an own headset profile in the PDM. See the Mitel 5603 Wireless Handset Configuration Guide. You can select profiles configured in the PDM using the handset menu.

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Mitel 5603 manual Headset, Text input mode
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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.
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