Wired IP Phone vs. Wireless DECT IP Phone: Which is More Suitable for Offices and Businesses?

2026-01-18
VoIP
Wired IP Phone vs. Wireless DECT IP Phone: Which is More Suitable for Offices and Businesses?
 

Communication managers in offices and businesses face a fundamental challenge when choosing the right type of phone: should they opt for a wired IP phone to ensure stability and high quality, or a wireless DECT IP phone to provide mobility and flexibility? 

This choice depends on the nature of daily work, whether it involves sitting at a desk or moving around within the building. In this article, we will directly compare the two types, focusing on their advantages and disadvantages. 

 

What is a Wired IP Phone and How Does It Work in an Office Environment? 

A wired IP phone is the traditional and most stable option for office communications, relying on a direct wired connection to the network via an Ethernet cable. This type converts voice signals into digital data transmitted over the Internet Protocol (SIP), enabling high-quality calls without the need for traditional phone lines. In businesses, wired IP phones are preferred for their stable connection, unaffected by physical barriers or wireless congestion, making them ideal for employees who spend most of their time at desks. 

Advantages 

One of the most prominent advantages of wired IP phones is their connection stability, which minimizes disruptions caused by interference or weak signals. They also support advanced features such as HD Voice, group audio conferencing, and integration with call management software. In an office environment, this type enhances productivity by offering large display screens for call information and programmable buttons for quick access to multiple lines. Additionally, they support Power over Ethernet (PoE) technology, which powers the device through the same cable, simplifying installation and reducing the need for additional power outlets. 

Disadvantages 

Wired IP phones come with some drawbacks, most notably the restriction on mobility. The cable limits users from moving away from their desks, which can be problematic during meetings or when moving between departments. Their installation requires careful planning for cabling within the office, which may lead to visual clutter if not managed properly. In large companies, these phones may require periodic maintenance to prevent cable damage from daily movement. 

 

Wired IP Phone Models from Grandstream 

Modn Telecom offers a wide range of wired IP phones from Grandstream, such as the GXP series. For example, the GXP2170 is an advanced wired IP phone supporting six lines and six SIP accounts, featuring a 4.3-inch color touchscreen for clear information display. It includes dual Gigabit ports for fast connectivity, supports five-party audio conferencing, and offers HD audio for both the handset and speakerphone. This model is ideal for administrative offices where employees handle multiple calls without interruption. 

The GXP2130 supports four lines and four SIP accounts, with four programmable keys for quick access and a USB port for integration with additional devices like external speakers. These models are designed specifically for professional environments, offering seamless integration with corporate PBX systems. 

The GRP series from Grandstream adds another professional touch, such as the GRP2613, which supports three lines and three SIP accounts, with HD audio for the handset and speakerphone, and dual Gigabit ports for automatic switching. This model excels in small offices due to its design and support for automated installation, saving time for new teams. 

Additionally, the GRP2612 supports essential features like four-party audio conferencing, a clear LCD screen, and optional Wi-Fi support, though its primary focus remains wired connectivity for stability. 

Grandstream Phones

What is a Wireless DECT IP Phone and Its Role in Businesses? 

A wireless DECT IP phone represents an evolution in communication technology, relying on the DECT (Digital Enhanced Cordless Telecommunications) standard for wireless communication between the base station and the handset. This type also converts voice signals into IP data but uses dedicated phone frequencies (around 1.9 GHz) instead of Wi-Fi, ensuring minimal interference with other wireless networks. In businesses, DECT IP phones shine in environments requiring constant mobility, such as warehouses or open-plan offices where employees move between departments. 

Advantages 

One of the strongest advantages of DECT IP phones is their flexibility in movement, allowing users to roam within a range of up to 300 meters indoors or more outdoors without losing connectivity. This makes them ideal for field teams within a company, enabling employees to answer calls while moving between rooms or during meetings. They also support digital encryption for secure communications, protecting calls from eavesdropping, and offer long-lasting batteries for hours of continuous use. In a professional context, this type integrates with VoIP systems to support group conferencing and voicemail, with options to connect multiple handsets to a single base station for team coverage. 

Disadvantages 

DECT IP phones have some drawbacks, such as reliance on batteries that require periodic charging. They may face challenges with long-range connectivity in very large buildings without additional base stations. Audio quality may be slightly lower than wired phones in certain scenarios due to wireless compression, and installation requires placing the base station in a central location to ensure coverage. In high-mobility businesses, regular checks on signal strength may be necessary. 

 

Wireless DECT IP Phone Models from Grandstream 

Among Grandstream’s standout models in this category, the DP series is a primary option available through Modn Telecom. The DP755 is a robust base station that supports up to ten handsets, offering wide coverage for large offices and supporting twenty SIP accounts per system. It features DECT encryption for security and three-party audio conferencing, making it suitable for teams needing quick coordination on the go. The accompanying DP720 handset is lightweight with a long-lasting battery, an LCD screen for call display, and a noise-canceling button for clear calls in busy environments. 

The DP735 stands out with its durable, shock-resistant design, ideal for warehouses or industrial areas within businesses, supporting long-range wireless connectivity and clear HD audio. It integrates with the DP750 base station, which offers broader coverage, supports twenty lines per handset, and includes advanced security features like identity verification. This model improves efficiency in businesses reliant on mobility, such as service centers. 

Similarly, the DP722 offers a portable handset supporting twenty SIP accounts, three-party audio conferencing, and full call encryption, making it a flexible choice for open-plan offices where employees need to move without losing connectivity. 

The DP series also includes long-range options like the DP730, which works with powerful base stations to cover multi-story buildings, featuring notifications for incoming calls while on the move. These models transform DECT IP phones into essential tools for dynamic businesses. 

 

Wired IP Phone vs. Wireless DECT IP Phone 

Below is a table highlighting the key aspects of each type, focusing on the needs of offices and businesses. This table helps make an informed decision based on daily work requirements, with examples from Grandstream models available through Modn Telecom. 

Criteria 

Wired IP Phone 

Wireless DECT IP Phone 

Connectivity 

Wired via Ethernet cable (e.g., GXP2170, GRP2613) 

Wireless via DECT base station (e.g., DP722, DP735) 

Stability 

Very high, unaffected by wireless interference or physical barriers 

Good, but may be affected by thick barriers or long distances 

Audio Quality 

Clear, consistent HD audio (e.g., GXP2130 supports noise-free calls) 

Good HD audio, but may slightly degrade in crowded areas (e.g., DP720) 

Mobility 

Limited, restricted by cable (not suitable for movement) 

Flexible, with a range of up to 300 meters indoors (e.g., DP755 with multiple handsets) 

Installation 

Requires Ethernet cables and network planning, but easy to maintain 

Requires a central base station, quick setup but needs good coverage 

Power Consumption 

Supports PoE for power via Ethernet (e.g., GRP2612), no charging needed 

Relies on battery, requires periodic charging (e.g., DP730, long-lasting battery) 

Security 

Natural protection due to wired connection 

Advanced DECT encryption (e.g., DP750) to prevent eavesdropping 

Audio Conferencing 

Supports larger sessions (e.g., GXP2170: five parties) 

Supports smaller sessions (e.g., DP722: three parties) 

Integration 

Ideal for fixed call management software (e.g., GRP2613 supports SIP) 

Integrates with mobile applications (e.g., DP735 supports multi-account SIP) 

Ideal Use 

Administrative offices, call centers, financial departments 

Warehouses, open-plan offices, sales or logistics teams 

Grandstream Phones

When to Choose a Wired IP Phone or a Wireless DECT IP Phone for Your Office or Business? 

The choice between a wired IP phone and a wireless DECT IP phone depends on your work style. If your business relies on fixed workstations with long calls, a wired IP phone like the GRP2613 is the optimal choice, offering superior audio quality and seamless integration with other office devices. In this case, management teams can focus on tasks without worrying about connection interruptions, making it ideal for call centers or financial departments where precision is critical. 

However, if your business involves constant mobility, such as in sales or logistics, a wireless DECT IP phone becomes essential. Models like the DP735, which withstands tough conditions and allows immediate responses while moving, enhance productivity by reducing time lost returning to the office. They are preferred in warehouses or open-plan offices to improve team communication. 

 

Conclusion 

Choosing between a wired IP phone and a wireless DECT IP phone depends on your company’s operational needs. If you seek superior audio quality and guaranteed stability in a fixed office environment, a wired IP phone is the ideal choice to support administrative tasks and long communications. 

On the other hand, if mobility and flexibility are essential, as in open-plan offices or warehouses, a wireless DECT IP phone offers freedom of movement while maintaining call quality. In some cases, combining both types may be the optimal solution to meet diverse needs within the company. 

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