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MiVoice Office 400 Reviews & Product Details

The MiVoice Office 400 opens the full performance spectrum of modern business communications, meeting professional communications requirements by being highly responsive to innovations and new ways of working. The solution is designed for the small and medium segments, offering strong UCC, contact center and mobility functionality, as well as a broad phone portfolio, all completely integrated with the call manager.

Seller

Mitel Networks

Discussions

MiVoice Office 400 Community

Overview by

George Despinic

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Josh M.

Director

Computer & Network Security

Enterprise (> 1000 emp.)

8/2/2025

"Still modern with the option to use older hardware"

4/5

What do you like best about MiVoice Office 400?

Mitel have been around a long time and this was a welcomed upgrade from 250, bringing with it the option for a hybrid environment offering both resiliency and an improved quality of service. Review collected by and hosted on G2.com.

What do you dislike about MiVoice Office 400?

The configuration of a Mitel system can always be a little tricky but Mitel are always on hand to assist either on or off site and once you get the hang of the diagnostics and programming software it’s easy to get your head around. Review collected by and hosted on G2.com.

SK

Surjeet K.

Senior Manager

Mid-Market (51-1000 emp.)

5/11/2024

"From design implementation day to day management"

4/5

What do you like best about MiVoice Office 400?

I'm extremely please with our Mitel system, as are our end-user! From design, to implementation to day-to-day management, it's been seamless. The Mitel team has been professional, understanding and accommodating, always willing to listen to our suggestions or concerns and adjust accorindly. I've worked with many phones systems over the years, Mitel hands down has been the best! Review collected by and hosted on G2.com.

What do you dislike about MiVoice Office 400?

In a busy work place a reliable phone system is a huge need. Sad to say, this system is the apocalypse of phones. Calls are dropped, people get stuck in a perpetual abyss and picking them up in the first place requires more work than technology should allow. Simple, reliable and dependable is not this system. Work orders put in fail to make it better Review collected by and hosted on G2.com.

What problems is MiVoice Office 400 solving and how is that benefiting you?

Switched to Mitel when we cut the cord with Verizon. Excellent call clarity, more features, and about 1/3 the price of our old landline service. But the absolute icing on the cake is the customer service. Our old provider threw lots of obstacles in the way of porting our number, system upsells, and the Mitel team was superb in dealing with the issue. Calls answered immediately by live people who knew what they were doing and were pleasant to deal with, and emails answered within couple of hours instead of days Review collected by and hosted on G2.com.