Mitel Application Suite vs Siemens OpenScape [EOL] comparison

Mitel and Siemens are both solutions in the Unified Communications category. Additionally, 100% of Mitel users are willing to recommend the solution.

Mitel Application Suite

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100% willing to recommend

Siemens OpenScape [EOL]

Mitel Application Suite

Siemens OpenScape [EOL]

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Executive Summary

We performed a comparison between Mitel Application Suite and Siemens OpenScape [EOL] based on real PeerSpot user reviews.

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Buyer's Guide

Unified Communications

December 2025

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Mitel Application Suite

Average Rating

10.0

Number of Reviews

Ranking in other categories

Unified Communications (7th), IP Telephony & Unified Communications (3rd)

Siemens OpenScape [EOL]

Average Rating

0.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Featured Reviews

it_user325977

Network Administrator II at a financial services firm with 51-200 employees

It provided a work-from-home solution, replacing both a land line and cell phone, that was easy to install and to administrate.

Ease of installation and administration Had a collegue that needed a phone solution for Work-from-Home. He didn't want to use his land line and the cell phone coverage was spotty at best. After only a few questions about installation, he was able to connect the Mitel and hit the ground running.…

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Comparisons

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Compared 25% of the time

Digium Asterisk vs Mitel Application Suite

Compared 22% of the time

Cisco Unified Communications vs Mitel Application Suite

Compared 19% of the time

Digium Switchvox vs Mitel Application Suite

Compared 17% of the time

Fortinet FortiVoice vs Mitel Application Suite

Compared 17% of the time

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Cisco Unified Communications vs Siemens OpenScape [EOL]

Compared 58% of the time

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Product Reports

Buyer's Guide

Unified Communications

December 2025

Download Mitel Application Suite product report

Buyer's Guide

Unified Communications

December 2025

Download Siemens OpenScape [EOL] product report

Also Known As

No data available

OpenScape

Overview

The Mitel Applications Suite consolidates a comprehensive set of unified business communications and collaboration applications onto a single server footprint with common installation, commissioning, and administration tools. MAS delivers capabilities such as unified messaging, speech-enabled auto-attendant, mobility, teleworking, sophisticated audio, video, and web conferencing, informal contact center functionality, and business reporting.

Mitel

Collaboration solution that includes web conferencing, application sharing, and white-boarding. Supports media and moderator switching.

Siemens

Sample Customers

Carlsberg Breweries, Hyatt Hotels, Louvre-Lens, Firmdale Hotels, Starwood Hotels and Resorts, Banfield Pet Hospital

China FAW Co. Ltd. R&D Center, NASA Goddard Space Flight Center, Pentair, Oklahoma City Air Logistics Center, Piaggio

Buyer's Guide

Unified Communications

December 2025

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879,371 professionals have used our research since 2012.

See our list of best Unified Communications vendors and best IP Telephony & Unified Communications vendors.

We monitor all Unified Communications reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.