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Avaya one-X [EOL] vs ShoreTel Sky comparison

Avaya and Mitel are both solutions in the Unified Communications category. Additionally, 100% of Avaya users are willing to recommend the solution, compared to 80% of Mitel users who would recommend it.
Avaya one-X [EOL]
Read 1 Avaya one-X [EOL] review
    100% willing to recommend
    ShoreTel Sky
    Read 7 ShoreTel Sky reviews
    • 113 Views
    • 41 Comparison Views
    80% willing to recommend
     

    Comparison Buyer's Guide

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    Executive Summary
    We performed a comparison between Avaya one-X [EOL] and ShoreTel Sky based on real PeerSpot user reviews.

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    Buyer's Guide
    Unified Communications
    May 2025
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    Helped 857,028 peers since 2012

    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

    Avaya one-X [EOL]
    Average Rating
    8.0
    Number of Reviews
    1
    Ranking in other categories
    No ranking in other categories
    ShoreTel Sky
    Average Rating
    7.8
    Reviews Sentiment
    4.5
    Number of Reviews
    7
    Ranking in other categories
    Unified Communications (11th), IP Telephony & Unified Communications (6th)
     

    Featured Reviews

    KF
    Allows users to be on the move and still provide them with the ability to answer their desk phone
    one-X Communicator (aka softphone on computer) has enabled employees to work from anywhere, and have their desk phone with them, as long as they have a headset.  We also use one-X Mobile for tech support and sales force employees one-X Communicator and one-X Mobile applications have assisted the…
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    it_user269988 - PeerSpot reviewer
    The Service Portal is useful feature, but there are occasional outages.
    Phone Assistant is very useful, as is the Service Portal Occasional outages, but they're usually resolved very quickly. Customer Service: Customer service is generally responsive and courteous. Technical Support: Technical support folks are generally knowledgeable and helpful. We moved to VoIP…
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    857,028 professionals have used our research since 2012.
     

    Company Size

    By reviewers
    Large Enterprise
    Midsize Enterprise
    Small Business
    No data available
     

    Comparisons

    No data available
    No data available
     

    Product Reports

    Buyer's Guide
    Unified Communications
    May 2025
    Avaya one-X [EOL] reportDownload Avaya one-X [EOL] product report
    Buyer's Guide
    Unified Communications
    May 2025
    ShoreTel Sky reportDownload ShoreTel Sky product report
     

    Also Known As

    one-X
    No data available
     

    Overview

    Avaya one-X Portal is a web-based unified communications client that consolidates access to critical voice applications in a simple consistent interface. Avaya one-X Portal is implemented and managed centrally and does not require software to be installed on user PCs. It brings together control of telephony (Avaya Aura Communication Manager), conferencing (Avaya Meeting Exchange Enterprise), and messaging (Avaya Modular Messaging with the Avaya Message Storage Server).
    Avaya
    ShoreTel Sky have some useful features: ShoreTel Sky Communicator turns conference calls into active web sharing with video, presentation mode and more. ShoreTel Sky Mobility keeps you connected with deskphone features and functionality everywhere. ShoreTel Sky Advanced Application integrations amplify and enhance CRM and ERP functionality and ShoreTel Sky Contact Center improves the quality and quantity of profitable customer contacts.
    Mitel
     

    Sample Customers

    Arkadin, Linamar, Sochi 2014 Olympic Winter Games, Tata Technologies, Madison County Schools, I.R.I.S. Group, Zahlke, Alliance Inc., TransDiesel, Sun Life Financial
    Abacus Service Corporation, AIPAC, Airlie Womens Clinic, All Erection Crane And Rental Corporation, Aquent, Aspire, Bonobos, Brooklyn Brewery, Cable Scope, Caduceus
    Buyer's Guide
    Unified Communications
    May 2025
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    857,028 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.