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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Kamailio SIP Server

    Score9 out of 10
    N/AThe Kamailio SIP Server, formerly known as OpenSER or SER, is an open source VoIP and communications platform.N/A

    Versature

    Score9 out of 10
    N/AVersature is a telephony and VoIP software solution from Versature.N/A
    Pricing
    Kamailio SIP ServerVersature
    Editions & Modules
    No answers on this topic
    No answers on this topic
    Offerings
    Pricing Offerings
    Kamailio SIP ServerVersature
    Free Trial
    NoNo
    Free/Freemium Version
    NoNo
    Premium Consulting/Integration Services
    NoNo
    Entry-level Setup FeeNo setup feeNo setup fee
    Additional Details——
    More Pricing Information
    Features
    Kamailio SIP ServerVersature
    Cloud PBX
    Comparison of Cloud PBX features of Kamailio SIP Server and Versature
    Feature
    Kamailio SIP Server
    8.0
    1 Ratings
    1% above category average
    Versature
    8.0
    1 Ratings
    1% above category average
    Hosted PBX8.01 Ratings00 Ratings
    Multi-level Interactive Voice Response (IVR)9.01 Ratings00 Ratings
    User templates7.01 Ratings8.01 Ratings
    Call reports8.01 Ratings8.01 Ratings
    Directory of employee names8.01 Ratings8.01 Ratings
    Call Management
    Comparison of Call Management features of Kamailio SIP Server and Versature
    Feature
    Kamailio SIP Server
    8.4
    1 Ratings
    2% above category average
    Versature
    9.5
    1 Ratings
    14% above category average
    Answering rules9.01 Ratings10.01 Ratings
    Call recording8.01 Ratings00 Ratings
    Call park9.01 Ratings00 Ratings
    Call screening8.01 Ratings00 Ratings
    Message alerts8.01 Ratings9.01 Ratings
    VoIP system collaboration
    Comparison of VoIP system collaboration features of Kamailio SIP Server and Versature
    Feature
    Kamailio SIP Server
    7.5
    1 Ratings
    6% below category average
    Versature
    9.0
    1 Ratings
    13% above category average
    Video conferencing7.01 Ratings00 Ratings
    Audio conferencing8.01 Ratings9.01 Ratings
    Video screen sharing7.01 Ratings00 Ratings
    Instant messaging8.01 Ratings00 Ratings
    Best Alternatives
    Kamailio SIP ServerVersature
    Small Businesses
    CallFire
    Score9.7 out of 10
    CallFire
    Score9.7 out of 10
    Medium-sized Companies
    Fuze
    Score8.2 out of 10
    Fuze
    Score8.2 out of 10
    Enterprises
    Cisco Unified Communications Manager (Call Manager)
    Score8.3 out of 10
    Cisco Unified Communications Manager (Call Manager)
    Score8.3 out of 10
    All AlternativesView all alternativesView all alternatives
    User Ratings
    Kamailio SIP ServerVersature
    Likelihood to Recommend
    9.0
    (1 ratings)
    9.0
    (1 ratings)
    Support Rating
    -
    (0 ratings)
    10.0
    (1 ratings)
    User Testimonials
    Kamailio SIP ServerVersature
    Likelihood to Recommend
    Open Source
    Kamailio SIP Server is very well suited if you want to secure your main servers; it can perfectly act as a proxy server and a gateway to your main server. It also does load balancing and call transfers easily based on the configurations done.
    Incentivized
    Read full review
    Versature
    Versature is versatile - it will likely perform very well in any office setting. It performs especially well with remote employees. When we had to move our operations to home during the pandemic, everyone was able to smoothly transfer calls to home or cell phones, so we didn't have to transfer equipment from one place to another. When we were in an office setting, however, Versature was also quite the helpful system. I don't see us moving away from Versature in a long time, whether we stay working remotely or we move back into the office.
    Incentivized
    Read full review
    Pros
    Open Source
    • Proxy server.
    • Security Firewall.
    • SIP to PSTN gateway.
    Incentivized
    Read full review
    Versature
    • Working remotely: switching our operations to home was done easily through Versature's online portals.
    • Voicemail: transcription/voicemails received through email are very helpful.
    • Answering rules: since you can have several answering rules over various timelines, Versature allows you to customize your answering rules properly, which makes better use of your time.
    Incentivized
    Read full review
    Cons
    Open Source
    • Interportability
    • SIP conversions.
    Incentivized
    Read full review
    Versature
    • Voicemail transcription that recognizes French: whenever a voicemail comes in French, the transcription is irrelevant.
    • Better voicemail transcription overall: at times, if the person leaving a message speaks too fast or doesn't speak clearly enough, the transcription isn't helpful.
    • Integration of time frames with answering rules: currently two windows when it could be just one in my opinion.
    Incentivized
    Read full review
    Support Rating
    Open Source
    No answers on this topic
    Versature
    I usually scour the help section/articles on their website if I am unsure of how to proceed with something. However, it has happened once or twice that I haven't found the answer I was looking for, and I therefore hopped on to their live chat. Their agents are always polite, kind, and quick to answer any question. If they don't know the answer, they will find it for you after a short pause. For those who prefer calling in and speaking with someone, you can just dial 611 from any Versature phone to reach an agent
    Incentivized
    Read full review
    Alternatives Considered
    Open Source
    As Kamailio SIP Server is an open source, the major impact is on cost; it's free to use compared to any other Softswitch or server in the market. You can also customize it to your need and use the features that you need, which is one of the major plus points for the Kamailio SIP Server. And one server is enough to handle thousands of calls simultaneously.
    Incentivized
    Read full review
    Versature
    No answers on this topic
    Return on Investment
    Open Source
    • As its open source ROI is excellent.
    Incentivized
    Read full review
    Versature
    • Good cost when we had shopped around.
    • Good value for the price paid.
    Incentivized
    Read full review
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