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Kamailio SIP Server vs Skype for Business comparison

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Executive Summary

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

Kamailio SIP Server
Average Rating
10.0
Number of Reviews
1
Ranking in other categories
Unified Communications (8th)
Skype for Business
Average Rating
7.8
Reviews Sentiment
6.8
Number of Reviews
64
Ranking in other categories
Virtual Meetings (5th)
 

Mindshare comparison

Kamailio SIP Server and Skype for Business aren’t in the same category and serve different purposes. Kamailio SIP Server is designed for Unified Communications and holds a mindshare of 3.8%, down 9.0% compared to last year.
Skype for Business, on the other hand, focuses on Virtual Meetings, holds 3.9% mindshare, down 8.6% since last year.
Unified Communications Mindshare Distribution
ProductMindshare (%)
Kamailio SIP Server3.8%
Cisco Unified Communications8.6%
3CX Live Chat8.4%
Other79.2%
Unified Communications
Virtual Meetings Mindshare Distribution
ProductMindshare (%)
Skype for Business3.9%
Zoom Workplace Business5.8%
Webex5.0%
Other85.3%
Virtual Meetings
 

Featured Reviews

it_user183567 - PeerSpot reviewer
PHP Dev & Telecoms Engineer at a marketing services firm with 51-200 employees
​The server itself does load balancing however building a fail-over for it is difficult
The server itself does load balancing however the most difficult thing I found was building a fail-over for it. However, if you want to build a fail-over for it that's the tricky part since most sip traffic is routed using UDP. There are plenty of amazing TCP load balancers out there such as HAProxy but none for UDP. You need to use something like Keepalive and fail-over IP and restart the server on fail-over
MD
Assistant Information Technology Officer at a retailer with 10,001+ employees
Internal communication has become more efficient while mobile usage still needs improvement
The honest answer is that the product has not really evolved in some time. Microsoft has been pushing everyone towards Teams and Skype for Business has been in maintenance mode for a while. The mobile experience is also not great. Staff who try to use it on their phones find it less reliable than the desktop version, calls drop more, and the interface is clunky. For a modern workforce that expects everything to work on mobile, that is a gap. Despite the initial setup challenges and mobile issues, we have noticed positive outcomes for our organization since adopting Skype for Business. I rate Skype for Business seven out of ten. I think that Skype for Business has served us well for what it is. A government office has different expectations from a fast-moving private company. We value stability and security over the newest features. On those terms, Skype for Business has delivered.

Quotes from Members

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

Pros

"This product can scale insanely, the fact that it can handle hundreds of thousands of subscribers is great and means you won't have to worry about scalability for a very long time."
"The most valuable features of the solution are that it is quick and easy to use. It is a good tool for group calls."
"Using it is very straightforward, and it just sits on your desktop as an icon, so it's easy to access when you need it."
"The calling features are the most valuable, especially now as we are working remotely because of this pandemic."
"Our employees use this solution for a communal space to collaborate for organizational decision making."
"It's a good and stable product that suits my needs because I've been working from home for the past couple of years."
"I like the fact that it opens up your video conferencing, and, in many cases, the audio at the same time."
"The solution is stable and scalable."
"We like the easy provisioning of Skype for Business Conferencing."
 

Cons

"Would be nice to have more sample config files for different kinds of scenarios rather then just one default config file."
"The solution requires deployment on a Microsoft server and its performance is heavy because it consumes too many resources from the RAM."
"I feel bored with the look and feel of the tool, so it should be changed."
"We overcame the audio quality issues by asking users to use the 'Call Me' feature with their desk phone."
"The cost of Skype for Business has room for improvement."
"If you don't write it down during the meeting, after the meeting closes, it's gone forever. That can be quite frustrating."
"There might be some invitation issues with Skype for Business."
"This is not a solution I would recommend."
"I don't recall coming across any big missing features."
 

Pricing and Cost Advice

Information not available
"The licensing is billed on a yearly basis."
"Our company pays for a license for us to use the solution."
"We negotiated a fair price with Microsoft. It is definitely worthwhile to negotiate with them for the best price for your solution."
"When it comes to the pricing of the solution, I rate it as a five out of ten. It falls somewhere in the middle between being cheap and expensive."
"To realize value from the purchase of Skype Business, you need to take advantage of all the important functions of the program."
"The cost of Skype for Business is incorporated into our Office 365 licenses."
"We had a license for every one of our users to use Skype for Business. The license we used was part of an overall Microsoft license package."
"A license is required to use the solution."
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Top Industries

By visitors reading reviews
No data available
Outsourcing Company
14%
Financial Services Firm
13%
Construction Company
10%
Comms Service Provider
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise19
Large Enterprise28
 

Questions from the Community

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What is your experience regarding pricing and costs for Skype for Business?
If I think back, my experience with pricing, setup cost, and licensing involves accessing it through our Microsoft Enterprise Agreement which covers the whole Office suite including Skype for Busin...
What needs improvement with Skype for Business?
The honest answer is that the product has not really evolved in some time. Microsoft has been pushing everyone towards Teams and Skype for Business has been in maintenance mode for a while. The mob...
What is your primary use case for Skype for Business?
My main use case for Skype for Business is internal communication across departments and between different government offices. We have staff spread across multiple locations in Malacca, and before ...
 

Also Known As

No data available
Skype for Business Plan 1, Skype for Business Plan 2, Lync Server
 

Overview

 

Sample Customers

Asipto, Crocodile RCS Ltd, Edvina AB, Evariste Systems LLC, OpenXg Inc., Sipwise GmbH, VoIP Embedded
EmpireCLS Worldwide Chauffeured Services,LA Fitness, MedcoEnergi International, Tampa General Hospital, and HopewellHoldings Limited.
Find out what your peers are saying about Cisco, 3CX, Digium and others in Unified Communications. Updated: October 2026.
920,929 professionals have used our research since 2012.