Cisco Unified Communications vs Kamailio SIP Server comparison

Cisco and Kamailio are both solutions in the Unified Communications category. Cisco is ranked #1 with an average rating of 7.7, while Kamailio is ranked #5. Cisco holds a 9.8% mindshare in UC, compared to Kamailio’s 8.5% mindshare. Additionally, 100% of Cisco users are willing to recommend the solution, compared to 100% of Kamailio users who would recommend it.

Cisco Unified Communications

Read 9 Cisco Unified Communications reviews

829 Views
514 Comparison Views

100% willing to recommend

Kamailio SIP Server

Read 1 Kamailio SIP Server review

403 Views
367 Comparison Views

100% willing to recommend

Cisco Unified Communications

Kamailio SIP Server

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between Cisco Unified Communications and Kamailio SIP Server based on real PeerSpot user reviews.

Find out what your peers are saying about Cisco, 3CX, Digium and others in Unified Communications.

To learn more, read our detailed Unified Communications Report (Updated: December 2025).

Buyer's Guide

Unified Communications

December 2025

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Helped 879,310 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

Cisco Unified Communications

Ranking in Unified Communications

1st

Average Rating

8.4

Number of Reviews

Ranking in other categories

IP Telephony & Unified Communications (1st)

Kamailio SIP Server

Ranking in Unified Communications

5th

Average Rating

10.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of December 2025, in the Unified Communications category, the mindshare of Cisco Unified Communications is 9.8%, down from 14.9% compared to the previous year. The mindshare of Kamailio SIP Server is 8.5%, down from 9.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Unified Communications Market Share Distribution
Product	Market Share (%)
Cisco Unified Communications	9.8%
Kamailio SIP Server	8.5%
Other	81.7%

Unified Communications

Featured Reviews

Kani Kumar J

Cisco VOIP Engineer at a computer software company with 1,001-5,000 employees

Reliable customer communication and good third-party integrations with minor server update issues

Cisco supports third-party gadgets, including workforce management systems. These can be directly integrated with Cisco, a feature not widely supported by other contact centers. Additionally, redundancy is set up, meaning if one side of the server goes down, the other side will take over to prevent the contact center from completely failing.

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it_user183567

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

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Top Industries

By visitors reading reviews

Computer Software Company

11%

Educational Organization

11%

Manufacturing Company

10%

Government

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	5
Midsize Enterprise	2
Large Enterprise	3

No data available

Questions from the Community

What needs improvement with Cisco Unified Communications?

I want to see improvements, especially for the GUI interface, as it should be much easier and user-friendly in Cisco Unified Communications. It would be beneficial if it could be more web interface...

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What is your primary use case for Cisco Unified Communications?

We use this only for communication purposes, which includes a few use cases for it. We haven't used the video calls and other features because we based our use on basic communication, so I cannot g...

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What is your experience regarding pricing and costs for Cisco Unified Communications?

Regarding price and value, it is already expired and has reached end of life.

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Comparisons

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Compared 33% of the time

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Compared 20% of the time

Alcatel-Lucent OmniPCX Enterprise Communication Server vs Cisco Unified Communications

Compared 11% of the time

Digium Asterisk vs Cisco Unified Communications

Compared 6% of the time

Spectrum Enterprise vs Cisco Unified Communications

Compared 5% of the time

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Alcatel-Lucent Rainbow vs Kamailio SIP Server

Compared 35% of the time

3CX Live Chat vs Kamailio SIP Server

Compared 21% of the time

Digium Asterisk vs Kamailio SIP Server

Compared 20% of the time

Oracle Communications Unified Communications vs Kamailio SIP Server

Compared 12% of the time

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Product Reports

Buyer's Guide

Cisco Unified Communications

December 2025

Download Cisco Unified Communications product report

Buyer's Guide

Unified Communications

December 2025

Download Kamailio SIP Server product report

Overview

With Cisco Voice and Unified Communications, you can unify all your voice, video, data, and mobile applications for interactive collaboration.

Cisco

Kamailio is an Open Source SIP Server released under GPL, able to handle thousands of call setups per second. Kamailio can be used to build large platforms for VoIP and realtime communications Ð presence, WebRTC, Instant messaging and other applications. It can also easily be applied to scaling up SIP-to-PSTN gateways, PBX systems or media servers like Asterisk, FreeSWITCH or SEMS.

Kamailio

Sample Customers

Afni, Allied Irish Banks, Bellevue, Came Group, Children's Hospital Colorado, Erickson Living, IDEALondon, Instituto Zaldivar, John Lewis, Linz AG, London Hydro, Lone Star College System, Lone Star College System, Mondi Group, North West Redwater, Park Nicollet, Pentana Solutions Australia, Pilatus, Pirelli, Portugal Ministry, Presidio Inc., Republic Bank & Trust Company, Saipem, SickKids Foundation, Top Right Group, Vital Images

Asipto, Crocodile RCS Ltd, Edvina AB, Evariste Systems LLC, OpenXg Inc., Sipwise GmbH, VoIP Embedded

Buyer's Guide

Unified Communications

December 2025

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