Kamailio SIP Server vs Mitel Communications Director comparison

Kamailio and Mitel are both solutions in the Unified Communications category. Kamailio is ranked #3, while Mitel is ranked #20. Kamailio holds a 9.7% mindshare in UC, compared to Mitel’s 2.0% mindshare. Additionally, 100% of Kamailio users are willing to recommend the solution, compared to 100% of Mitel users who would recommend it.

Kamailio SIP Server

Read 1 Kamailio SIP Server review

441 Views
256 Comparison Views

100% willing to recommend

Mitel Communications Director

Read 2 Mitel Communications Director reviews

69 Views
34 Comparison Views

100% willing to recommend

Kamailio SIP Server

Mitel Communications Director

Comparison Buyer's Guide

Download the report

Executive Summary

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

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

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

Buyer's Guide

Unified Communications

May 2025

Download the complete report

Helped 856,873 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

Kamailio SIP Server

Ranking in Unified Communications

3rd

Average Rating

10.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mitel Communications Director

Ranking in Unified Communications

20th

Average Rating

9.0

Number of Reviews

Ranking in other categories

IP Telephony & Unified Communications (4th)

Mindshare comparison

As of June 2025, in the Unified Communications category, the mindshare of Kamailio SIP Server is 9.7%, down from 12.2% compared to the previous year. The mindshare of Mitel Communications Director is 2.0%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Unified Communications

Featured Reviews

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

Read full review

it_user217503

Owner at a comms service provider with 51-200 employees

An easy to use product. Numerous applications are available for it.

The MCD or Mitel Communications Director is now called the MiVoice Business- Great product- we have had it for many years when it was called the MCD or 3300. Mitel has always had a great migration program and has allowed us to upgrade the system over time, upgrades are easy and can be done as we…

Read full review

See which vendors are best for you

Use our free recommendation engine to learn which Unified Communications solutions are best for your needs.

See recommendations

856,873 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Financial Services Firm

16%

Computer Software Company

12%

Real Estate/Law Firm

10%

Comms Service Provider

10%

No data available

Comparisons

Genesys PureConnect vs Kamailio SIP Server

Compared 29% of the time

Cisco Unified Communications vs Kamailio SIP Server

Compared 27% of the time

3CX Live Chat vs Kamailio SIP Server

Compared 24% of the time

Digium Asterisk vs Kamailio SIP Server

Compared 20% of the time

More Kamailio SIP Server Competitors

No data available

Product Reports

Buyer's Guide

Unified Communications

May 2025

Download Kamailio SIP Server product report

Buyer's Guide

Unified Communications

May 2025

Download Mitel Communications Director product report

Also Known As

No data available

Communications Director

Overview

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

The Mitel Integrated Communications Director features an automated voice mail system for handling telephone calls and taking messages. The system provides you with a mailbox for sending and receiving messages, which you can personalize with your name, a greeting, and a private passcode.

Mitel

Sample Customers

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

Banfield Pet Hospital, Carlsberg Breweries

Buyer's Guide

Unified Communications

May 2025

Download Free Report

Find out what your peers are saying about Cisco, 3CX, Kamailio and others in Unified Communications. Updated: May 2025.

DOWNLOAD NOW

856,873 professionals have used our research since 2012.

See our list of best 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.