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Digium Asterisk vs Kamailio SIP Server vs Oracle Communications Unified Communications comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

Mindshare comparison

As of May 2025, in the Unified Communications category, the mindshare of Digium Asterisk is 7.4%, down from 12.5% compared to the previous year. The mindshare of Kamailio SIP Server is 10.3%, down from 13.0% compared to the previous year. The mindshare of Oracle Communications Unified Communications is 2.1%, up from 1.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Unified Communications
 

Featured Reviews

AK
Call recording, call logging, and the stability are pivotal features for our clients
We mainly replace old telephony equipment. If, for instance, there is an old Alcatel telephone system (digital or analog), and the customer asks us for a new option for IP telephony, then we offer both the Cisco- and Asterisk-based systems. We know the billing, we know the pricing of the items and what we can offer with both solutions. There are multiple factors involved when selecting a vendor * stability * support * features. If the product is stable, the product has good support, and it has enough features which we can offer to our clients, then the product is under our consideration.
it_user183567 - PeerSpot reviewer
​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
No data available
Financial Services Firm
17%
Computer Software Company
15%
Real Estate/Law Firm
10%
Comms Service Provider
10%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
No data available
 

Also Known As

Asterisk
No data available
Oracle Communications IMS Infrastructure
 

Overview

 

Sample Customers

Yahoo, Penn Univeristy of Pennsylvania, US Army, Google, eBay
Asipto, Crocodile RCS Ltd, Edvina AB, Evariste Systems LLC, OpenXg Inc., Sipwise GmbH, VoIP Embedded
Information Not Available
Find out what your peers are saying about Cisco, 3CX, Kamailio and others in Unified Communications. Updated: April 2025.
851,174 professionals have used our research since 2012.