Asterisk

Open-source modular communication system

4,4 /5 (33 reviews) Write a Review!

Asterisk Overview

What is Asterisk?

Asterisk by Digium is an open source communications tool that provides voice and video communication solutions for small, mid-size and large organizations across the globe. The software is freely available and can connect seamlessly with legacy communication systems and VoIP. Asterisk includes many pre-built components that have the capability to handle simple as well as complex voice, video and text communications.

Asterisk telephony solutions provide both classical PBX functionality as well as advanced features including call recording, call routing, call snooping, call waiting, caller ID blocking, blacklists, authentication and conference bridging. Other features offered by Asterisk include SMS messaging, trunking, transcoding, text-to-speech conversion, interactive voice response, flexible extension logic and overhead paging. The software is scalable, allows for the integration of physically separate installations and supports a unified dialplan across offices located in multiple locations. The tool follows both VoIP protocols such as UNIStim, Google Talk, IAX, Jingle/XMPP, SIP, MGCP, and SCCP as well as traditional telephony protocols such as FXS, FXO, Loopstart, Kewlstart, E&M, and others.

Asterisk has a modular design and includes several different components that can be combined to build unified communication solutions including VoIP gateways, phone systems, voicemail servers, conference bridges and IVR servers. Over 1,000 companies in 170 countries use Digium’s phone systems including Yahoo, University of Pennsylvania, Google, U.S. Army, eBay and many of the Fortune 1000 companies.

Asterisk Overview

Pricing

Starting from
US$595,00

Pricing options

Free Trial
Open Source
Value for money

Pricing for Asterisk Support Services:

Single System (Level 1) – $595 per year
Single System (Level 2) – $1,995 per year
Multi-System (Level 3) – $3,995 per year
Multi-System (Level 4) - $7,995 per year


Asterisk Features

Devices
Business size
S M L
Markets
United States, Canada, United Kingdom, Australia
Supported Languages
English

Media

Adding phones on Asterisk extensions
Call detail records in Asterisk
Deploying VoIP services with Asterisk
Asterisk supports interactive voice response (IVR)
Trunks and extensions in Asterisk
Whitelists and Blacklists in Asterisk
Asterisk screenshot: Adding phones on Asterisk extensions Asterisk screenshot: Call detail records in Asterisk Asterisk screenshot: Deploying VoIP services with Asterisk Asterisk screenshot: Asterisk supports interactive voice response (IVR) Asterisk screenshot: Trunks and extensions in Asterisk Asterisk screenshot: Whitelists and Blacklists in Asterisk

Asterisk Reviews

Asterisk Reviews

Overall rating
4,4
/
5
Excellent
17

Very good
12

Average
3

Poor
1

Terrible
0

Value for Money
4,7
Features
4,6
Ease of Use
3,5
Customer Support
3,6
88% recommended this app
Wobe muki marguerite N.

Phone system, simple and the best!!!

An amazing free platform! In my industry, we use it everyday and it eases our day-to-day communications. Asterisk, you are unique!!!!


Matthew M.

Why pay for a PBX when this is free?

I have setup and managed many asterisk installs for various use cases and love working with it, all be it I'm very familiar by now but it's not difficult to get the hang of it. Best solution for an in-house PBX should you have the ability to manage and maintain it.


Emil H.

Good open source VOIP solution

If you want a good and free open source VOIP solution that you can manage in house, then Asterisk is a good choice. It can be easily installed (not upgraded however) and managed by IT system administrators. Is logic (queues, SIP opening and context for calling) is something that you will figure out quite quickly. You can even use multiple WAN ports and multiple SIP trunk operators with the same server so this is also an advantage. The biggest disadvantage is that if a new version comes out it is easier to do the fresh installation then rater to go and try to make an upgrade. Overall, as an open source system it is a great value for money.


William F.

Small Business Phone System

We use this everyday for our phones. We test a variety of platforms on a regular basis, but we have always stuck with Asterisk because it does everything we need.


Verified Reviewer

Simply the best


Wobe muki marguerite N.
Industry: Education Management
Company size: 11-50 Employees

Phone system, simple and the best!!!

Used Daily for 1+ year
Reviewed on 2019/11/22
Review Source: Capterra

An amazing free platform! In my industry, we use it everyday and it eases our day-to-day communications. Asterisk, you are unique!!!!

Pros

Asterisk is a real time voice and video application, the following points made me recommend it to my industry.
-It is a free software!!! so amazing with the great solutions it provides
-It is easy to setup and user friendly. Working as the Network and systems administrator in my industry (education), I discovered asterisk and amazingly I needed not a sophisticated machine to run it and it worked well on VM. Very easy to set up and the user interface is as friendly as I was able to navigate with ease.
-Asterisk is stable, reliable and SIP configurations are perfect and so adaptable. In my industry (education)we use it for conference calls and employees answer calls on Asterisk.
-Presently, I am including students in the system such that while on campus they can benefit from free phone calls while on campus. Asterisk is really amazing!!!

Cons

-One needs to be dedicated to make it work

Rating breakdown

Value for Money
Ease of Use
Customer Support

Likelihood to recommend: 9.0/10

Matthew M.
Industry: Telecommunications
Company size: 2-10 Employees

Why pay for a PBX when this is free?

Used Daily for 2+ years
Reviewed on 2019/11/26
Review Source: Capterra

I have setup and managed many asterisk installs for various use cases and love working with it, all be it I'm very familiar by now but it's not difficult to get the hang of it. Best solution for an in-house PBX should you have the ability to manage and maintain it.

Pros

asterisk is a reliable and versatile PBX / IP-PBX. There are many great UI's to make management even easier and the open-source nature allows you to customize scripts and telephony applications to individual needs. I can't make an argument to pay for a commercial software unless some type of included support is paramount.

Cons

There are a lot of components to this application which can make standardizing versions a bit complicated. There are pre-made packages available for install which are stabilized so I recommend one of them (asteriskNOW or FreepBX for example) for anyone just starting out.

Rating breakdown

Value for Money
Ease of Use

Likelihood to recommend: 10.0/10

Emil H.
Industry: Financial Services
Company size: 11-50 Employees

Good open source VOIP solution

Used Daily for 1+ year
Reviewed on 2017/04/20
Review Source: Capterra

If you want a good and free open source VOIP solution that you can manage in house, then Asterisk is a good choice. It can be easily installed (not upgraded however) and managed by IT system administrators. Is logic (queues, SIP opening and context for calling) is something that you will figure out quite quickly. You can even use multiple WAN ports and multiple SIP trunk operators with the same server so this is also an advantage. The biggest disadvantage is that if a new version comes out it is easier to do the fresh installation then rater to go and try to make an upgrade. Overall, as an open source system it is a great value for money.

Rating breakdown

Value for Money
Ease of Use
Customer Support

Likelihood to recommend: 6.0/10

William F.
Industry: Computer & Network Security
Company size: 2-10 Employees

Small Business Phone System

Used Daily for 2+ years
Reviewed on 2018/08/20
Review Source: Capterra

We use this everyday for our phones. We test a variety of platforms on a regular basis, but we have always stuck with Asterisk because it does everything we need.

Pros

Asterisk has nearly everything you would need in a phone system for a small business. With some technical knowledge you can get the free version of this and do everything yourself with very minor costs to your bottom line.

Cons

The learning curve on Asterisk systems is steep. If you want to do anything custom, you will pretty much have to hire someone to do it for you unless you have a lot of experience and technical knowledge. Much of this can be overcome by using a GUI such as FreePBX.

Rating breakdown

Value for Money
Ease of Use
Customer Support

Likelihood to recommend: 10.0/10

Verified Reviewer
Industry: Religious Institutions
Company size: 201-500 Employees

Simply the best

Used Daily for 2+ years
Reviewed on 2019/02/12
Review Source: Capterra

Pros

This is the BEST VOIP software you can use. First of all its a free base. It has so many features that are amazing for small and large business setups. You can buy really cheap analog lines and hook up to this system. And just use your own phones. It saves 1000's of dollars each year from competitive voip systems.

Cons

The software can be buggy when first setting up and interfacing cards. It works great but if you are not familiar with command promp you will not be fully able to set it up.

Rating breakdown

Ease of Use
Customer Support

Likelihood to recommend: 10.0/10

User recommendation
8,8/10
Based on 33 user ratings
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Asterisk Pricing

Asterisk Pricing

Starting from
US$595,00
Free Trial
Open Source
Value for money

Pricing for Asterisk Support Services:

Single System (Level 1) – $595 per year
Single System (Level 2) – $1,995 per year
Multi-System (Level 3) – $3,995 per year
Multi-System (Level 4) - $7,995 per year

Pricing for Asterisk Support Services:

Single System (Level 1) – $595 per year
Single System (Level 2) – $1,995 per year
Multi-System (Level 3) – $3,995 per year
Multi-System (Level 4) - $7,995 per year

Value for Money
4,7/5
Based on 33 user ratings
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Asterisk Features

Asterisk Features

API
Activity Dashboard
Automatic Notifications
Call Monitoring
Call Recording
Call Routing
Call Transfer
Caller ID
Chat
Collaboration Tools
Communication Management
Conferencing
Contact Management
Customizable Branding
Instant Messaging
Real Time Reporting
Reporting & Statistics
Third Party Integration
Video Conferencing
Voice Mail
Features
4,6/5
Based on 33 user ratings
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Categories

Additional information for Asterisk

Additional information for Asterisk

Key features of Asterisk

  • API
  • Authentication support
  • Call detail records
  • Call monitoring
  • Call recording
  • Call routing
  • Call transfer
  • Caller ID
  • Communication management
  • Computer telephony
  • Database integration
  • Database store/retrieve
  • Distributed universal number discovery
  • Macros
  • Route by CallerID
  • SMS messaging
  • Text to speech conversion
  • Voice mail

Benefits

● Asterisk is an open source framework for building communication applications and consists of hundreds of pre-built components that can be combined together to form solutions such as VoIP gateways, conference bridges, phones systems and voicemail servers.

● The tool offers features such as call recording, call forwarding, call routing, blacklists, call queuing, call waiting, caller ID, calling cards and blind transfer.

● The product can be used to build a complete phone system, to bridge gaps between systems or to extend or enhance an existing system.

● Asterisk is flexible and lets users define the solution that truly fits their requirements and is stable as well as reliable.

● The system supports both classical PBX functionality as well as advanced features that are associated with large, high-end proprietary PBXs and inter-operates both with traditional telephony systems and VoIP systems.

Asterisk FAQs

Asterisk FAQs

Below are some frequently asked questions for Asterisk.

Q. What type of pricing plans does Asterisk offer?

Asterisk offers the following pricing plans:

Starting from: US$595,00

Pricing model: Open Source

Free Trial: Available

Pricing for Asterisk Support Services: Single System (Level 1) – $595 per year Single System (Level 2) – $1,995 per year Multi-System (Level 3) – $3,995 per year Multi-System (Level 4) - $7,995 per year

Q. What are the main features of Asterisk?

Asterisk offers the following features:

  • API
  • Authentication support
  • Call detail records
  • Call monitoring
  • Call recording
  • Call routing
  • Call transfer
  • Caller ID
  • Communication management
  • Computer telephony
  • Database integration
  • Database store/retrieve
  • Distributed universal number discovery
  • Macros
  • Route by CallerID
  • SMS messaging
  • Text to speech conversion
  • Voice mail

Q. Who are the typical users of Asterisk?

Asterisk has the following typical customers:

Small Business, Large Enterprises, Public Administrations, Mid Size Business

Q. What languages does Asterisk support?

Asterisk supports the following languages:

English

Q. What type of pricing plans does Asterisk offer?

Asterisk has the following pricing plans:

Open Source

Q. Does Asterisk support mobile devices?

Asterisk supports the following devices:

iPad

Q. What other apps does Asterisk integrate with?

Asterisk integrates with the following applications:

Apptivo, Atmos, AuguTech, Creatio CRM, Oreka TR, SysAid, Tenfold, Vtiger CRM, Wakeupsales, amoCRM

Q. What level of support does Asterisk offer?

Asterisk offers the following support options:

FAQs, Forum, Knowledge Base, Online Support, Phone Support, Video Tutorials