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What Is Asterisk?

Cloud and on-premise solution that enables enterprises to manage business phones via tools such as PBX, SIP trucking and more.

Who Uses Asterisk?

Telephony solution that enables businesses to manage activities across public switched telephone network (PSTN), voice over Internet Protocol (VoIP) networks, and more.

Asterisk Software - 1

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Reviews of Asterisk

Average score

Overall
4.5
Ease of Use
3.5
Customer Service
3.4
Features
4.6
Value for Money
4.8

Reviews by company size (employees)

  • <50
  • 51-200
  • 201-1,000
  • >1,001

Find reviews by score

5
58%
4
33%
3
7%
2
2%
Adolfo
Adolfo
System Administrator in El Salvador
Verified LinkedIn User
Government Administration, 10,000+ Employees
Used the Software for: 2+ years
Reviewer Source

Alternatives Considered:

Asterisk as a telephony platform between branches of the institution and in applications

5.0 3 years ago

Comments: Our experience using Asterisk has been very good since it has allowed us to interconnect the institution's branches via VoIP and it has also been possible to scale without problems. In addition to integrating with applications towards the end user

Pros:

Asterisk is a flexible VoIP platform that allows interaction with telephone systems within the institution nationwide, also allows integration with specific business applications

Cons:

The implementation can be a bit complicated because the server cards and the services of the telephony provider have to be compatible.

Stefano
Administrator in Italy
Information Technology & Services, Self Employed
Used the Software for: 2+ years
Reviewer Source

Asterisk is the world wide best software at no cost PBX!

5.0 2 months ago New

Comments: I use Asterisk since 20 years and it is absolutely the best sofwtare at no cost.

Pros:

It ha no cost, it is open standard, fully customzable. AGI Scripts help to add features to asterisk and it is very easy to connect it to other softwares.

Cons:

I like everything of Asterisk. It is really the best.

Emil
Head of IT in Croatia
Financial Services, 11–50 Employees
Used the Software for: 1+ year
Reviewer Source

Good open source VOIP solution

3.0 7 years ago

Comments: 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.

Nathan
Network Infrastructure Manager in UK
Retail, 51–200 Employees
Used the Software for: 2+ years
Reviewer Source

Alternatives Considered:

Top Tier Phone System - Do Not Dismiss it!

5.0 8 months ago

Pros:

We use Asterisk in conjunction with FreePBX for our business phone solution, it's certainly no easy task to deploy or configure. The documentation available is vast however being an open source project you will run into a few issues dialling in your configuration to the best possible specification. Cost wise it's very cost effective and that's why I believe it's a top tier solution you should consider for any size of business. We have around 300 phones deployed with Asterisk / FreePBX and when comparing the costs against industry leading phone solutions we are saving tens of thousands of pounds per year. It's certainly not without it's faults but it's very feature rich and if you're willing to put in the hours and study you can develop your own applications or custom scripts to tailor the phone system to your businesses needs and whims.

Cons:

As mentioned the difficulty of deployment is quite high, not every IT engineer will have the skill set to just stand up this system it does take time and you will run into a few gremlins but certainly you'll not be doing yourself any justice by passing this up.

Tim
IT consultant in Canada
Information Technology & Services, 201–500 Employees
Used the Software for: 2+ years
Reviewer Source

Asterisk is the standard as a free and open-source PBX but use packaged distributions

5.0 9 months ago

Comments: This is my go-to choice for larger deployments but a packaged version with extras and IT support staff are both necessary for successful deployments. For small organizations without trained Asterisk IT support staff, a hosted solution is better.

Pros:

The product has a very long history (20+ years). I was using it back in the early 2000s writing my own AEL scripts to write call flows. However, while it is full featured, it has no built-in GUI, either for admins or users. Using a package like FreePBX is essential for business deployments.

Cons:

No administration tools, no user interface, lack of commonly needed extensions like phone handset management and voicemail.