Asterisk Reviews & Product Details

Build Voice, Video and Text Applications Easily With Asterisk, The World's Most Widely Adopted Open Source Communications Software Development Framework. Asterisk is an open source framework for developing state-of-the-art communications applications. Asterisk includes hundreds of pre-built components that handle the complex, low-level details of voice, video, and text communications. Developers use Asterisk to create custom communications solutions and to build innovative communications products. Discover how Asterisk can power your next-generation communications deployment.

Seller

Sangoma

Discussions

Asterisk Community

Languages Supported

English, French, Dutch, Portuguese, Russian, Spanish

Overview by

David Dutton (Director of Revenue Operations at Sangoma)

Pricing

Pricing provided by Asterisk.

Metered SIP Trunking

$0.02

per minute

Channelized SIP Trunking

$22.95

Channel of VoIP service

View More Pricing Information

Top-Rated Alternatives

Cisco Unified Communications Manager (CallManager)

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Asterisk Media

Hardware that works with Asterisk

G2 reviews are authentic and verified.

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Sathyanarayanan A.

CTO

Mid-Market (51-1000 emp.)

2/17/2026

"Rugged Dialer That Gels Seamlessly with Any CRM"

4.5/5

What do you like best about Asterisk?

A rugged Dialer tool which gels with any CRM Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

Agents will have to login into Asterisk dialer over and above logging into CRM. Review collected by and hosted on G2.com.

Jose S.

Sysadmin Mid

Information Technology and Services

Mid-Market (51-1000 emp.)

10/2/2025

"Pilar of Telephony"

5/5

What do you like best about Asterisk?

- Easy To integrate

- Foundation for every PBX Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

- Little complex

- Technical Knowledge needed to admin

- Limited Support Review collected by and hosted on G2.com.

Verified User in Computer Networking

Small-Business (50 or fewer emp.)

2/21/2025

"Asterisk; barrier-free telephony for total communications control"

4.5/5

What do you like best about Asterisk?

The level of customization of Asterisk is unmatched allowing us to adapt it to the specific needs of our telephony infrastructure; thanks to AGI scripts we extend its functionalities, automating processes and improving operational efficiency. It's remarkable its ability to manage multiple SIP Trunks and operate with more than one provider at a time which gives us stability to optimize costs by choosing the best route for each call. Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

Asterisk is a very flexible tool and offers absolute control over telephony but its initial configuration is almost a challenge because we have to manually define each parameter and that becomes a meticulous process of testing and tuning to find the optimal configuration. Review collected by and hosted on G2.com.

What problems is Asterisk solving and how is that benefiting you?

By using Asterisk we make sure that interactions with customers and students are recorded and centralized; it also allows us to achieve a hybrid configuration with fixed IP telephony equipment and virtual lines on portable devices so there is no problem with staff mobility as calls can be managed from any location. Review collected by and hosted on G2.com.

Kashif Ali S.

Senior System Administrator

Mid-Market (51-1000 emp.)

4/11/2023

"Highly customizable and flexible Asterisk for VoIP"

5/5

What do you like best about Asterisk?

Open-source and free to use, which can save on licensing cost Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

Can be complex to set up and configure, requiring some technical knowledge Review collected by and hosted on G2.com.

Verified User in Telecommunications

Mid-Market (51-1000 emp.)

9/7/2022

"Best SIP Friend"

4.5/5

What do you like best about Asterisk?

Easy to handle and debug at their CLI level Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

NA, everything is very smooth and working fine Review collected by and hosted on G2.com.

Verified User in Telecommunications

Small-Business (50 or fewer emp.)

11/2/2021

"Open Source Must Have"

4.5/5

What do you like best about Asterisk?

I love that we can use asterisk to replace high cost high-cost systems completely, and there is great support online for the various issues that you may run into. Asterisk is by far one of the best examples of community-supported systems. Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

Sometimes asterisk has issues that take a lot of technical expertise to fix, and sometimes those things can take a while to muddle through. Often it is better to only install security upgrades, instead of feature upgrades, to avoid breaking the system. Review collected by and hosted on G2.com.

Recommendations to others considering Asterisk:

Be sure to have an experienced asterisk expert help with the setup and have that person be on standby because when issues come up, they should be able to be dealt with quckly. Telephone problems are serious problems! Review collected by and hosted on G2.com.

What problems is Asterisk solving and how is that benefiting you?

Asterisk is a complete solution for telephony-related products. I have entirely revised many phone system issues with it, and it has texting support baked in with many installs. Review collected by and hosted on G2.com.

Shubham S.

system administrator

Small-Business (50 or fewer emp.)

10/19/2021

Business partner of the seller or seller's competitor, not included in G2 scores.

"Best calling software."

5/5

What do you like best about Asterisk?

VOIP feature is the best feature in asterisk. All over the world, every call is connected that only one software is used .one and only asterisk. Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

a configuration setting is very complicated in asterisk. I will give him only one suggestion please, provide more documentation of the asterisk configuration file and video. Review collected by and hosted on G2.com.

Verified User in Public Safety

Enterprise (> 1000 emp.)

4/8/2020

"Perfect experience with Asterisk VoIP"

4.5/5

What do you like best about Asterisk?

Performance and stability of linux server and asterisk voip system together Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

Maybe lack of collaboration tools like video conference Review collected by and hosted on G2.com.

Kimran V.

Core Administrator

Mid-Market (51-1000 emp.)

1/14/2021

"Asterisk Review"

5/5

What do you like best about Asterisk?

I love that it is open source.Flexibility and integration to me is key to any system I would consider adding to a business platform.We have been using asterisk for almost 14 years and have been able to shed many bills with it's usage. Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

My dislike is not for asterisk but those front ends who come in and try to commercialize the product . Review collected by and hosted on G2.com.

Rick C.

IT Manager

Small-Business (50 or fewer emp.)

11/2/2020

"Fantastic VOIP system!"

5/5

What do you like best about Asterisk?

Absolutely love all of the wonderful features of this system! You get a full and complete VOIP phone system to handle all of your business needs. Review collected by and hosted on G2.com.

What do you dislike about Asterisk?

Not really much to dislike about Asterisk, but I would say the update and support cycle could be improved. Review collected by and hosted on G2.com.