You will get a basic, secure Asterisk 18 with FreePBX 15 installation
Top Rated

Project details
For the standard service, we will set up a secured basic Asterisk with a FreepBX server. And configure 2 phones, so you can make internal calls.
With the medium package, we will set up your SIP trunk and incoming phone numbers, as well up 10 phone extensions. So you will be able to make internal and external calls.
With the largest package, we will help you configure IVR (basic auto attended), ring groups, voicemail (with voicemail to email). Any additional work would be charge with 30 USD/hour (of course we will agree on the scope first)
With the medium package, we will set up your SIP trunk and incoming phone numbers, as well up 10 phone extensions. So you will be able to make internal and external calls.
With the largest package, we will help you configure IVR (basic auto attended), ring groups, voicemail (with voicemail to email). Any additional work would be charge with 30 USD/hour (of course we will agree on the scope first)
Project Type
Development, ITWhat's included
| Service Tiers |
Starter
$150
|
Standard
$200
|
Advanced
$300
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 3 days |
Number of Revisions | 0 | 0 | 0 |
46 reviews
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YB
Yamen B.
Dec 14, 2025
Telephony Developer - Asterisk & FreeSwitch Expert Needed
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Miki B.
Jul 3, 2025
Asterisk Call Diversion Handling System
Daniel was very professional and did the work quickly. He was happy to help and explain all the details.
SO
Sascha O.
Jun 3, 2025
Control Dect devices with FreePBX and create a persist voice chat / conference
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Rob E.
Jul 19, 2024
ASTERISK AMI API (Dialer)
Flexible, knowledgeable, easy to work with.
DK
David K.
Jul 17, 2024
Configure Asterisk PBX to enable Twilio TwinML like features - see posting
Daniel knows what he is talking about. I rarely had a project that went so smooth on Upwork.
About Daniel
Senior Software Engineer. VOIP (Twilio/Asterisk), Full Stack Backend
100%
Job Success
Bern, Switzerland - 8:57 pm local time
I'm Daniel Krahenbuhl. Originally from Switzerland and living in Gdańsk Poland for the last couple of years.
I can communicate in English, german and french (if needed :-)).
I do enjoy working as a freelance software engineer and sometimes project manager (if the project is interesting).
It would be awesome to connect with you and hear what cool projects you have in mind.
Let's do it and happy days always.
My general work experience:
I design and write Software over the last 30 years
Node.JS backend development
Build API’s / Integrate third party API’s
Experience in MySQL/MariaDB, MongoDB
Voice/Video/Asterisk:
I work with Asterisk since its; s beginnings (25 years ago) Especially if you build large, scalable services. | designed some of the largest and most complex Asterisk system globally. During the years i also gained a lot of in-dept knowledge of Twilio, Pipedrive and Hubspot.
Third party API Integrations
I have a lot experience in integrating and using following API's
Hubspot, Pipedrive, Insightly, Sendgrid, MailChimp, and many more
Monday.com
Over 7 years of expertise in transforming businesses through cutting-edge process optimization and seamless integrations. With 30 years of programming experience and a background in business consulting, I possess a unique set of skills to elevate your organization to new heights.
At the core of my services lies Monday.com, a powerful platform that has revolutionized how businesses manage their workflows and projects. As a seasoned Monday.com specialist, I am adept at tailoring this robust tool to suit your specific needs, streamlining your processes, and enhancing collaboration across your entire team.
Steps for completing your project
After purchasing the project, send requirements so Daniel can start the project.
Delivery time starts when Daniel receives requirements from you.
Daniel works on your project following the steps below.
Revisions may occur after the delivery date.
Initial Discussion
I propose we have an initial discussion on your specific requirements and agree on what is included in the fixed price and whatnot.
Pay for the chosen package
Pay for the chosen package. If needed and agreed start an hourly contract as well.
