Yusuf A.
Istanbul, Turkey
100%
Job Success
Top Rated
VoIP Expert on Asterisk,Freepbx, 3CX with TTS, SR and AI experience
$45.00/hr
I have over 20 years of experience related to data networks and telecommunication systems. I'm providing installation, troubleshooting, integration, and consultancy on Asterisk-based systems (Freepbx, Vicidial, etc.) and 3CX. I can deliver any project (IVR, Dialer, PBX, etc.) related to VoIP and networking using Linux OS. I'm experienced with both programming and Linux administration. I'm also working with AI applications (OpenAI, Google) on telecommunication systems. You can find detailed information about me below.
My specialties are VoIP, IP Telephony, IVR, Call Center, Linux systems, and Web programming. I'm experienced in different flavors of Linux systems, Asterisk and Asterisk-based PBX software (Elastix, FreePBX), 3CX, opensips/kamailio, Kazoo, and Vicidial.
I've developed applications based on Asterisk and integrated Asterisk with various software like Zoho, Vtiger, MS Dynamics, Salesforce, and in-house CRM applications using REST or SOAP web services. I've also used Google cloud, AWS, Google, Azure , Twilio, and Plivo to embed speech-to-text, text-to-speech, and other features.
Work history
Work history
3cx troubleshooting
Oct 30, 2024
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Jan 16, 2025
Private earnings
Connecting Five9 SIP to Asterisk SIP Server
Apr 14, 2024
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Sep 23, 2024
"Yusuf is extremely knowledgeable in SIP technologies and very responsive. Great communication as well. He was able to gather more information regarding the project and work with us to develop…
Freelancer's response
"It was my pleasure to work on this project. Looking forward to working with you again. Thanks for your comments. "
Private earnings
SnomPA1 setup on 3CX (scripting may be required)
Feb 21, 2022
-
Aug 23, 2024
Private earnings
Experienced 3CX v12 VoIP Engineer (Long-Term Support)
May 28, 2024
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Aug 20, 2024
No feedback given
Private earnings
3CX expert to update the system, do backup and create reports
May 15, 2024
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Jun 28, 2024
"thanks"
Private earnings
3CX support
Feb 1, 2023
-
May 27, 2024
Private earnings
Seeking developers experienced with LAMP (Python) and REST APIs for UX Research Study / gsfd-2024-1 - Upwork enterprise client
Mar 1, 2024
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Mar 10, 2024
"Yusuf did a great job on a LAMP REST API deployment to Google Cloud Platform. We'd be happy to work with this freelancer again."
Private earnings
Review specially call flow designer
Jan 29, 2024
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Mar 4, 2024
"excellent knowledge in 3cx and PBX system"
Private earnings
Review security features and add a special call flow to add a code to dial internationally
Oct 17, 2023
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Oct 19, 2023
"Excellent communication and vast knowledge of 3CX/VOIP Systems made this project easy to handle and promptly addressed!"
Private earnings
Design the 3CX platform
Aug 1, 2023
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Aug 21, 2023
"Would definitely recommend yusuf, he is an expert in his field, was able to do things that our local engineer said was impossible. thank you for the job well done"
Private earnings
Asterisk / FreePBX setup on a cloud based new server
Mar 13, 2025
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Present
Job in progress
Private earnings
FreePBX Extension Configuration Expert Needed
Feb 19, 2025
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Present
Job in progress
Private earnings
Connecting OpenVox SWG-2008 to 3CX Cloud
Dec 4, 2024
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Present
Job in progress
Private earnings
3cx crm integration
May 31, 2024
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Present
Job in progress
Private earnings
Vicidial Expert Needed for setting up Stereo/Dual Channel Recordings in vicidial.
May 27, 2024
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Present
Job in progress
Private earnings
Asterisk developer to migrate and upgrade an Asterisk server
Apr 30, 2024
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Present
Job in progress
Private earnings
3CX setup assistance
Feb 8, 2024
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Present
Job in progress
Private earnings
Need help with Opensips script modification
Feb 21, 2022
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Present
Job in progress
Private earnings
Asterisk, Perl, MySQL contractor programmer
Jan 10, 2022
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Present
Job in progress
Private earnings
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Skills
Skills
- Asterisk
- 3CX
- FreePBX
- VoIP
- Call Center Software
- IVR Software
- VoIP Software
- VoIP Administration
- API Integration
- AI Bot
- Twilio API
- Google APIs
- Python
- PHP
- Perl