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Project Title: Full Issabel 5 PBX Deployment: Installation, Trunks & Extensions Project Overview I am seeking a VoIP specialist to perform a complete installation of Issabel 5 on an AlmaLinux 8 cloud instance. Beyond the base installation, the freelancer will configure the initial telephony architecture, including SIP trunks for external connectivity and internal extensions for users. Detailed Scope of Work 1. Server Installation & Hardening Perform a clean installation of Issabel 5 on AlmaLinux 8 using the official net-install script. Configure Fail2ban and firewall rules to block unauthorized SIP and SSH attempts. Set secure passwords for the Linux root, MariaDB, and Issabel web admin. 2. SIP Trunk Configuration Connect the PBX to my chosen VoIP provider using a SIP trunk. Configure PEER details (host, username, secret) and registration strings. Set up Inbound Routes to direct incoming DID numbers to the correct destination (e.g., an IVR or extension). Set up Outbound Routes with appropriate dial patterns (e.g., X. or 1NXXNXXXXXX) to enable external calling. 3. Extension & Endpoint Setup Create and configure a specified number of SIP/PJSIP extensions. Provide a secure "Secret" (password) for each extension. Enable basic features for each extension as needed (Voicemail, Call Waiting, Recording). [login to view URL] [login to view URL] 4. Testing & Handover Verify two-way audio for both internal (extension-to-extension) and external calls. Deliver a "System Access Sheet" containing all IPs, admin logins, and extension credentials. Freelancer Requirements Expertise in Asterisk/Issabel/FreePBX configuration. Prior experience setting up SIP Trunks (e.g., Twilio, Telnyx, [login to view URL]). Solid understanding of NAT traversal and firewall management for cloud-hosted VoIP. Deliverables A fully functional Issabel PBX on AlmaLinux 8. Configured and tested SIP Trunk for inbound/outbound calls. Set of active extensions ready for softphone or desk phone registration. Documentation of all credentials and security settings.
Project ID: 40282241
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Active 8 days ago
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11 freelancers are bidding on average $46 USD for this job

With a decade's worth of professional experience and a solid background in Network, Cybersecurity, VoIP, and System Engineering, I believe I am the ideal fit for your Issabel VoIP project. I have a profound understanding of Asterisk/Issabel/FreePBX configuration and have previously executed the kind of SIP Trunk setups you require, like Twilio, Telnyx, VoIP.ms. Moreover, my knowledge in NAT traversal and firewall management for cloud-based VoIP systems is strong; essential skills needed to deliver on your AlmaLinux 8 cloud instance requirement while ensuring ultimate security. One key aspect that sets me apart is that I design and recommend based on best practices. This means you can be assured that your PBX deployment will adhere to all relevant information. In conclusion, when you select me as your freelancer for this project you are not just getting someone who can complete the installation tasks required but also,e who can identify problem areas even before they happen. You will receive a fully functional Issabel PBX on AlmaLinux 8 that exceeds your expectations and is completely secured. Working together would grant you access to around-the-clock support, quick response times and a dedication to uncompromising quality. Let's make your VoIP infrastructure the best it can be together!
$120 USD in 3 days
7.2
7.2

I've deployed multiple Issabel 5 PBX systems on AlmaLinux 8 cloud instances and can handle your entire scope — from the net-install script through to verified two-way audio on both internal and external calls. My approach starts with a hardened base: Fail2ban jails tuned specifically for SIP brute-force patterns, iptables rules restricting SIP/RTP to your provider's IP ranges, and strong credential rotation across root, MariaDB, and the web admin panel. From there, I'll configure your SIP trunk with proper PEER authentication and registration strings, build out inbound routes mapping your DIDs to IVRs or extensions, and set up outbound dial patterns matching your region's numbering plan. Each PJSIP extension will be provisioned with unique strong secrets and configured with voicemail, call waiting, and recording as needed. I'm available to start immediately and will deliver a full handover document covering credentials, architecture, and testing results.
$10 USD in 1 day
5.2
5.2

Hi there, I see you're looking for a VoIP specialist to handle the installation and configuration of Issabel 5 on AlmaLinux 8, along with setting up SIP trunks and extensions. With 4+ years of experience in Asterisk and Issabel, I can ensure a smooth deployment tailored to your needs. My approach would start with a clean installation, followed by implementing security measures like Fail2ban and firewall rules. I’d then connect the PBX to your chosen VoIP provider and set up the necessary inbound and outbound routes. Configuring the extensions with secure passwords and essential features will be my next priority, followed by thorough testing to guarantee everything works perfectly. Could you share which VoIP provider you plan to use for the SIP trunk? Best regards, Arslan Shahid
$10 USD in 1 day
4.4
4.4

Hi there! Im Diego i bring on the Table more than 20 years experience hands on working with VoIP Open Source envoirements. This is a hand made response no AI no automatic N8N servers trully Human made response. If you need more details please fell free to reach me out over chat. Warm Regards Diego
$120 USD in 2 days
3.3
3.3

Hi, I can help you set up Issabel 5 on AlmaLinux 8 and configure everything needed for your PBX system. I have experience with Asterisk, VoIP, SIP trunks, and cloud servers. I will: • Install and secure Issabel 5 • Configure the SIP trunk with your VoIP provider • Set up inbound and outbound calling routes • Create SIP/PJSIP extensions with passwords and basic features • Test internal and external calls to make sure everything works At the end, I’ll provide a fully working PBX system and a document with all access details and credentials. Happy to help with this setup. Looking forward to working with you.
$10 USD in 2 days
0.0
0.0

I am a VoIP & Linux systems engineer with hands-on experience in Issabel/Asterisk PBX deployments. I can fully install and configure Issabel 5 on AlmaLinux 8, including: Server setup & security: Clean installation, secure root/MariaDB/admin passwords, firewall & Fail2ban for SIP/SSH protection. SIP Trunk configuration: Link to your VoIP provider, configure inbound/outbound routes, DID routing. Extensions setup: Create SIP/PJSIP extensions with voicemail, call waiting, and secure credentials. Testing & documentation: Ensure internal & external call quality, deliver all credentials and system configuration documentation. I can complete this efficiently, delivering a fully working PBX ready for production. Looking forward to collaborating!
$15 USD in 3 days
0.0
0.0

Bata, Equatorial Guinea
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