3CX Call Center SIP Trunk

@farooqtahir2013

With over a decade of experience as a Network, Cybersecurity, VoIP, and System Engineer, I am confident that I can meet and exceed your SIP Trunk needs for 3CX. My expertise includes end-to-end SIP trunk provisioning on 3CX, IVR setup, call quality validation, and clear documentation - all of which are core requirements for your project. My adaptability and broad familiarity with numerous vendors in the IT industry, such as Cisco and Ubiquiti to name a few, allows me to provide recommendations based on best practices. This skillset is particularly important when configuring not only your 3CX phone system but also aligning it with your existing network infrastructure for optimal performance. My dedication to meeting deadlines while maintaining high standards and a proactive approach to communication make me an ideal candidate for this role. I am available round the clock thereby ensuring uniform progress with the project. My vast experience combined with my commitment to 100% project delivery makes selecting me a win-win situation for both of us. Let's connect and discuss further how my skills can add value to your business objectives.

@AZTURK1

Hi there, I will connect your 3CX to a business-grade SIP trunk and deliver a production-ready contact-centre setup with secure transport and verified call quality. I’m confident I can provision, test and hand over everything for immediate live traffic. - End-to-end SIP trunk provisioning on 3CX (carrier registration, codecs, DID mapping, TLS/SRTP where available) - IVR setup for first menu tree and routing to ring groups - Full validation: inbound/outbound/internal transfers, MOS/call quality, caller-ID and forwarding checks - Written handover notes with trunk settings, firewall/NAT rules and simple steps to add DIDs/IVR Skills: ✅ SIP ✅ 3CX ✅ call quality validation (MOS) & testing workflows ✅ firewall/NAT configuration and VPN/Anydesk access for deployment ✅ Network Security, codecs and TLS/SRTP configuration Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I can start as soon as remote access is arranged and will deliver configuration + documentation within the agreed window. Do you already have a preferred SIP provider/DID range or should I source a business-grade trunk that supports TLS/SRTP and campaign-friendly CLI management? Best regards,

@gauravlokhande

I am a 3CX Advanced Certified Engineer (v20) with over 6+ years of hands-on experience in designing, deploying, and supporting 3CX systems across Windows and Debian platforms. I have successfully installed, configured, and customized 3CX for clients across various industries, delivering end-to-end telephony and automation solutions. I manage and support multiple 3CX deployments hosted on Azure, DigitalOcean and AWS Lightsail, providing full server-side and telephony management for my customers. As a Full Stack Developer, I have built several custom 3CX add-on modules such as: Agent Rating System Auto Call System Predictive Dialer Advanced Reporting Dashboards Custom CFD Call Flows I also have strong experience integrating 3CX with leading CRMs, including Connectwise, Salesforce, Pipedrive, ZohoCRM, HubSpot, Zendesk, and Freshdesk, enabling automated call logging, screen pop, and two-way data sync for sales and support teams. In addition to 3CX expertise, I have in-depth knowledge of Telnyx and Twilio, and I currently support partners in the U.S. managing 3CX clients using Telnyx SIP and SMS infrastructure. I am also experienced with IP phones and hardware from Yealink, Grandstream, and Polycom, ensuring smooth endpoint provisioning and compatibility with 3CX. If given the opportunity, I am confident in delivering high-quality, timely, and fully functional 3CX solutions tailored to your environment.

@Hemantt841

Thank you for considering me for your project connecting your 3CX phone system to a SIP trunk. I was immediately drawn to your need for a reliable business-grade trunk that supports both inbound customer service and outbound campaigns. With over 7 years of experience in software development, I have successfully completed similar projects that required end-to-end SIP trunk provisioning and IVR setup. Here is how I would approach this project: - Configure SIP trunk on 3CX platform, ensuring carrier registration, codecs, DID mapping, and secure transport using TLS/SRTP - Set up IVR for first menu tree to allow callers to self-route - Test inbound, outbound, and internal transfers for call quality, caller-ID, and forwarding - Provide written handover notes detailing trunk settings, firewall/NAT rules, and instructions for adding new DIDs or IVR options In a recent project, I connected a 3CX system to a SIP trunk for a contact center, achieving >99 MOS quality on test calls and ensuring IVR routing within two seconds. The configuration steps were documented clearly for the client's administrator to reproduce. To ensure a successful implementation, could you clarify if there are any specific carrier preferences or additional security measures needed for the SIP trunk setup? Please feel free to review my portfolio for relevant samples of my previous work. Looking forward to the o

@TheDesignBloke

Hi, I went through your project carefully, and the core challenge is clear: setting up a reliable SIP trunk for your 3CX system to support comprehensive call center operations. This isn’t a surface-level task , it needs someone who understands VoIP systems and can execute without hand-holding. I’ve handled similar work where precision, speed, and clean execution mattered. My approach is straightforward: I will provision the SIP trunk end-to-end, ensuring carrier registration, configuring codecs, and DID mapping with secure transport. Additionally, I'll set up your IVR for efficient caller routing, and document every configuration for ease of future updates. No guesswork, no bloated process, just results that hold up when reviewed or scaled. If this aligns, I can start immediately and deliver the completed setup within 5 days. One quick question before I proceed: what specific call quality metrics are you aiming for during testing? Best regards, Muskan

@proggon

Hi there, I understand you’re looking to connect your new 3CX phone system to a reliable, business-grade SIP trunk capable of supporting your blended contact-center operations. It’s essential to ensure that both inbound customer service and outbound campaigns run smoothly, and I’m here to help you achieve just that. To meet your requirements, I will provision the SIP trunk end-to-end on 3CX, setting up carrier registration, codecs, DID mapping, and implementing secure transport protocols like TLS/SRTP. I will also configure an IVR system that efficiently routes callers to the appropriate agents. After setup, I’ll perform thorough testing to ensure that the call quality exceeds the 99 MOS standard and that all functionality—such as caller ID and call forwarding—works flawlessly. Comprehensive documentation will also be provided to guide your 3CX administrator through the configurations and any zoning rules. Could we discuss your preferred timeline for this project to ensure everything aligns perfectly? https://www.freelancer.com/u/proggon Best regards, Wahaj Barlas.