Hire the Best OpenSIPS Specialists
in India

Hi Guest, First of all, thanks for visiting our profile. I am doing freelancing since 2010 and my expertise on complete VoIP solution including Freeswitch, Asterisk, PJSip, Opensips and Kamailio. I just recently launched a company which is not offering only VoIP solution but Zeus in Web Development(PHP, WordPress etc), Mobile App Development(Android & iOS). We are a team of members having extensive knowledge of all the services we are offering. We have successfully completed many projects delivered competent results with 100% accuracy with lifetime free support. To keep in mind 100% availability, Our dedicated manager is always online to make sure our client will face no more difficult to ask any query at any time. Let me mentioned the technologies which are our core strength listed below: - Development of Linphone Mobile VoIP Diallers - Development of PJSIP Mobile VoIP Diallers - Installation, development, customization, and maintenance of Asterisk,FreeSwitch Switch,Kamalio and OpenSIPs Servers - Android app development - iOS app development - Flutter Cross Platform App Development - Electron App Development - Web application development - ReactJS and ReactNative development for web and mobile applications - Testing and bug fixing for existing applications Consulting for ongoing projects Project consulting for Android, iOS, ReactJS, Asterisk, FreeSwitch, OpenSIPs, Kamailio, ASTPP, RTPengine, MediaProxy, RTPproxy, FreePBX, and A2Billing Expertise in developing Flutter WebRTC applications Expertise in developing ReactNative WebRTC applications Our price is very reasonable which allows us to work with us. Please share your requirement today only with us to check our capabilities to take your experience on the next level. To name a few tools & technologies that I have worked on: • High-level languages: C++, Objective C, Java, Python, PHP • IDEs: Xcode, Android Studio, Eclipse • Version Control & CI: SVN, Git, Perforce, Bitbucket, Jenkins • DBMS: MS SQL, MySQL, Oracle, PostgreSQL, MongoDB • Frameworks: Django, Zend, Magento, Django REST • Management tools: VersionOne, Jira, Trac, MS Project, MS Visio, XMind, Bugzilla, Balsamiq • Amazon Web Services (AWS) - EC2, S3, SQS, SNS, RDS, CloudTrail, Cloudfront

With 10+ years in network infrastructure and security, I help businesses resolve the issues that stop daily operations: failed VPNs, blocked firewall traffic, unstable branches, cloud connectivity and VoIP/SIP problems. My focus is simple: find the actual root cause, restore services with minimum disruption, and avoid risky trial-and-error changes on a live network. I have supported enterprise, government, data centre and multi-site business networks using Fortinet, Cisco and other leading firewall platforms, with hybrid connectivity across AWS, Microsoft Azure and Google Cloud. My "Zero-Risk" Methodology Many engineers rely on "guess and check" troubleshooting. I don't. I never make blind changes on a live production network. Before altering your setup, I map your current design, analyze your routing, and review firewall policies. I always pull backups, engineer a rollback plan, and execute controlled, fully documented changes. My goal is permanent stability, not temporary patches. Core Expertise & Outcomes Delivered: Firewall & Threat Management: FortiGate, Cisco, UniFi, and MikroTik. (Comprehensive policy audits, legacy rule cleanup, and strict hardening). Complex VPN Troubleshooting: Site-to-Site, Remote-Access, IPsec, and SSL VPNs. If your tunnel is unstable or failing, I will stabilize it. Cloud & Hybrid Infrastructure: AWS (VPC, Security Groups), Microsoft Azure (VNet, VPN Gateway, NSG), and Google Cloud. I build secure, seamless office-to-cloud and cloud-to-cloud bridges. VoIP/SIP Optimization: Resolving SIP registration failures, NAT traversal bugs, one-way audio, and call drops using precise QoS, Voice VLANs, and Cisco CUBE support. Advanced Routing & Switching: SD-WAN deployments, dual-ISP failover, VLANs, and comprehensive LAN/WAN/Wi-Fi troubleshooting. How We Can Partner: Emergency Troubleshooting: Rapid isolation and resolution of critical connectivity, routing, or security failures affecting your users. Network Health & Security Audits: Deep-dive reviews to identify vulnerabilities, clean up messy configurations, and provide actionable security roadmaps. Infrastructure Setups & Migrations: End-to-end planning for new branch offices, secure remote work environments, and physical security networks (CCTV/Biometrics). Retained Network Support: Dependable, on-demand escalation support for internal IT teams, MSPs, software companies, and business owners. My core technical experience includes: • FortiGate configuration, migration and troubleshooting • Cisco routers, switches, Firewall, Firepower, Voice Gateway and CUBE • Fortigate, Fortinet, Mikrotik, • IPsec, SSL and remote-access VPNs • Site-to-site VPN and multi-site connectivity • SD-WAN, dual-ISP failover and policy-based routing • VLANs, routing, NAT, DHCP, DNS and LAN/WAN troubleshooting • Firewall policy review, cleanup and security hardening • Wi-Fi, office connectivity and branch network support • AWS VPC, routing, security groups, VPN and hybrid access • Azure VNet, NSG, VPN Gateway, peering and hybrid connectivity • Google Cloud VPC, firewall rules, VPN and network access • SIP, NAT traversal, RTP, one-way audio and call-drop issues • Voice VLANs, QoS and firewall policies for voice traffic • Network diagrams, documentation and handover notes Where access permits, I take a backup, confirm the rollback plan, make controlled changes, test the traffic flow and document the result. This is especially important on production firewalls, remote branches, VPN tunnels and voice networks, where one quick change can affect another service. Let’s Secure Your Network Whether you need a one-time emergency fix, a comprehensive security audit, or ongoing support, I am here to help. Please share: Your primary firewall/hardware vendor and model. The exact issue or project scope (and any recent changes made). The number of sites or users affected. Once I understand your exact setup and the business impact, I will provide a clear, safe plan of action to get your network running flawlessly.

I am VoIP/VICIDIAL/VICIBOX/Asterisk/FreePBX/GoAutodial/vTiger/3CX developer and solution provider with past 16+ years of rich experience. I have expertise in them, and so i am confident to serve you for the same. I have rich telecom, web and custom software development and support experience. I'm interested in your job & I guarantee doing it in short time. I didn’t ask for an upfront as I'm interested in building long term relationships based on trust because I'm confident with my quality of work.

FreeSWITCH, Asterisk, FusionPBX, VoIP, Contact Center (CCaaS), AI Automation & Voice Agent Architect with 20+ years of engineering experience and 90+ successful Upwork projects. I help telecom providers, startups, BPOs, answering services, and service businesses build production-ready communication platforms, AI voice systems, and workflow automations that reduce manual work, improve customer handling, and scale reliably. My core work spans FreeSWITCH, Asterisk, FusionPBX, SIP, WebRTC, Contact Center platforms, multi-tenant PBX, AI Voice Agents, and business process automation. Whether you need a hosted PBX, a custom CCaaS platform, AI-powered call handling, or workflow automation across CRM, support, and operations, I can design, build, integrate, and scale the complete solution. Contact Center (CCaaS), PBX & VoIP Platform Development I build complete telecom and customer communication platforms for telecom providers, contact centers, answering services, and enterprise teams. Services include: • Custom Contact Center (CCaaS) platforms • Hosted PBX, UCaaS, and Multi-Tenant PBX systems • Agent dashboards, supervisor panels, wallboards, and reporting • Skill-based routing, IVR, call flow automation, and queue management • Predictive, progressive, and power dialers • Call recording, monitoring, whisper, barge, and analytics • CRM integrations, click-to-call, callback workflows, and usage reporting • DID provisioning, SIP trunk integrations, and carrier connectivity • White-label telecom platforms for providers and resellers FreeSWITCH, Asterisk & FusionPBX Development Telephony is my core specialization—not just PBX setup, but full product and platform development. I work on: • FreeSWITCH ESL development, custom dialplans, and call routing logic • Asterisk AGI, AMI, and ARI integrations • FusionPBX and FreePBX customization • VICIdial and outbound campaign platform customization • Multi-tenant PBX architecture and provisioning flows • SIP trunking, DID routing, RTP troubleshooting, and WebRTC softphones • Performance optimization, high-availability design, and production deployment AI Voice Agents, AI Integration & Workflow Automation I help businesses use AI where it creates measurable operational value—not just demos or isolated bots. I design and implement: • AI Voice Agents, AI receptionists, AI IVR, and intelligent call routing • OpenAI, Claude, Gemini, and real-time voice integrations • Voice AI workflows for customer service, after-hours call handling, lead qualification, and phone automation • CRM automation, email automation, reporting workflows, and internal process automation • AI assistants for support teams, operations teams, and internal knowledge workflows • API-based workflow automation across multiple systems and business tools Tools and platforms I work with include OpenAI, Claude, Gemini, LiveKit, ElevenLabs, Deepgram, REST APIs, webhooks, and custom backend integrations. Where needed, I can also help evaluate the right automation stack and connect AI capabilities into your existing business systems. Technology Stack Telephony: FreeSWITCH, Asterisk, FusionPBX, FreePBX, VICIdial, SIP, RTP, WebRTC, SIP.js, Twilio, Telnyx, LiveKit Backend: Node.js, NestJS, Python (FastAPI), Laravel, PostgreSQL, MongoDB, Redis, REST APIs, WebSockets Infrastructure: Linux, Docker, Kubernetes, Nginx, AWS, Azure, GCP, Prometheus, Grafana, CI/CD AI Generated Code, Debugging and Deployment: Experienced with OpenAI Codex Agent , Claude Code , Cursor IDE, Replit, Lovable Recent Project Types • Multi-tenant CCaaS platforms with real-time dashboards and analytics • AI Voice Agents integrated with FreeSWITCH using OpenAI Realtime API • FusionPBX deployments and customizations for hosted PBX providers • VICIdial implementations with CRM integration and outbound campaign workflows • Telecom ERP systems with CDR billing, DID provisioning, and reseller management • Answering service platforms with AI-assisted routing and live-agent fallback • Custom workflow automation and AI integration for communication-heavy operations Why Clients Hire Me ✔ 20+ years building telecom, VoIP, and communication software ✔ 90+ successful Upwork contracts ✔ Deep expertise in FreeSWITCH, Asterisk, FusionPBX, SIP, and Contact Center systems ✔ Ability to combine telecom engineering, backend development, and AI automation in one solution ✔ Production-ready architecture with realistic scoping and long-term support ✔ Clear communication, practical implementation, and business-focused problem solving If you need a consultant or hands-on developer for FreeSWITCH, Asterisk, FusionPBX, Contact Center platforms, AI Voice Agents, VoIP systems, or AI workflow automation, I can help you build a reliable solution that supports real business operations—not just prototypes.

With 16+ years of experience, I help businesses build scalable, secure, and high-performance communication platforms. I specialize in end-to-end VoIP development, WebRTC applications, and AI-powered voice automation. Core Expertise: VoIP Development (Asterisk, FreeSWITCH, Kamailio, OpenSIPS) WebRTC Apps (Audio/Video Calling, Live Streaming) SIP, RTP, IVR, Call Routing & Softswitch (Class 4/5) AI Voice Bots & AI Receptionist Solutions UCaaS, CPaaS & API Integration (Twilio, Plivo, etc.) Media Streaming & Low-Latency Systems Scalable Server Architecture (AWS, Docker, Kubernetes) CRM/ERP & Third-party Integrations WebRTC Application Development - Audio & Video Conferencing - WebRTC, Jitsi, Twillio, OpenTok, Kurento - Screen Sharing, Recording - Online Tutoring and E Learning - Telemedicine and Health Applications - Video Broadcasting and Live Streaming - SFU, STUN & Multiple Server architectures VoIP Service: - Asterisk/Freeswitch/OpenSIP/Kamilio setup & Configurations - PBX System & Software Development - Unified Communication Software - CallCenter Softwares - DID Management - Auto/Predictive Dialer - Mobile or Sip or VoIP Dialers - Real Time billing software - Distributed Server Architecture - Load Balancing and failover setup - Server Administration, Maintenance & 24*7 Support AI-Integration and Automation - Smart voice agents (inbound & outbound calls) - AI chatbots for web, WhatsApp & apps - Speech-to-text & text-to-speech integration - Multilingual conversational systems - Call automation (sales, support, reminders) - AI receptionist and appointment setter - AI content generation (text, image, audio) - Knowledge base chatbots - AI copilots for internal teams - Integrated LLMs for context-aware, deterministic voice interactions Technology, Platforms and languages expertise: Frontend Web: Angular, React.js, Vue.js, PHP Backend: Java, PHP, Laravel, Node.js, Python WebRTC: Native, Kurento, Tokbox, Jitsi, janus, OpenVidu VoIP: Freeswitch, Asterisk, Twillio, Kamilio, OpenSIP, FusionPBX, FreePBX, SIPJs AI/ML: OpenAI, Whisper, ElevenLabs, n8n, Retell

With over 17 years of experience in supporting Netsapiens Voip platforms, I bring a deep understanding of troubleshooting Voip SIP call flows and Netsapiens dial plan issues. I am skilled in creating and adding new Dial Translations as required. My expertise extends to the migration of different Voip platforms such as FreePbx, 3cx etc to Netsapiens Voip Solutions and Carrier integrations and testing with Netsapiens. I am proficient in configuring overrides for Yealink and Grandstream phones and adept at troubleshooting end-user devices from these brands. I am capable of handling MACD (Moves, Adds, Changes, Deletes) processes for onboarding and possess expertise in VoipMonitor QOS, WireShark and TcpDump. Core Skills: VoIP Technologies: Netsapiens, FreeSWITCH, Kamailio, OpenSIPS, FusionPBX, Asterisk, 3CX, FreePBX, Elastix, Yealink,Grandstream Protocols: SIP, RTP, SDP, WebRTC Database Management:Mariadb,PostgreSQL, MySQL Cloud Platforms:Azure,AWS, GCP, DigitalOcean System Administration: Linux (CentOS, Ubuntu), Docker, VMware, Hyper-V Tools: Wireshark, tcpdump, sipp,Zabbix Technical Excellence: Deep understanding of VoIP protocols and systems ensures top-notch performance and reliability. Proven Results: Successfully delivered projects for diverse clients, enhancing their communication infrastructures. Client-Centric: Dedicated to providing tailored solutions that meet unique client needs, ensuring satisfaction and long-term collaboration Looking for a VoIP expert to elevate your communication systems? Let's discuss how I can help you achieve your goals. Contact me today!