Hire the Best 3CX Freelancers
in Pakistan

Hello, Thanks for visiting my profile. This is Abid Ur Rehman, a certified Asterisk Developer DCAP, VoIP Consultant, VICIDial, FreePBX SCE, 3CX v18 and v20 Certified Advanced Engineer, Elastix ECE, GoAutoDial, The SIP School SSCA, PBXWare, A2Billing, FreeSWITCH, Twilio, FusionPBX, ASTPP, Network CCNA, Windows Servers MCSE, and Linux RHCE certified expert. I graduated with a BS in Telecommunication and an MSc in Telecommunication Networks. Having over 13 years of VoIP/Linux/IT/network planning, design, development, deployment, optimization, administration, and support experience in top-notch organizations such as Telappliant Ltd., Cybergen, SCB Global, Dialer360, and Astericom. Skills and Certification: IP PBX: 3CX, Asterisk, FreePBX, Elastix, PBXware MT, FreeSWITCH, FusionPBX, Issabel, VoIPOffice AI Agents/Integration: ElevenLabs, Vapi SMS Blast/Broadcast using SignalWire, VoIP.ms, Telnyx, Anveo, Bandwidth, Plivo, Skyetel, Twilio, VoxTelesys, BulkSolutions, Flowroute, Intelepeer, and BulkVS Telecom Billing: A2Billing, ASTPP, VOS3000, and Magnus Billing. Dialer: VoiceBroadcast, VICIDial, GoAutoDial, VICIBox Multi-Server Clustering, Dialer360, Primo Dialer IP Phones: Aastra, AND phone, Algo, AudioCodes, Cisco, Cisco/Linksys, CloudTC, Cortelco, CyberData, Digium, H-Tek, Incom, Intelbras, Konftel, Mocet, Norphonic, Obihai, Panasonic, Patton, Phoenix Audio, Polycom, Snom, Thomson, Unidata, Uniden, VTech, Xorcom, Yealink, Yealink/Dreamwave IP PBX (hardware): Sangoma PBXact UC / FreePBX, Elastix IP PBX, Grandstream UCM, Yeaster S-series, Renegadepbx-1U-Appliance-with-FreePBX, Patton's gateways VoIP Providers: USA and Canada: Astericom, Twilio, VoIPdotms, Switch2VOIP, SignalWire, Anveo, Alcazarnetwork, voxbeam, Telus, RingCentral, Call Centric, Voyant (Vitelity), Nextiva, bandwidth, Altotelecom, FlowRoute, QuestBlue, sipdotus, DIDLogic, Nexmo, Plivo, siptrunkdotcom, Telnyx, IDTExpress, Zadarna SMS and Bulk SMS: I can write code for you to send and receive SMS using any Asterisk and FreeSWITCH server and through popular providers like Telnyx, Twilio, Bandwidth, VoIPdotms, and SignalWire. For bulk SMS, I can set up a code with the front end for sending bulk SMS from a CSV . UK: Fuse 2, BT, VoIPTalk, DrayTEL, Telappliant, Gamma, sipgate, VoIPFone, VoiceFlex, Voicehost, Brightstar, Yellowgrid, Gradwell, T4com Ltd, Voxbeam, and Spitfire Linux Distros: CentOS, Redhat EL, Ubuntu, OpenSUSE, Debian, Back Track (Kali Linux) Windows machines: Windows Server 2012 and 2016, Windows Desktop 11, 10, 8, 7, and XP. Cloud Platforms: AWS EC2 and LightSail, GCP, Vultr, BlueHost, HostGear, Hetzner, and Digital Ocean Coding: PHP, MySQL, Lua, XML, JSON, HTML I would be very happy to assist start-ups as well as SMEs in achieving their goals and business objectives. Thank you!!

I am a VoIP and network security expert with over 7 years of hands-on experience delivering custom communication solutions for businesses worldwide. I specialize in deploying and supporting VoIP systems such as Avaya, Asterisk, 3CX, Mitel, FreePBX, FusionPBX and Kamailio, with deep expertise in SIP routing, SIP trunking, and cloud telephony. I’ve worked with major providers including Twilio, Voip.ms, Telnyx, and Voxtelesys, and offer reliable integration and troubleshooting services. I also have a strong background in VPNs, firewalls, and secure networking — including Fortinet, pfSense, OPNsense, WireGuard, OpenVPN, and IPSec setups — especially for remote access and restricted regions. Additionally, I offer AI Voice Assistant setup and integration with VoIP systems, as well as AI chatbots for websites and WhatsApp Business automation. My clients benefit from project-based deployment, long-term support, and a live lab environment where I demo solutions in real time before final delivery and deliver reliable, well-tested solutions designed around your business needs. Let’s work together to secure and optimize your communications systems.

FreePBX | Asterisk | 3CX | FusionPBX | Issabel PBX | Vital PBX | Bicom Systems | Zoom | GoTo Connect | RingCentral | Nextiva | Talkdesk | Cisco WebEx | 8x8 Communications | Twilio | Amazon | Yeastar | Magnus Billing | Vapi AI Agents | Retelai Agents | Livekit AI Agents | N8n ai automation | SMS compliance specialist | 10DLC | shortcode Multi-PBX Deployment Expertise: Proficient in deploying and managing systems like FreePBX, Asterisk, 3CX, FusionPBX, Issabel PBX, VitalPBX, and Bicom Systems to deliver scalable and reliable VoIP solutions for businesses. Unified Communications Solutions: Delivered enterprise-grade communication systems using platforms like Zoom, RingCentral, Nextiva, Talkdesk, Cisco WebEx, and 8x8 Communications, ensuring seamless collaboration and enhanced productivity. FreePBX Sangoma Connect App: Expertise in setting up the Sangoma Connect App for SMS and calling, delivering a seamless mobile communication experience fully integrated with FreePBX systems. Custom Module Development: Designed and deployed custom modules on FreePBX and FusionPBX to enhance features like call reporting, routing, and multi-tenant PBX capabilities. Expertise in migrations between on-premises systems (e.g., FreePBX, 3CX, Asterisk, FusionPBX, VitalPBX, Issabel PBX) and cloud-based systems (e.g., Zoom, RingCentral, Nextiva, Talkdesk, Cisco WebEx, 8x8 Communications). SIP Trunking Expertise: Extensive experience integrating and configuring SIP trunks from top providers, including Twilio, Bandwidth, Commio, Flowroute, DIDWW, DIDForSale, Nextiva, Skyetel, Telnyx, Sinch, SignalWire, and VoIP Innovations for optimal call quality and cost efficiency. High-Availability Deployments: Implemented clustered PBX solutions (FreePBX, Issabel, VitalPBX) for high availability and fault tolerance, minimizing operational downtime. Customized SIP Trunking Configurations: Configured secure and efficient SIP trunks integrated with platforms like Goto Connect and Nextiva. Customized and Scalable Call Center Solutions: Integrated platforms like GoTo Connect with predictive dialers, FreePBX and Custom CRM systems to get tone analysis and sentiment analysis. WebRTC and Browser-Based Communication: Implemented WebRTC solutions for voice, video, and chat across platforms such as FreePBX, FusionPBX, and Issabel PBX, enabling browser-based communication without plugins. Enhanced Security Configurations: Expertise in securing PBX systems with firewalls, fail2ban, and SIP encryption, ensuring robust protection against VoIP fraud and cyberattacks. especially BruteForce attacks. Microsoft Teams Integration: Configured direct routing between Microsoft Teams and PBX systems like Asterisk, FreePBX, and Kamailio sip server enabling unified PSTN calling solutions. Multi-Channel IVR Solutions: Developed complex IVR systems across platforms like FreePBX, Issabel, and FusionPBX, featuring dynamic menu options, queue prioritization, and time-based routing. Provisioning and Endpoint Management: Automated provisioning for devices like Polycom, Yealink, and Grandstream, Cisco 7800, 8800, 7900, SPA series using FreePBX’s EPM (Endpoint Manager), GotoConnect, Ring Central, Talkdesk, CiscoWebex Call Analytics and Reporting: Built dashboards on top of Asterisk based systems especially FreePBX to track KPIs such as Peak hours, Answered calls, Unanswered Calls, Call Analytics, Call Recordings, Role based Access system, Customer Call Survey Feedbacks etc. CRM Integration: Seamlessly connected PBX systems like 3CX and FreePBX with CRMs (e.g., Salesforce, Zoho, Odoo ERP, Sugar CRM) to enable click-to-call functionality and call logging for enhanced client interactions. Voicemail and Fax Solutions: Configured advanced voicemail-to-email and fax-over-IP (FoIP) solutions across platforms like FreePBX to meet diverse business needs. Legacy System Integration: Expertise in bridging legacy PBX systems with modern solutions, enabling cost-effective transitions and hybrid environments.

Top Rated IT Infrastructure & Security Engineer with 700+ hours on Upwork and a 100% Job Success Score. I keep phone systems, firewalls, and servers running for small businesses and MSPs — so your team stays connected, protected, and productive. What I do: ✔ IT Support & Helpdesk — remote troubleshooting, ticket handling (Tier 1–3), user onboarding/offboarding, printer and endpoint issues, and ongoing support contracts for businesses and MSPs ✔ 3CX VoIP — new deployments, V18→V20 migrations, SIP trunk configuration (Twilio, Broadvoice), IVR, queues, DID routing, integrations, and troubleshooting ✔ FortiGate firewalls — SSL-VPN setup for remote teams, firewall policies, split tunneling, secure remote access, and web filtering ✔ VMware virtualization — ESXi and vCenter administration, VM provisioning, migrations (P2V/V2V), performance troubleshooting, and host maintenance ✔ Backup & disaster recovery — Veeam configuration, backup health checks, and restore testing for VMware environments ✔ Infrastructure & Information Security — network segmentation (VLANs), firewall hardening, VPN security, access control, MFA rollout, patch management, and security best practices to protect your business data ✔ Microsoft 365 & Intune — tenant administration, Exchange Online, device enrollment, and MDM policies ✔ Networking — network design & deployments, troubleshooting, and network optimization ✔ Server administration — Windows Server, RHEL/Linux, Active Directory, and day-to-day IT support How I work: I follow ITIL-aligned practices — structured incident and change management, proper documentation, and root-cause fixes instead of quick patches. Fast response times, clear documentation after every job, and plain-English updates — no jargon, no disappearing mid-project. I've handled everything from single urgent fixes to long-term support contracts, and my clients keep coming back because things get done right the first time. Let's talk: Message me with your issue — I'll tell you honestly whether I can fix it, how long it will take, and what it will cost. No overselling, no surprises.

Network and Cloud Systems Administrator with 5+ years of experience in IT infrastructure. Proficient in: | Networking & Security | Linux & Windows Servers | Hypervisors | AWS& Azure | M365 |Storage Solution Here is a detailed breakdown of my technical expertise: Infrastructure & Networking Networking: I have extensive experience with L2/L3 Switches from vendors like Cisco and Huawei, as well as other managed and unmanaged switches. Firewalls: My security expertise includes working with a wide range of firewall solutions from Cisco, Palo Alto, FortiGate, Huawei, Mikrotik, and Sophos. Wireless: I'm proficient in deploying and managing Wi-Fi solutions from Ubiquiti (UniFi), Ruckus, TP-Link, and Tenda. VPNs: My skills extend to implementing secure remote access using OpenVPN, WireGuard, and Cisco AnyConnect. Network Monitoring: I use industry-standard tools like Zabbix, Nagios, Checkmk, Cacti, and Solaris to ensure network health and performance. Systems & Virtualization Microsoft: I have a strong background in Windows Servers, Active Directory, Office 365, Azure AD, SharePoint, Exchange Online, and Teams. Linux: My Linux administration skills cover a variety of distributions, including Red Hat, Debian, SUSE, Kali Linux, CentOS, Ubuntu, and Fedora. Virtualization: I am an expert in virtualization technologies, including VMware vSphere, Hyper-V, Proxmox VE, Citrix Xen, and XCP-ng. Containerization: I am proficient in Docker, Kubernetes, and OpenShift for modern application deployment. Storage Solutions: I have hands-on experience with Synology NAS, SAN, Unraid, and TrueNAS. Mail Servers: My skills in email management include working with MS Exchange, Modoboa, Postfix, and Dovecot. Cloud & Security Cloud Computing: I am well-versed in cloud services, including SaaS, PaaS, and IaaS, and have practical experience with AWS, Azure, Hetzner, and Contabo. Endpoint Protection: My security skills include managing endpoint protection solutions like EDR, XDR, CrowdStrike, Falcon Sensor, Vipre, and ESET. SIEM Solutions: I have experience with Wazuh and Splunk for security information and event management. Applications & Tools Linux Applications: I have a strong command of common Linux applications such as Nginx, Apache, Gitlab, dhcpd, Bind9, and PowerDNS. Ticketing Systems: I'm proficient in using ticketing and project management tools like Redmine and Jira. VoIP: My experience includes working with VoIP platforms such as Vicidial and Issabel.

I provide reliable Cloud, ERP, VPN, Firewall, Backup, Remote Access, and IT Infrastructure solutions for businesses. I help companies set up, secure, manage, and troubleshoot their IT systems including servers, cloud hosting, VPN, firewalls, backup solutions, RDP access, Proxmox infrastructure, ERPNext hosting, accounting software, and monthly IT support SLA. My services include: • Cloud server setup and management • Dedicated and standard server configuration • Proxmox infrastructure deployment and support • Hetzner cloud support • OpenVPN and remote access setup • Fortinet firewall configuration and troubleshooting • RDP users and CAL services support • ERPNext hosting and rental-based ERP/accounting software • Accounting and inventory software support • SSL security setup • Veeam and Nakivo backup configuration • Backup storage and file server solutions • Windows and Linux server support • IT troubleshooting and end-user support • Monthly IT support SLA for businesses I focus on secure, stable, and business-ready solutions. My goal is to provide clean deployment, proper documentation, reliable troubleshooting, and long-term support for clients. If you need help with cloud hosting, VPN, firewall, remote access, ERP hosting, backup, or complete IT infrastructure, I can support you from planning to deployment and ongoing maintenance. Let’s discuss your requirement and build a reliable solution for your business.