Hire the Best Grandstream Specialists

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Ahmed S.

Masr Al Jadidah, Egypt

$50/hr
4.7
271 jobs

Experienced VoIP & IT Infrastructure Engineer with 8+ years of hands-on experience designing, deploying, and supporting VoIP systems, cloud communications, and enterprise IT environments. Specialized in 3CX, FreePBX, ViciDial, SIP trunking, Twilio, Microsoft Teams, AWS cloud deployments, and Microsoft 365 administration. I have successfully deployed and managed call center solutions, PBX systems, SIP trunks, IP phones, Microsoft 365 environments, VMware virtualization platforms, and network infrastructure for businesses ranging from startups to enterprise organizations with 200+ users. My expertise includes VoIP deployments, cloud migrations, Microsoft 365 administration, Active Directory, VMware ESXi, AWS, Azure AD, networking, and SLA-driven technical support. I am committed to delivering reliable, secure, and scalable solutions while providing exceptional support and troubleshooting services. Whether you need a new VoIP deployment, migration, cloud PBX setup, Microsoft 365 administration, or ongoing IT support, I can help you achieve your goals efficiently and professionally.

  • Customer Support
  • System Administration
  • Linux System Administration
  • Google Workspace Administration
  • WebRTC
  • VoIP Administration
  • Helpdesk
  • FreePBX
  • Call Center Management
  • IT Support
  • IT Service Management
  • IT Management
  • IT Procurement
  • IT Infrastructure
  • IT Consultation
Kamil S.

Swiecie, Poland

$70/hr
5.0
1 jobs

Hi , With 8+ years of experience in VoIP engineering and telecom infrastructure, I help businesses build, customize, and scale reliable call center and communication platforms ranging from small business deployments to carrier-grade environments. I specialize in designing high-performance VoIP systems, advanced dialer solutions, telecom billing platforms, and cloud-based communication infrastructures that are secure, scalable, and cost-effective. ⭐️ What I Can Help You With 1. VoIP & PBX Solutions - Asterisk, FreePBX, FreeSWITCH, Elastix, Issabel, FusionPBX - 3CX, PBXware, VoIPOffice - SIP Trunking & Carrier Integrations - Multi-server VoIP architecture - High Availability (HA), clustering, failover, and load balancing - Security hardening and system optimization 2. VICIDial & Call Center Development - Complete Inbound, Outbound, and Blended Call Center Setup - VICIDial installation, customization, and troubleshooting - Custom campaign logic and workflow development - Agent interface redesign and UI/UX enhancements - Custom reports and dashboards - VICIBox multi-server clustering - Voice broadcasting and predictive dialing solutions 3. Asterisk Development - Advanced dialplan design - AGI scripting and custom applications - IVR development and automation - Call routing optimization - Conference solutions and WebRTC integrations - Custom webphone development 4. CRM & API Integrations - Twilio, Telnyx, SignalWire, Bandwidth, Plivo, VoIP.ms - CRM integrations and lead management systems - REST API development and automation - Webhook and real-time data synchronization - Third-party call transfer solutions - TrackDrive and custom lead posting integrations 5. Telecom Billing Platforms - A2Billing - ASTPP - VOS3000 - Magnus Billing ⭐️Services include: - Billing customization - CDR processing - Multi-tenant deployments - Reseller management systems - Callback and IVR customization 1. AI Voice Agents & Automation - ElevenLabs - Vapi - AI-powered voice assistants - Conversational AI integrations - Voice workflow automation 2. SMS Solutions - Bulk SMS platforms - SMS broadcasting systems - Two-way SMS applications - CSV-based bulk messaging portals - Twilio, Telnyx, SignalWire, Bandwidth, and VoIP.ms integrations ⭐️ Supported VoIP Providers Extensive experience integrating with major telecom carriers and providers, including: Twilio, Telnyx, SignalWire, VoIP.ms, Bandwidth, Flowroute, RingCentral, Nextiva, Plivo, Anveo, DIDLogic, IDT Express, SIP.US, Vitelity, Voxbeam, Telus, Nexmo, QuestBlue, Switch2VoIP, and many others. ⭐️ Why Clients Hire Me ✔️ 9+ Years of Specialized VoIP Experience ✔️ Deep Asterisk & VICIDial Source-Code Expertise ✔️ Carrier-Grade Deployments & Multi-Server Architectures ✔️ Strong API Integration & Automation Skills ✔️ Fast Troubleshooting & Performance Optimization ✔️ Reliable Communication & Long-Term Support Whether you need a new VoIP deployment, VICIDial customization, telecom billing platform, AI voice integration, or a complete call center solution, I can deliver a stable, scalable, and production-ready system tailored to your business needs. Le'ts have a chat !

  • Asterisk
  • FreePBX
  • VoIP Administration
  • System Administration
  • Linux
  • Linux System Administration
  • FreeSWITCH
  • A2Billing
  • Kamailio
  • SSH
  • TCP/IP
  • VoIP PBX
  • VoIP
  • MikroTik RouterOS
Junaid F.

Bannu, Pakistan

$10/hr
4.9
50 jobs

Greetings, Are you in need of VOIP PBX setup and IP calls, SMS, and call center features for your business? I am Junaid, a certified Asterisk, a 3cx certified (beginner to advanced) Engineer. My job responsibilities include Installation and configuration of IP PBX on cloud platforms such as Vultr, AWS (Lightsail, ec2), Digitalocean, Azure, and on-site installation on local machines or virtual machines. I am an Asterisk certified, 3cx advanced certified engineer, FreePBX, and FusionPBX expert. My Graduation is in Telecom and have seven years of experience in IT, VOIP, and Server Administration. Skills (VOIP) - Install, Configure, and set VOIP Pbx on Linux and Windows operating systems. - Configure custom domain and DNS setup with SSL configuration or Let's encrypt. - PBX Configuration includes extensions creation, Ring Groupes, IVR (Digital Receptionist) Call Queues, Time Conditions, Inbound and Outbound routes setup, and Voicemail. - SIP Trunk configuration for external inbound and outbound calls. The SIP setting also includes the network configuration and port (SIP 5060) setup. - Network and Firewall setup for smooth call routing on UDP and TCP protocols. - IP Phones ( Yealink, Fanvil, or Grandstream phones) and softphones (Xlite, Microsip, 3cx, Zoiper) configurations and provisioning with the PBX server. - Integration of third-party software like open source CRM (Vtiger, Zoho, Oddo), Billing software (ASTPP, A2billing). - Voice codecs and Transcoding setup. - Call flow app designing. - Troubleshoot the errors and issues in configuring the PBX. - Provide ongoing support and troubleshoot the issues on remote Anydesk or Zoom. VICIDIAL : Inbound and outbound campaign configuration. Predictive dialing campaigns, Preview dialing campaigns, and soundboard setup. Installation and configuration of cluster setup containing database server, web server and telephony server. IVR setup in ViciDial AI Voicebot We can use Asterisk to build your AI Agent that will handle the custom call flow and handle tasks. Integration of Microsoft Azure Speech to Text, Text to Speech and OpenAI with Asterisk/Freepbx Linux and IT Skills I am a certified RHEL administrator working on web server installation and configuration on Apache and Nginx, file system, installation, ownership, and permission, partitions, Archive compression tools and Rsync, Fdisk partitioning cases, Process and daemons, and performance monitoring. My job responsibilities as Linux admin include: - Installing VOIP PBX servers or Application servers on Apache and Nginx. - Configure Nginx as a Reverse proxy server. -Taking Backup of the Pbx and restoring on the new server. - Cron job scheduling in Linux for monthly and weekly backup, auto-renewal, and auto-recording deletion - Basic and advanced file system management and swap files. - Cisco certified network administrator, having work experience on Cisco switches, routers, and bridges. - Basic skills include Windows servers 2012, 2016, and desktop Windows 10, 8, and 7. - DNS and IP aliasing. - RPM Install, upgrade, and erase packages in Linux. - Performance monitoring using tools like Top, find, and FSH. - Database Administration. VOIP Servers mainly use Mysql, MariaDB, and Postgresql. Services - AWS Cloud Computing. Managing ec2 and Lightsail instances. - Aws S3 bucket configuration. Integrate S3 with external application servers. - ServerClient model NFS server - VSFTP Services - Samba Server - DNS server - Mail Server - Proxy server

  • VoIP
  • System Administration
  • Virtualization
  • System Security
  • 3CX
  • Session Initiation Protocol
  • LDAP
  • FreePBX
  • Linux System Administration
  • Red Hat Administration
  • Asterisk
  • NGINX
  • Vtiger
  • CRM Software
  • Apache HTTP Server
Kevin K.

New York, New York

$55/hr
4.5
14 jobs

Experienced Project Manager with cross-functional expertise and customer-centric focus. Technical expertise in webcasting and supporting both end users and clients. Project Management | Streaming Media Proven project manager with strong technical skills and understanding of webcasting requirements, networking, troubleshooting, vendor management, and business analysis. Worked with clients ranging from small businesses to enterprise level, and guided them to successful events and provided unwavering support for over 12 years. Established strong relationships with new and existing key vendors to expand our offering and keep company costs in check. Provided detailed analysis and troubleshooting for internal teams and clients if issues arose. CORE COMPETENCIES • Strong Managerial and people skills • Experience working in Agile and PMP Project Management methodology (Scrum Fundamentals Certified) • Streaming Media technologies (HLS, Flash) • WebRTC • 12 plus years’ experience in the webcasting and IT space. • 10 years’ experience in cross-functional roles, acting as a bridge between Development/Engineering and Sales/Operations teams. • Strong project documenting and tracking skills. ACCOMPLISHMENTS • Created new company department, Reservations Desk, to streamline company order intake processes. Held weekly meetings with Reservations Desk staff in the US and UK offices to coordinate order intake processes for US and EMEA teams. • Increased global presence by working with bridge vendors and Development and Engineering teams to add local dial-in numbers in non-US countries for “Integrated Audio” platform feature. • Expanded company reach to non-English speaking clients in Europe, South America, and Asia by working with Development and Engineering teams to create new language template. Please contact me for any Project Management or Customer Support opportunities.

  • Agile Project Management
  • Video Stream
  • Google Workspace Administration
  • HTML
  • HTML5
  • JAMF
  • WebRTC
  • Project Management
  • Cross Functional Team Leadership
  • User Identity Management
  • ISO 27001
  • Technical Support
Jose M.

Heredia, Costa Rica

$75/hr
5.0
216 jobs

I specialize in VoIP solutions with a focus on RingCentral (EX & CX) and Zoom (Phone & CC) project implementation and ongoing support. As a subject matter expert in the field, I work with businesses of all sizes to streamline communication systems, resolve complex technical challenges, and deliver seamless transitions to cloud-based telephony. Here's what you can expect when working with me: Deep Roots in VoIP: I'm not just certified; I'm passionate about what I do. With experience in RingCentral, Avaya, Zoom and Vonage, I'm well-versed in the intricacies of these platforms both in its UCaaS and CCaaS versions. Your Time Matters: I understand that every second counts in your business. That's why you can rely on me for prompt responses and effective solutions. Who I Serve: From small startups to large enterprises, I've had the privilege of assisting businesses of all sizes. My expertise spans various industries, including law firms, universities, fitness, and finance, to name a few. Here is a list of the most common tasks I perform within a VoIP platform: Call queues / Auto Attendant - IVR Call Forwarding / Call Routing Voicemail Setup / Custom Answering Rules Porting / User setup / Limited extensions SMS Automation** (10DLC) Multi Site Call logging expert / Audit trail Announcement / Audio greetings - Voice over Desk Phone Provisioning I'm here, ready to be your partner in enhancing your communication systems. Reach out to me here on Upwork and let's start a conversation, looking forward to understanding your unique needs and finding the perfect solution for you!

  • Call Center Management
  • Business with 100-999 Employees
  • Phone Support
  • VoIP PBX
  • System Administration
  • System Configuration
  • VoIP
  • Telecommunications Engineering
  • IVR Software
  • Telephone System
  • RingCentral Glip
  • Avaya
  • VoIP Software
  • VoIP Administration
  • Technical Support
  • PBX
Faisal A.

Lahore Cantt, Pakistan

$35/hr
5.0
30 jobs

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.

  • Customer Support
  • Asterisk
  • Cisco Certified Network Professional
  • Cisco CallManager
  • Technical Support
  • AWS CloudFront
  • AWS Server Migration
  • VoIP
  • Linux
  • LAMP Administration
  • Business with 10-99 Employees
  • FreePBX
  • MySQL
  • Talkdesk
  • OpenSIPS

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Don't just take our word for it

What does a Grandstream specialist do?

A Grandstream specialist configures, provisions, and manages Grandstream communication endpoints using centralized device management systems. This role focuses on automating the deployment of hardware through zero-touch provisioning protocols rather than manual setup. The specialist establishes secure connections between devices and auto-configuration servers to maintain consistent settings across large networks. They also monitor device health and execute remote maintenance tasks to keep communication systems operational.

  • Configure and provision Grandstream endpoints by setting device and account parameters in batches. The specialist uses the Grandstream Device Management System (GDMS) to apply configuration templates to groups of devices based on site, model, or function. This process eliminates the need to manually access each device web interface for initial setup.
  • Establish TR-069 connectivity so endpoints can communicate with an Auto-Configuration Server. The specialist sets the ACS URL and enables TR-069 parameters on devices to allow remote management capabilities. They may also configure DHCP options to distribute configuration template locations automatically to new devices on the network.
  • Manage firmware upgrades and perform remote troubleshooting through the device management workflow. The specialist initiates firmware downloads via GDMS and verifies success or failure status for each endpoint. They also execute remote maintenance actions such as reboots or factory resets to resolve connectivity issues without physical access to the hardware.

How to hire a Grandstream specialist on Upwork

Step 1: Post a job

Define your endpoint provisioning needs clearly so candidates understand the scope. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft a precise description in seconds. Describe your requirements in a few sentences, and Uma creates a structured post for you. Write a new post, update a saved draft, or reuse an existing one to start hiring immediately.

  • Specify whether you need batch configuration via Grandstream Device Management System (GDMS) or individual device setup using TR-069 parameters.
  • List the specific Grandstream endpoints involved, such as IP phones or gateways, and mention any required firmware upgrade workflows.
  • Include details about your Auto-Configuration Server (ACS) URL setup and any security protocols for per-device configuration identifiers.

Step 2: Evaluate candidates

Look for proven experience with zero-touch provisioning and remote device management. Uma runs instant video interviews and builds shortlists with side-by-side comparisons to help you identify qualified specialists quickly.

  • Review portfolios for evidence of successful GDMS deployments, including screenshots of configuration templates or batch management results.
  • Check for documented troubleshooting cases where the candidate resolved connectivity issues using TR-069 diagnostic features.
  • Verify experience with DHCP options distribution and Config Server Path setup to ensure devices point to the correct provisioning source.

Step 3: Interview your top choices

Discuss technical approaches to endpoint security and firmware management. Schedule and conduct interviews within Upwork Messages, which generates an immediate transcript and summary after each session.

  • Ask how they handle firmware upgrade failures and what steps they take to verify download success across multiple device models.
  • Request examples of how they configure ACS URLs and enable TR-069 on devices that do not connect automatically.
  • Discuss their method for managing account settings and device configurations in batches by site or group within GDMS.

Step 4: Agree on scope and begin work

Set clear milestones for provisioning, testing, and deployment. Use Upwork Messages and the contract workroom for all communication and project management, while identity verification, payment protection, hourly tracking, and project funds keep the engagement secure.

  • Define deliverables such as configured endpoints, applied TR-069 parameters, and verified firmware upgrade status reports.
  • Establish a timeline for batch provisioning outcomes and specify criteria for accepting device configuration by site or model.
  • Agree on remote maintenance actions, including reboot and factory reset procedures, to support ongoing deployment operations.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring a Grandstream specialist cost?

$500-$1,500 per project is a typical range for focused Grandstream specialist work. Final pricing depends on scope, technical complexity, required integrations, source-material quality, revision needs, and the freelancer's experience level.

TR-069 connectivity setup

$500-$1,200/project

Entry-level to mid-level
  • Applied TR-069 parameters and ACS URL on endpoints
  • Verified device connection to Auto-Configuration Server
  • Recorded configuration steps and parameter values

Endpoint provisioning

$1,200-$2,500/project

Mid-level
  • Configured account settings and device parameters
  • Provisioned devices by site, group, or model via GDMS
  • Confirmed successful provisioning status for all units

Firmware management

$2,500-$4,000/project

Mid-level to senior-level
  • Initiated firmware downloads through GDMS workflow
  • Checked download success or failure for each device
  • Compiled firmware version history and update results

Remote diagnostics

$4,000-$6,500/project

Senior-level
  • Performed remote reboot and factory reset via TR-069
  • Generated logs and status reports for managed endpoints
  • Documented identified issues and applied fixes

GDMS infrastructure integration

$6,500-$10,000/project

Expert-level
  • Set DHCP options to distribute configuration template location
  • Applied per-device configuration identifiers and security requirements
  • Mapped full provisioning workflow and integration points

Frequently asked questions

Is hiring a Grandstream specialist worth it?

For most businesses, yes: hiring a Grandstream specialist is worthwhile. This expert configures endpoints and manages batch provisioning through GDMS so your team avoids manual device setup errors. They also handle firmware upgrades and TR-069 connectivity to keep your communication hardware secure and functional.

How do I evaluate Grandstream specialist candidates?

Look for candidates who describe specific experience with GDMS zero-touch provisioning and TR-069 parameter setup. A strong candidate explains how they set the ACS URL on endpoints to enable remote management and verifies firmware download status after bulk updates.

What tools does a Grandstream specialist use?

A Grandstream specialist uses the Grandstream Device Management System (GDMS) to configure devices in batches by site or model. They also apply TR-069 protocols for remote diagnostics and use DHCP options to distribute configuration template locations to endpoints.

Can a Grandstream specialist troubleshoot remote devices?

Yes, a Grandstream specialist performs remote maintenance actions such as rebooting devices or initiating factory resets through TR-069 capabilities. They monitor diagnostic outputs in GDMS to identify connectivity issues without visiting the physical location.