The ultimate guide to hiring a web developer in 2021
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VoIP, otherwise known as Voice over Internet Protocol, is a digital solution for telecommunication that utilizes the transmission of voice through the use of data over the internet. This technology is typically adopted for both commercial and privately used applications. VoIP developers specialize in programming telecommunication systems using data transmission to provide efficient services for audio and video functions.
VoIP developers are highly sought after professionals as they can create a versatile and advanced system for both desktop and mobile devices. This can include creating a more interactive experience for customers with multi-way calls, conference calls, video conferencing and voicemail systems. VoIP developers can set up your business’s phone system such as forwarding calls remotely to other devices with extensions or even communicating with customers utilizing software like Callcentric, Flowroute or Voxbone.
Here's some projects that our expert VoIP Developer made real:
Our expert VoIP Developer have created numerous projects to help business owners manage their telecommunications in a professional bet. Our developer have an array of experience in creating a secure and reliable system customized to each client demands. If you're looking to improve or create your business’ communication system, then post your project today on Freelancer.com to hire one of our skilled professional VoIP Developers today!
From 23,726 reviews, clients rate our VoIP Developers 4.83 out of 5 stars.VoIP, otherwise known as Voice over Internet Protocol, is a digital solution for telecommunication that utilizes the transmission of voice through the use of data over the internet. This technology is typically adopted for both commercial and privately used applications. VoIP developers specialize in programming telecommunication systems using data transmission to provide efficient services for audio and video functions.
VoIP developers are highly sought after professionals as they can create a versatile and advanced system for both desktop and mobile devices. This can include creating a more interactive experience for customers with multi-way calls, conference calls, video conferencing and voicemail systems. VoIP developers can set up your business’s phone system such as forwarding calls remotely to other devices with extensions or even communicating with customers utilizing software like Callcentric, Flowroute or Voxbone.
Here's some projects that our expert VoIP Developer made real:
Our expert VoIP Developer have created numerous projects to help business owners manage their telecommunications in a professional bet. Our developer have an array of experience in creating a secure and reliable system customized to each client demands. If you're looking to improve or create your business’ communication system, then post your project today on Freelancer.com to hire one of our skilled professional VoIP Developers today!
From 23,726 reviews, clients rate our VoIP Developers 4.83 out of 5 stars.I'm looking to integrate Twilio with Cisco Call Manager for voice communication, specifically to set up call routing. Key Requirements: - Utilize Twilio SIP for connecting with Cisco Call Manager - Implement call routing features as per our requirements Ideal Skills and Experience: - Experience with Twilio and Cisco Call Manager - Strong understanding of SIP protocols - Expertise in call routing configuration
Our worksite inside Newark Liberty International Airport (EWR) is suffering repeated network drop-outs that disrupt daily operations. I need an experienced IT technician who can come on-site, trace the root cause of the connectivity issues, and get every device reliably back online right away. Here is what the visit will involve: • Diagnose the physical and logical network path from ISP hand-off through our switch rack and out to several workstations and VoIP phones. • Identify and correct cabling, switch, router, or configuration faults responsible for the disconnections. • Validate stability once fixes are applied and supply a brief post-visit report outlining what you found and how you resolved it. You should be comfortable working around standard enterprise gear (...
I need a skilled technician to install a VX2200 GSM module on my Videx intercom system. The primary functionality I want to enable is call forwarding to another UK landline number, with immediate forwarding. Key Requirements: - Expertise in intercom systems, specifically Videx - Experience with VX2200 GSM module installation - Ability to configure immediate call forwarding to mobile devices Ideal Skills and Experience: - Background in telecommunications or security systems - Previous installation experience with Videx and GSM modules - Strong problem-solving skills and attention to detail Please ensure the system is fully operational and test all functionalities post-installation. The location is 86-90 paul Street, London, EC2A 4NE
We run a fast-growing online pharmacy and need a male freelance tele executive who can stay on top of the constant flow of medicine orders. Your core responsibility will be end-to-end order processing: answering inbound calls, confirming prescriptions, entering the order into our system. Engagement Type: Freelance / Part-time Mode of of Work: Remote Pay : Pay-per-call basis Responsibilities Assist customers in placing medicine orders. Verify order details and coordinate order processing. Provide courteous customer support and resolve basic queries. Maintain confidentiality of customer information. Requirements Basic knowledge of medicines and healthcare products. Good communication skills in English and Hindi (knowledge of regional languages is an added advantage). Good interp...
I run a fast-growing startup that delivers Managed IT Services to small and mid-sized companies. To accelerate growth I need someone who can confidently pick up the phone, uncover decision-makers and move the conversation all the way to a signed agreement. Your day-to-day will be straightforward: identify fresh prospects across law, finance, retail, healthcare, engineering—really any sector with an IT pain point—introduce our offer and keep the dialogue alive until the deal closes. When you talk to them, lean hard on the three benefits that set us apart: • Cost-effectiveness • 24/7 support • Custom solutions I’ll provide a concise service brief, pricing guidelines and access to our quoting tool; you bring a proven outbound system, your own calling s...
Position : MAINFRAME NETWORK JOB DESCRIPTION :- We are looking for a candidate that has experience in GDPS and REXX. 1. Installation, upgrade and maintenance of VTAM, TCPIP, OSA and related products 2. Sound knowledge in SMPE 3. Interface with operations, logs and automation jobs. 4. Good knowledge of related software and tools. 5. Good experience with software maintenance. 6. Experience in backup and recovery processes for subsystems. 7. Knowledge in resource definition, security and other administration tasks. 8. Strong Networking knowledge, skills in Printers configuration, FTP, SMTP, SNMP configurations. 9. Experienced technician with basic skills in most and more advanced skills in some of the following: a. ...
I'm moving and need help installing several devices in my new home. Required Installations: - Flat-screen TV - Laptop - VoIP phone Ideal Skills and Experience: - Experience with home tech installation - Familiarity with flat-screen TV mounting and setup - Knowledge of laptop configuration and VoIP phone setup - Attention to detail and reliability and set up printer Looking for someone who can ensure all devices are properly installed and ready to use. Please provide any relevant experience in your bids.
I need a working SIP-edge on an Ubuntu 22 / 24 VM that lets MicroSIP register over TLS even in networks where standard SIP/VoIP traffic is blocked. The edge will terminate the TLS leg, proxy the signalling to my existing VoIP switch over plain UDP, and keep media flowing through RTP Engine. What I will provide • A clean VM (public IP, sudo access) • SIP account details for registration tests • Any public cert/key material you need for stunnel or Kamailio TLS Scope of work – Install and configure Kamailio as the front-end SIP proxy. – Enable TLS support so MicroSIP can register and place calls securely. – Use RTP Engine to anchor media and make sure audio is two-way. – Deploy stunnel (or an equivalent TLS wrapper) if it...
I'm looking for a skilled developer to create an IVR testing tool with automated call handling functionalities, specifically for outbound marketing or sales calls. Key Requirements: - Automated Call Handling: The tool should manage outbound calls automatically. - Call Type: The system will primarily handle marketing or sales calls. Ideal Skills and Experience: - Experience in developing IVR systems - Proficiency in automated call handling technologies - Background in managing outbound call operations - Knowledge of call quality analysis and script compliance verification is a plus
I'm looking for an experienced sales agent who can find a qualified buyer for my production-ready VoIP infrastructure. The system includes a fully configured VICIdial + Asterisk 18 deployment with predictive dialing, Press-1 IVR, multi-agent support, SIP trunk integration, security hardening, daily backups, and a deployment image for fast restoration. Your job is not to configure or manage the system. Your primary responsibility is identifying serious buyers, introducing them to me, and helping close the deal. Payment will be commission-based: 10% of the sale price. Additionally, if you sell at a higher price than expected, you'll earn bonus incentives. Please include: - Your experience in B2B sales or telecom/VoIP sales. - Any relevant connections or previous successful sales...
I’m looking for a self-driven telecaller who can work remotely and focus exclusively on outbound sales calls that generate qualified leads. The campaign targets both B2B and B2C prospects, so you’ll need the confidence to speak with decision–makers at companies as well as individual consumers. You’ll receive an initial brief with the product overview, a calling script, and a contact list. Using any reliable VoIP or mobile solution on your end, you’ll place calls, follow the script naturally, handle basic objections, and capture the prospect’s interest level in a shared Google Sheet or CRM. Deliverables • Daily call log with dialed numbers, call outcomes, and short notes • A verified lead list that includes name, phone/email, interest stat...
I need a hands-on Twilio specialist to roll out two closely related pieces of work: • Programmable Voice – design and deploy the full call flow for our web application. That includes buying numbers, configuring IVR menus, call routing, voicemail, recording, and analytics. Everything should connect smoothly to our Node.js/Firebase backend through the Twilio Node SDK or Functions. • SMS Marketing – build a compliant Messaging Service for promotional campaigns, create templates, set up A2P 10DLC registration, scheduling, and deliverability tracking. Once live, you will monitor performance, run A/B tests, and refine copy or segmentation based on results. After launch I’d like ongoing support, so the engagement covers both the initial setup and day-to-day manageme...
Twilio SIP Trunk / 3CX VoIP Configuration Specialist Needed **Description:** I’m looking for an experienced VoIP engineer to help with a SIP trunking setup involving Twilio and 3CX. The ideal freelancer should have hands-on experience with: - Twilio Elastic SIP Trunking - 3CX SIP trunk configuration - DID setup and routing - Local and toll-free U.S. numbers - Inbound and outbound call testing - Caller ID configuration - SIP registration, authentication, codecs, and NAT/firewall troubleshooting - Basic VoIP quality checks and call-flow validation This is a small but time-sensitive setup task. I’ll share the exact requirements, current environment, and expected call flow privately with shortlisted candidates. Please apply only if you have configured Twilio SIP trunks with ...
I’m setting up a high-volume call center environment and need reliable SIP trunk accounts sourced and configured by someone based in the United States or Canada. The trunks must support unlimited concurrent channels and come with local U.S. DID numbers so my agents can place and receive calls without hitting channel caps or routing delays. Here’s what I’m expecting from you: • Active SIP trunk credentials ready for immediate integration with our existing PBX/soft-switch (we use standard SIP, so Broadsoft, FreePBX, Asterisk, or similar interoperability is fine). • A block of U.S. local numbers assigned to the trunk. • Confirmation that the service remains stable under sustained outbound volume typical of call-center traffic. • Basic caller-ID ...
Ich möchte meine Microsoft-Umgebung in einem Zug professionell aufsetzen und harmonisieren. Konkret geht es um vier zusammenhängende Aufgaben: 1. Outlook und Microsoft Teams sollen nahtlos miteinander verbunden werden, sodass Kalender-Einladungen, Besprechungen und Chats direkt ineinandergreifen. Dabei nutze ich das neue Outlook und will es exakt auf meine Bedürfnisse zuschneiden – von angepassten E-Mail-Ansichten bis hin zu optimierten Kalender-Darstellungen. Ich freue mich hier auch über praxisnahe Tipps & Tricks, die den täglichen Workflow erleichtern. 2. In Microsoft Teams soll meine geschäftliche Telefonnummer eingebunden werden. Ich benötige also die vollständige Telefonie-Einrichtung (Anrufweiterleitung, Voicemail, ggf. Dial-Plan),...
If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
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