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:

  • Secured and configured private networks by implementing security measures like IP SLA, NAT and ACLs
  • Integrating SIP trunks between billing platforms, PBXs and VoIP applications
  • Setting up Postfix mail server on Linux systems with TLS authentication and encryption
  • Installing and configuring sip telephony software like ASTPP into businesses
  • Developing web applications that can send and receive SMS messages utilizing VoIP APIs

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 31,208 reviews, clients rate our VoIP Developers 4.88 out of 5 stars.
Hire VoIP Developers

Filter

My recent searches
Filter by:
Budget
to
to
to
Type
Skills
Languages
    Job State
    25 jobs found, pricing in USD
    VoIP Server 6 days left

    I will need a voip server for my call center, I need it to be created in magnusBilling in a VPSand for my clients to be able to change the caller ID directly from a softphone using a code, I also need my clients to be able to play hold music, Will like to find someone want to work long term for the maintenance of the server

    $176 (Avg Bid)
    $176 Avg Bid
    11 bids

    I am seeking an experienced network engineer who can set up a remote access VPN on my Cisco ASR1001 router. TASKS: 1. The VPN setup should specifically use L2TP/IPSec protocol. 2. The authentication should be password-based. Skills & Experience: - Expert knowledge of L2TP/IPSec VPNs - Proven experience with Cisco ASR1001 router setup - Strong understanding of password-based authentication - Good troubleshooting skills and attention to detail. Please provide examples of similar router/VPN setups you have handled.

    $353 (Avg Bid)
    $353 Avg Bid
    25 bids

    I'm currently using a manual dialing system and looking to transition to ViciDial to handle my call volume of 50-500 calls per day. I'm specifically interested in the predictive dialing feature. Ideal skills and experience for this job would include: - Expertise in ViciDial setup and configuration - Solid understanding of call center operations - Experience in optimizing dialing systems for medium call volumes - Mastery in setting up predictive dialing systems Success on this project would mean a smooth transition from my current manual dialing system to an optimized ViciDial system that can effectively manage my daily call volumes, incorporating predictive dialing capabilities for efficiency.

    $122 (Avg Bid)
    $122 Avg Bid
    2 bids

    I'm in search of an experienced Radius Server Developer who can take on a comprehensive project. create a radius server that can communicate with OLT, ROUTERS AND VM on HUAWEI, CISCO, FIBERHOME, VSOLUTION, MIKROTIK, UBIQUIT and others through PPPOE, VLAN, IPOE, HOTSPOT ETC

    $600 (Avg Bid)
    $600 Avg Bid
    5 bids

    I'm looking for an experienced computer administrator to help me set up a call center system using Vicidial. Additionally, I require network maintenance services and an OpenVPN setup for 11-50 users. Key Tasks: - Setting up a Vicidial call center system - Providing ongoing network maintenance and computer maintenance - Configuring OpenVPN for 11-50 users business hours 7am-6pm pst los angles time send me resume and sample of your work full or part time job available Ideal Skills and Experience: - Proven experience in setting up Vicidial call center systems - Strong background in network maintenance - Proficient in OpenVPN configuration - Familiarity with supporting 11-50 users - Excellent problem-solving skills and attention to detail Please bid if you have the right skills and ...

    $23 / hr (Avg Bid)
    $23 / hr Avg Bid
    20 bids

    I need a skilled Kamailio specialist to set up a proxy server that's capable of sending push notifications to Android and iOS softphone apps (We already have the apps). Key Requirements: - Cross-Platform Compatibility: The server needs to support both Android and iOS. - High Volume: The proxy will need to handle a substantial amount of push notifications, so performance and reliability are paramount. Ideal Skills & Experience: - Expertise in Kamailio: Experience working with Kamailio in a similar capacity is essential. - Push Notification Implementation: A strong understanding of push notifications and how to implement them across different platforms. Please provide details of your experience with Kamailio and any other relevant technologies in your proposal.

    $173 (Avg Bid)
    $173 Avg Bid
    24 bids

    I'm looking for an experienced professional who can help me with setting up and utilizing to enhance my recruitment business. Key Responsibilities: - Set up : I need assistance in creating an effective setup of from scratch. This includes but is not limited to integrating with our existing systems and ensuring all necessary tracking and analytics are implemented. - Lead Generation: Utilize to identify and engage with potential leads in the recruitment sector. Key Objectives: - Increasing Sales Conversions: The primary goal of using is to improve our sales conversion rates. The ideal candidate should be able to strategize and implement initiatives that will lead to increased sales and revenue. Ideal Candidate: - Proven Track Record: I'm looking for someone who has a succ...

    $10 / hr (Avg Bid)
    $10 / hr Avg Bid
    2 bids
    PBX / VOIP / SBC engineer 3 days left
    VERIFIED

    I'm in need of an experienced PBX / VOIP / SBC engineer who can address several issues with our customers phone systems system. The primary goal of this project is to troubleshoot and maintain current systems. Key Responsibilities: - Troubleshoot ongoing call quality issues - Investigate and resolve call drops - Address any connectivity problems Skills Required: - Extensive experience with Asterisk and other PBX systems - In-depth knowledge of VOIP network architecture - Proven track record in troubleshooting and maintenance Please only apply if you have a strong background in VOIP technologies and are confident in your ability to resolve issues.

    $18 / hr (Avg Bid)
    $18 / hr Avg Bid
    16 bids

    I'm in need of an experienced Genesys engineer who specializes in configuration, reporting, and integration. You will be responsible for: - - Required reporting includes real-time reporting, historical reporting, and the creation of custom reports. Reports and dashboards need to be setup Expertise in Genesys configuration is a must, coupled with strong troubleshooting skills. A thorough understanding of IVR setup and skill-based routing configuration is also necessary. Knowledge of differing reporting techniques would be a plus. In addition you will be expected to show your expertise on the Genesys platform.

    $37 / hr (Avg Bid)
    $37 / hr Avg Bid
    22 bids

    I am currently using FlyNumber PBX system with Acrobits phone app and it requires further integration. FlyNumber has an integrated PBX dashboard but needs to be reconfigured. The following features should be implemented: - Call Forwarding: This is necessary for smooth operation. - Voicemail Management: Must handle voicemail effectively. - Call Routing: Ensures calls are directed appropriately. - Call Recording: Important for quality assurance. - Custom Greetings and Transfer Music: Two phone numbers specifically need custom greetings, and I want my calls to have transfer music playing. The ideal candidate will have experience in PBX systems specifically FlyNumber. Advanced knowledge of call features as mentioned and previous work on voicemail handling, call routing and call recording is...

    $221 (Avg Bid)
    $221 Avg Bid
    6 bids

    I am seeking a highly skilled freelancer with intensive experience in FusionPBX and Freeswitch. The main objective of this project is the creation of a precise dial plan for FusionPBX. The developed dial plan should effectively handle active calls - holding them temporarily during paging calls. Key tasks include: * Dial plan must allow higher priority calls to override held calls * Acceptance of priority levels for different callers as input parameters The ideal candidate should possess these skills and experience: * Proven experience in FusionPBX and Freeswitch * Knowledge of implementing dial plans * Understanding of call flows and priority handling. Your task will revolve around ensuring a smooth call flow process during the paging, which detailed understanding of PBX systems an...

    $17 (Avg Bid)
    $17 Avg Bid
    2 bids

    We will give you: 1. Virtual Numbers 2. SIP Trunk server I am in need of an expert who can develop a SIP Trunk server with the capability of enabling live voice stream access. Key Requirements: - SIP Trunk Server: The primary purpose of this project is the development of a SIP Trunk server. It is essential that the chosen freelancer has experience in developing such systems. - Live Voice Stream Access: The server must offer functionality to enable live voice stream access. This feature must be robust, reliable, and seamlessly integrated into the server. - Access Control: I need the live voice streams to be secured with user-based permissions. This ensures that only authorized users can access the streams. Integration: - The primary platform that the SIP Trunk server will integrate with ...

    $17 / hr (Avg Bid)
    $17 / hr Avg Bid
    9 bids

    I'm in need of a skilled professional to configure my Fusion PBX system to implement direct call routing. Key Requirements: - The system is currently cloud-hosted. Prior experience with cloud-hosted PBXs is a plus. - I have between 1-10 phone numbers that need to be set up for direct routing. So the Requirement is : You have to configure Inbound Calls using a Soft Switch and Route them to Outbound to an External Location. I am not familar with Fusion PBX UI, which is causing the Problem only. The ideal candidate for this project will have: - Relevant experience in configuring Fusion PBX systems. - Strong understanding of direct routing in PBX systems. - Prior experience with cloud-hosted PBX systems.

    $103 (Avg Bid)
    $103 Avg Bid
    3 bids

    I'm in need of a skilled professional to configure my Fusion PBX system to implement direct call routing. Key Requirements: - The system is currently cloud-hosted. Prior experience with cloud-hosted PBXs is a plus. - I have between 1-10 phone numbers that need to be set up for direct routing. The ideal candidate for this project will have: - Relevant experience in configuring Fusion PBX systems. - Strong understanding of direct routing in PBX systems. - Prior experience with cloud-hosted PBX systems.

    $89 (Avg Bid)
    $89 Avg Bid
    2 bids

    I am looking for an Asterisk/SIP expert to help me configure a SIP trunk. Specific tasks include: - Configuring the SIP trunk on my Asterisk server - Assisting with troubleshooting any issues that arise during the setup process Requirements: - Expertise in Asterisk and SIP configuration - Experience with setting up SIP trunks - Familiarity with troubleshooting Asterisk setups Additional information: - I already have a SIP provider - Ongoing maintenance assistance will be required after the SIP trunk has been configured.

    $131 (Avg Bid)
    $131 Avg Bid
    12 bids

    I am looking for an English-speaking freelancer who can help us with rescheduling appointments for our medical spa. Your primary role will be to contact clients who have previously scheduled an appointment but didn't show up. Key Responsibilities: - Make outbound calls to clients to reschedule their missed appointments. - Provide excellent customer service and handle customer complaints or issues effectively. - Maintain a high level of professionalism and integrity throughout the communications. Ideal Skills and Experience: - Proven experience in making sale calls or appointment setting. - Strong persuasive skills is a must - you should be able to convince clients to reschedule their appointments. - Excellent customer service skills and a positive attitude. - Familiarity with VoIP s...

    $6 / hr (Avg Bid)
    $6 / hr Avg Bid
    8 bids

    I'm in need of a skilled professional to configure my Fusion PBX system to implement direct call routing. Key Requirements: - The system is currently cloud-hosted. Prior experience with cloud-hosted PBXs is a plus. - I have between 1-10 phone numbers that need to be set up for direct routing. The ideal candidate for this project will have: - Relevant experience in configuring Fusion PBX systems. - Strong understanding of direct routing in PBX systems. - Prior experience with cloud-hosted PBX systems.

    $9 / hr (Avg Bid)
    $9 / hr Avg Bid
    4 bids

    I'm in need of a skilled professional who can set up a virtual audio mixing station for my radio. This will be specifically for Windows, so deep knowledge of this platform is essential. We use SoftPhone Xlite 3.0 to call clients We need someone to show us how can we play audio file and that playing will be set as Microphone on xlite but after i play voice, i will need to be able to speak from microphone without need to change settings how can we achievve that? Key Requirements: - **Experience**: I need someone with a good amount of experience in setting up virtual audio mixers for radio stations. - **Windows Proficiency**: As this setup will be on Windows, you should be well-versed with this operating system. - **Intermediate Level**: I need an intermediate level of complexity ...

    $15 (Avg Bid)
    $15 Avg Bid
    2 bids
    Flutter VoIP App Development 2 days left
    VERIFIED

    We have a voip app, voice calling with sip and fcm setup for the push notifications, we like to have a call alert like whatsapp calling alert that can handle both foreground and background states in Android and iOS. Also mention if somebody already worked on this type of feature, bid and connect to show a demo. Feature Required: Call Notification Incoming Screen Alert on App background and foreground State both killed or behind other apps. When you accept the call redirect to the ongoing call screen and call get connected with sip.

    $66 (Avg Bid)
    $66 Avg Bid
    13 bids

    I require a professional to install Vital PBX on my server and program it to cater to our customer support needs. Key Requirements: - Vital PBX Installation: I need the freelancer to set up Vital PBX from scratch on my server. - Customization for Customer Support: The PBX system should be configured to enhance our customer support services. This might include call routing, IVR customization, and integration with our existing communication channels. Ideal Skills and Experience: - Proficiency in Vital PBX Installation: The freelancer should have experience in installing and setting up Vital PBX on various server environments. - PBX Programming: Strong background in programming PBX systems to meet specific organizational needs is crucial. - Customer Support Focus: Understanding of custome...

    $602 (Avg Bid)
    $602 Avg Bid
    18 bids

    I am in need of an expert OpenSIPS VOIP Developer who can help create a robust system with high quality call routing. The main feature's to be implemented are NAT Handling in the Cloud, Microsoft Direct Routing, and Mid Registrar. The system should be designed to interact efficiently with PBX systems (FreeSWITCH) and OpenSIPS. Required Skills: - Extensive experience with OpenSIPS VOIP system development - Strong understanding of direct call routing - Proficiency in integrating VOIP systems with PBX and OpenSIPS - Familiarity with general telecoms concepts and technologies. The ideal freelancer should have worked on similar projects and be ready to showcase relevant examples in their proposal. If this project goes well, there could be more ongoing work. I look forward to discussing ...

    $25 / hr (Avg Bid)
    $25 / hr Avg Bid
    12 bids

    I'm in need of a knowledgeable and experienced Asterisk expert for the implementation in our company We need an Asterisk specialist to help us set up a carousel of different numbers and provider accounts. The essence of the task, when calling, automatically should be substituted random number from our list. Details and scheme will be discussed individually

    $24 / hr (Avg Bid)
    $24 / hr Avg Bid
    30 bids

    I'm in need of an experienced PBX / VOIP / SBC engineer who can address several issues with our customers phone systems system. The primary goal of this project is to troubleshoot and maintain current systems. Key Responsibilities: - Troubleshoot ongoing call quality issues - Investigate and resolve call drops - Address any connectivity problems Skills Required: - Extensive experience with Asterisk and other PBX systems - In-depth knowledge of VOIP network architecture - Proven track record in troubleshooting and maintenance Please only apply if you have a strong background in VOIP technologies and are confident in your ability to resolve issues.

    $20 / hr (Avg Bid)
    $20 / hr Avg Bid
    16 bids

    I'm in need of a freelancer with expertise in setting up Virtual PBX systems and CRM integration, particularly with Vitiger CRM. The primary use of this system will be for sales and marketing purposes. Key responsibilities will include, but are not limited to: - Setting up a Virtual PBX system - Configuring Vitiger CRM - Integrating the Virtual PBX system with Vitiger CRM for seamless operation - Enabling predictive dialing for 4 separate campaigns - Ensuring a smooth and efficient workflow between the PBX and CRM for sales and marketing purposes. Ideal skills for this job include: - Proficiency in Virtual PBX systems - Extensive experience with Vitiger CRM - Previous work with predictive dialing configurations - Strong understanding of sales and marketing processes - Excellent pro...

    $17 / hr (Avg Bid)
    $17 / hr Avg Bid
    5 bids

    I'm seeking a proficient Asterisk developer who can build a custom PBX system with Issabela or something comparable. The PBX system requirements are as follows: - Less than 10 extensions. - Features such as call recording, auto-attendant, and call routing. - Compatible with VoIP phone lines. Ideal candidate should possess a deep expertise in Asterisk and a good understanding of VoIP technology. Knowledge of Issabela or similar software is an added advantage. Let's connect if you can guarantee a seamless and efficient communication system. For more information, sent the requerimients - The calls received would be answered by several receptionists who would log in/unlog in with their landline to receive the call. If there are more calls than receptionists, a message will appear ind...

    $1360 (Avg Bid)
    $1360 Avg Bid
    34 bids

    Recommended Articles Just for You

    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.
    11 MIN READ
    Learn how to find and work with a top-rated Google Chrome Developer for your project today!
    15 MIN READ
    Learn how to find and work with a skilled Geolocation Developer for your project. Tips and tricks to ensure successful collaboration.
    15 MIN READ