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 26,306 reviews, clients rate our VoIP Developers 4.84 out of 5 stars.
Hire VoIP Developers

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 26,306 reviews, clients rate our VoIP Developers 4.84 out of 5 stars.
Hire VoIP Developers

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    12 jobs found

    Hi, Please understand the problem we are facing with a specific use case. You need to have knowledge of Twilio, SIP, and Asterisk. We are trying to achieve the following use case: A caller dials a Twilio number. After some time or under certain conditions, Twilio forwards the call to an Asterisk server. Asterisk receives the call from Twilio and immediately connects the caller to sip:test (essentially bridging the caller directly to the SIP address). Once the call is connected between the caller and sip:linphone, Twilio should no longer be involved in the call (to avoid duration charges). The desired flow is: Caller → Twilio → Asterisk → sip linphone At the end, the connection should be: Caller → sip inphone We understand that we will need to pay Twil...

    $558 Average bid
    $558 Avg Bid
    15 bids

    After removing an SD-WAN device, my VoIP system is encountering issues. My current setup involves an ATT Modem connected to a Meraki MX100, which serves as the DHCP server, and then to a Cisco SPF350 switch. Here's the situation: - The phones work fine when connected directly to the modem. - My Laptop receive DHCP IPs when connected to the phone via ethernet. - However, the phone fail to get an IP when connected to any port of the switch. I need someone to troubleshoot the current configuration. All other devices in the network are functioning as expected. Ideal skills for this job include: - Extensive knowledge of Meraki MX100 and Cisco SPF350. - Experience with VoIP network issues. - Strong troubleshooting skills. Please provide a detailed plan of action and any similar past ...

    $25 / hr Average bid
    $25 / hr Avg Bid
    16 bids

    I'm seeking a professional developer with substantial experience in VoIP and API integration, specifically with the SkySwitch platform. The goal of this project is to connect our VoIP platform with several dental databases, including Dentrix, Open Dental, Portex, Tracker Dental, and ABELDent. Key Requirements: - Expertise in SkySwitch API: I need someone who can seamlessly integrate our VoIP platform with the SkySwitch API. - Experience with Dental Databases: Familiarity with the aforementioned dental databases is a plus. - Call Management and Messaging Services: The project will involve integrating call management and messaging services from our VoIP platform to these dental databases. - Billing Integration: The project will also require some level of billing integration. Ideal Sk...

    $485 Average bid
    Featured NDA
    $485 Avg Bid
    13 bids

    I'm looking for an experienced freelancer who can set up a professional mobile proxy system using my existing hardware. This includes USB dongles, SIM cards, and a Linux-based server environment. The system will be used for commercial purposes and needs to provide secure, rotating mobile IPs with features like IP rotation, user authentication, and scalability. Key Responsibilities: - Setup and configuration of Squid proxy server software. - Integration of USB dongles or SIM card banks to enable mobile IPs. - Automating IP rotation and managing dynamic IPs. - Securing the system with user authentication and traffic monitoring. - Providing detailed documentation for future maintenance and scalability. Ideal Skills and Experience: - Proven experience in configuring proxy server systems...

    $469 Average bid
    $469 Avg Bid
    60 bids

    I'm seeking a skilled professional to enhance my video intercom system connected to an Asterisk instance on my Linux home server. This project involves integrating the intercom to call Linphone accounts and executing specific actions based on inputs from the software's numeric keypad during a call. Key Tasks: - Configure the intercom to call Linphone accounts. - Implement a system where pressing digits on the software numeric keypad triggers pre-defined bash or Python scripts. (The primary action is to open the gate when a certain digit is pressed by my own API) I have accounts on Linphone and my Asterisk instance is set up. Importantly, I want to keep my Asterisk ports secure and not exposed to the internet. Therefore, the Asterisk should function as a client relative to Linph...

    $165 Average bid
    $165 Avg Bid
    10 bids

    I have a small issue to address. My app is a VoIP iOS application that uses PJSIP to make SIP calls. However, after some updates were made, outgoing calls are working fine, but incoming calls are not functioning properly. When I accept an incoming call, there is no audio. Requirements: Strong experience in iOS development (Swift/Objective-C). Familiarity with pjsip or similar VoIP libraries (SIP, RTP, etc.). Experience with push notifications (PushKit) for VoIP calls. Ability to troubleshoot issues related to audio streams, network switching, and SIP protocols. Experience working with background tasks for VoIP apps. Skills: iOS Development (Swift/Objective-C) VoIP Development (pjsip, SIP) Networking (NAT traversal, network switching) PushKit (for VoIP push notifications) Audio Stream M...

    $521 Average bid
    $521 Avg Bid
    43 bids

    I need a freelancer to setup Free PBX (Asterix) on a Rack Bank cloud server. Key requirements: - Installation of Free PBX (Asterix) on a Linux server - Single server setup - Knowledge of Rack Bank cloud services - Prior experience with Free PBX (Asterix) installations Skills and experience: - Expertise in Linux server management - Familiarity with Free PBX (Asterix) - Cloud service installation experience - Capable of providing a standard configuration without customizations or specific enhancements

    $323 Average bid
    $323 Avg Bid
    26 bids

    I am in need of a customized IVR system for Vicidial Park CALL IVR Function. The IVR needs to capture customer contact information and store it in a database. This system should be able to collect dtmf response saved as number from customers which is a default function in VICIDIAL. Just need to implement that function. Requirements: - Experience with Vicidial Park is highly preferred - Expertise in creating and customizing IVR systems - Skills in database management and data storage The collected customer contact details should be stored in a database for future use. Please note, this project does not require sending the information via email, only storing it in the database.

    $14 Average bid
    $14 Avg Bid
    3 bids

    I'm experiencing ongoing latency and instability issues on my Local Area Network (LAN), and I need a professional to help me investigate the problem. The biggest impact is on the performance of M365 Teams meetings for our internal staff. It’s is very unstable whenever there are multiple internal participants. We have run a WireShark capture over a few days and need a WireShark expert to analyze the captures to find the source of the network latency and instability, and what is causing the issues for Teams meetings. Ideal skills and experience: - Proficient in using WireShark for traffic capture and analysis - Deep understanding of Local Area Networks and TCP, UDP, and ICMP packets - Experience in diagnosing network latency and instability issues - Ability to provide clear and ...

    $111 Average bid
    $111 Avg Bid
    18 bids

    I'm in need of a skilled professional who can set up an Asterisk server for me. This server is intended to manage both alarm-with-voice and alarm-without-voice functionalities. It will facilitate communication between clients through custom XML message exchanges via Asterisk server. Key Requirements: 1. Asterisk Server Configuration: The server should be configured to handle both types of alarms. 2. Real-Time Client Registration: Implement a system for instantaneous registration of clients from a MySQL database. This system should include an authentication mechanism and client status monitoring. 3. Testing Guidance: Provide instructions on how to assess the server's performance using SipSoftphone. Ideal Candidate: The perfect fit for this project is someone who possesses extens...

    $149 Average bid
    $149 Avg Bid
    39 bids

    I'm looking for an expert who can configure an Asterisk server for me. This server will handle both alarm-with-voice and alarm-without-voice, where clients send and receive XML-type messages with each other. The server needs to support real-time registration of clients from a local MySQL database, as I expect to serve a large number of clients. Key Requirements: 1. Configure the Asterisk server for both types of alarms. 2. Implement a feature for real-time registration of clients from a local MySQL database. 3. Provide guidance on how to test the server using SipSoftphone. The ideal candidate should have extensive experience with Asterisk server configuration and a strong understanding of MySQL. Skills in network configuration and VoIP technologies will be highly appreciated. Pleas...

    $161 Average bid
    $161 Avg Bid
    38 bids
    Conmutador de telefonia
    22 hours left
    Verified

    Actualmente en mi empresa utilizamos una terminal de conmutación telefónica las líneas telefónicas externas son provistas por un IPS. Debido a que la terminal de conmutación PBX ya no puede soportar mayor cantidad de extensiones me veré forzado a modernizar a tecnología VOIP quizá utilizando Asterisk en un servidor rocky linux 9 que se encuentra de forma física. Además necesitare un archivo de los comandos utilizados a manera de instructivo ya que se necesita replicar lo mismo en otro edificio.

    $241 Average bid
    $241 Avg Bid
    13 bids

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