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!

De 31,096 opiniones, los clientes califican nuestro VoIP Developers 4.88 de un total de 5 estrellas.
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    20 trabajados encontrados, precios en USD

    I'm in need of a professional who can assist me in efficiently managing customer calls. Currently, I have no system in place, which is leading to missed calls and potential customers slipping through the cracks. My primary goal is to handle a higher volume of calls while maintaining a high level of service. Key aspects of this project include: - Setting up a voicemail system: Implementing a voicemail system that captures and organizes customer messages is crucial. Prior experience in voicemail management is desirable. - Call flow optimization: I need a system that can efficiently route calls and ensure they reach the right person. Any experience with call routing systems would be very beneficial. - Prioritizing urgent calls: Sometimes, urgent calls may come through. Being able to se...

    $318 (Avg Bid)
    $318 Oferta promedio
    10 ofertas
    Custom Call Center Development 6 días left
    VERIFICADO

    I'm looking for an experienced professional who can develop a custom call center with specific features such as the ability to handle both inbound and outbound calls, capture DTMF in live calls, and conduct auto-robot calls. Key Requirements: - Inbound and Outbound Call Handling: The call center needs to be able to efficiently manage both incoming and outgoing calls. This includes routing, call waiting, and call transfer functionalities. - DTMF Capture in Live Calls: A crucial feature I need in the call center is the ability to capture DTMF tones in live calls. This is essential for certain interactive voice response (IVR) systems and automated customer service functions. - Auto-Robot Call Functionality/IVR : The software should be able to execute automated calls without manual inter...

    $546 (Avg Bid)
    $546 Oferta promedio
    13 ofertas

    I have an issue with my VoIP Polycom phone. Whenever I pick up the phone, my internet connection drops. I have a cable internet connection, and the phone is connected via a switch. I've tried restarting the phone and all network equipment, but the problem persists. - I will need someone on site - based in north london N13 Key Responsibilities: - Troubleshoot the issue - determine the root cause of the internet drops when the phone is picked up. - Provide a solution to the issue that allows for uninterrupted internet while using the VoIP phone. Ideal Skills and Experience: - Proven experience with VoIP systems and Polycom phones. - Strong knowledge of network setup and troubleshooting. - Familiarity with cable internet connections and potential interference with VoIP. - Ability to t...

    $86 (Avg Bid)
    $86 Oferta promedio
    6 ofertas
    Kannel Configuration Expert Needed 5 días left
    VERIFICADO

    Looking for a professional who has hands-on experience with Kannel deployment, specifically for enabling SMS services. The projected messaging traffic for this project is moderate, anticipated between 5,000 - 100,000 messages per day. Key Requirements: - Proven experience in deploying and configuring Kannel - Strong understanding of SMS services - Capable of managing moderate messaging traffic Ideal candidates will not only have technical know-how, but can also advise on the best practices and efficient ways to handle such volume of messages on a daily basis.

    $54 (Avg Bid)
    $54 Oferta promedio
    8 ofertas
    I need to send SMS MMS in bulk 4 días left
    VERIFICADO

    Someone who has developed some prerecorded audio call sending system. The idea. is to send hundreds of thousands of calls daily to users, the user receives a voice call that must be listened to as a voicemail with pre-recorded audio. Has anyone created a project like this?

    $486 (Avg Bid)
    $486 Oferta promedio
    60 ofertas
    Kannel SMS Gateway & SIM Box Setup 3 días left
    VERIFICADO

    I'm looking for an expert in setting up a Kannel SMS Gateway with a SIM box. The purpose of this project is to send marketing messages on a large scale of between 1,000 and 5,000 daily. The messages will not be text-only, they will include both images and links as well. Ideal Skills: - Extensive experience with Kannel SMS gateway and SIM box configuration - Understanding of marketing message composition with text, image, and link - Knowledge of Bulk SMS sending Key Requirements: - Ability to send between 1,000 and 5,000 SMS daily - Ensure efficient delivery of all text, image, and link content - Optimize the system while maintaining high deliverability rates Your ability to effectively set this up can make a huge difference in our communication strategy. If these parameters accom...

    $36 (Avg Bid)
    $36 Oferta promedio
    3 ofertas
    Linphone App Customization 4 días left
    VERIFICADO

    We need to customize linphone's windows/macOS/iOS/android apps with regular PBX features, sms,sip Presence,BLF,etc. Needs to be customize with our company logo/colors. Change colors and logos to match our theme. Sleek and professional design. Login screen to accept username and password or scan QR code Incoming and outgoing calls. Call Transfer (Blind and assisted transfer) Hold Call Transfer Call Attended Transfer Call End Call Conference Call (merge the calls) Video calls Presence and IM features Call history Smart contact list, with address book synchronization for smartphones Audio/video conference calls and scheduled meetings Call transfer and multi-call management (pause and resume) One-to-one and multi-participant conversations Intuitive message delivery ...

    $1333 (Avg Bid)
    $1333 Oferta promedio
    67 ofertas
    SIP Inbound Call Reception Issue 3 días left
    VERIFICADO

    My SIP Trunking system is constantly preventing me from receiving inbound calls. It's a constant issue that requires urgent attention. Ideal candidates will possess: - Extensive experience with SIP Trunking - Knowledge in diagnosing and resolving call reception problems - Proficiency in troubleshooting technical issues constantly, not sporadically.

    $161 (Avg Bid)
    $161 Oferta promedio
    14 ofertas
    Verify Caller ID for VOIP 2 días left
    VERIFICADO

    I am in need of a specialist who can trace VOIP phone numbers and verify the caller ID. Key Tasks: - Trace VOIP phone numbers - Verify caller ID - Provide necessary documents for a restraining order

    $496 (Avg Bid)
    $496 Oferta promedio
    22 ofertas

    I'm seeking a skilled network expert to assist with setting up a GRE tunnel on our MikroTik router. The primary goal of this project is to seamlessly connect our multiple remote offices. Key Requirements: - Implementation of a MikroTik GRE tunnel configuration emphasizing on traffic routing - Ensuring optimal connectivity and data transmission between all connected offices Ideal Candidate: - Proficiency in MikroTik router configuration, particularly with GRE tunnels - Solid understanding and experience with network traffic routing - Prior experience with setting up connectivity for remote offices - Ability to ensure uninterrupted data transmission and network availability across multiple locations This is an urgent project, so I'm looking for someone who can start promptly an...

    $18 / hr (Avg Bid)
    $18 / hr Oferta promedio
    7 ofertas

    Estamos à procura de um especialista em Issabel e Asterisk para implementar um sistema de Resposta Vocal Interativa (IVR) na nossa plataforma de servidor Issabel 4.0.0-6. O objetivo deste sistema é realizar entrevistas telefónicas automatizadas onde os respondentes possam responder a perguntas pré-gravadas utilizando o teclado do seu telefone. O sistema deve ser capaz de carregar uma base de contactos para realizar automaticamente as chamadas telefónicas e capturar estas respostas numa base de dados para análise subsequente. Além disso, o sistema IVR deve incluir a funcionalidade de conversão de texto em voz (TTS) para facilitar a criação e atualização de prompts de voz. No entanto, também deve ser...

    $1012 (Avg Bid)
    $1012 Oferta promedio
    4 ofertas

    I am looking for a competent professional with experience in Freepbx and Avaya IP integration. The primary objectives of the project are call routing, call forwarding, and establishing a unified voicemail. What I am looking for: - Experience with Freepbx and Avaya IP office 500 V2 systems - Proven track record with telecommunication technology - Capability to integrate functionalities even with gaps in specific call routing or forwarding options Please note that while some specifics on the call routing and forwarding options are not outlined, I expect freelancers to provide suggestions based on their experience and expertise. I look forward to working with an individual who can make these systems work smoothly together.

    $108 (Avg Bid)
    $108 Oferta promedio
    10 ofertas

    As a client looking to set up a home VoIP solution, I'm seeking guidance from a skilled freelancer experienced with both Raspberry Pi and Asterisk server setup. Key Project Details: - I do not require a full-fledged PBX setup, just a basic VoIP service facilitated through my Raspberry Pi. - The primary feature I'm interested in implementing is voice calling. Required Skills: - Proficiency in configuring an Asterisk server on Raspberry Pi. - Strong understanding of VoIP and related protocols. - Ability to guide and explain the setup process clearly. Your Role: I've tried to set it up but no voice can be heard on the other end. So this task is mainly a trouble shooting job. Your primary role will be to walk me through the setup of Asterisk on my Raspberry Pi, ensuring prop...

    $87 (Avg Bid)
    $87 Oferta promedio
    15 ofertas

    I'm seeking a skilled professional for the setup of a WebDialer recording system to handle both inbound and outbound calls. The primary purpose of this system is for quality assurance, training, and compliance monitoring purposes. Experience in integrating with Customer Relationship Management systems (CRMs) is a must. Preferred Qualifications: - Familiarity with call recording systems - Proven ability in the setup of WebDialer systems - Ability to integrate systems with a CRM - Strong knowledge of compliance monitoring - Proven record in quality assurance Remember, the successful implementation of this project will ultimately help improve our services, aid in employee training, and ensure compliance with relevant regulations. Your expertise will go a long way towards achieving th...

    $115 (Avg Bid)
    $115 Oferta promedio
    9 ofertas
    Customer Service Agent Needed -- 2 19 horas left
    VERIFICADO

    I'm seeking a versatile call agent capable of juggling several tasks. Your daily responsibilities will span from answering inquiries to making outbound calls and taking sales orders. You’ll be primarily dealing with both business and individual customers - hence, excellent communication skills are a must. All-rounders who can handle product details, order status, and customer complaints proficiently will be an ideal fit. This job requires a keen eye for detail, sales and customer service expertise; multitasking proficiency is a must. Previous call center experience will be an advantage.

    $783 (Avg Bid)
    $783 Oferta promedio
    26 ofertas
    Customer Service Agent Needed 19 horas left
    VERIFICADO

    I'm seeking a versatile call agent capable of juggling several tasks. Your daily responsibilities will span from answering inquiries to making outbound calls and taking sales orders. You’ll be primarily dealing with both business and individual customers - hence, excellent communication skills are a must. All-rounders who can handle product details, order status, and customer complaints proficiently will be an ideal fit. This job requires a keen eye for detail, sales and customer service expertise; multitasking proficiency is a must. Previous call center experience will be an advantage.

    $392 (Avg Bid)
    $392 Oferta promedio
    22 ofertas

    I require an expert in Asterisk and FreeSWITCH development, along with experienced system engineering skills. Specifically, I need help with: - Asterisk and FreeSWITCH development - Integrating VoIP - Setting up Call routing and IVR (Interactive Voice Response) - CTI - Skill group base call routing to agents. Apart from these, the implementation of Asterisk and FreeSWITCH clustering as well as Call Center Reporting is required. The technology stack should be Linux, PHP, MySQL along with postgresql and API knowledge. The freelancer should have considerable experience in these to meet the project's specific requirements.

    $14378 (Avg Bid)
    $14378 Oferta promedio
    30 ofertas

    I'm looking for an experienced freelancer to help me set up the SIP locally to connect incoming calls to an AI script I have. This setup has to be done on VICIdial using the QuestBlue SIP. The main objective of this project is to establish a call response system. As someone with a pre-built AI script, I need you to link it to the incoming calls on the VICIdial platform. Your expertise will include, but not be limited to: - Proficiency in VICIdial: You must have previous experience working with this platform. - Familiarity with SIP set-ups: QuestBlue SIP experience would also be a bonus. - AI Integration: Able to connect incoming calls to an AI script. Please ensure these skills align with your capabilities before bidding on this project.

    $155 (Avg Bid)
    $155 Oferta promedio
    33 ofertas

    I currently have enhanced licenses for Cisco CUCM 11.5 and I'm seeking to upgrade to the Flex system within a month. While I've skipped explaining the specific functionalities I'm looking to add with the Flex system, ideally, the prospective freelancer should be well-experienced in transitioning from Cisco CUCM's enhanced licenses to Flex. Desired Skills and Experience: - Proficiency in Cisco CUCM 11.5 licensing and operations - Experience in upgrading to Flex system - Strong understanding of Flex system functionality options - Ability to recommend suite of functionalities to maximize collaboration, mobility and contact center features. - Ability to deliver the project within a month time frame.

    $582 (Avg Bid)
    $582 Oferta promedio
    4 ofertas

    Se requiere una persona con experiencia configurando la libreria de Javascript SIPML5 y asterisk. Tenemos todo instalado y configurado. El softphone web se registra al asterisk, emite y recibe llamadas, pero cuando se atiende la llamada no transmite el audio. El servidor tiene instalado una VPN. Cuando el usuario se conecta a la VPN, entonces funciona el audio de la comunicación pero cuando no se conecta a la VPN entonces vuelve el problema del audio. Se requiere que el softphone funcione sin VPN, solo por internet. Version asterisk 18 OS: Ubuntu Server 14 +++++++++++ A person with experience configuring the SIPML5 and Asterisk Javascript library is required. We have everything installed and configured. The web softphone registers to Asterisk, sends and receives calls, but when th...

    $37 / hr (Avg Bid)
    $37 / hr Oferta promedio
    27 ofertas

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