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 26,273 opiniones, los clientes califican nuestro VoIP Developers 4.82 de un total de 5 estrellas.
Contratar a 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!

De 26,273 opiniones, los clientes califican nuestro VoIP Developers 4.82 de un total de 5 estrellas.
Contratar a VoIP Developers

Filtro

Mis búsquedas recientes
Filtrar por:
Presupuesto
a
a
a
Tipo
Habilidades
Idiomas
    Estado del trabajo
    11 trabajos encontrados

    Dispongo de un switch D-Link DGS-1250-52X y necesito que quede totalmente operativo con una estructura de VLAN con LACP • Configurar un LACP Activo-Activo de 4 puertos que sirva como uplink redundante y balanceado. • Verificar conectividad y desempeño (ping, tabla MAC, pruebas de throughput) asegurando que todo quede documentado para futuras ampliaciones. Considero el trabajo terminado cuando todas las VLAN intercambian tráfico según lo planeado y el grupo LACP muestre agregación estable sin errores.

    $150 Average bid
    $150 Oferta promedio
    17 ofertas

    I run a service center and I’m ready to streamline two key touch-points at once: inbound customer support calls and WhatsApp messaging. I am not working on CRM and ticketing system, so the solution must plug directly into both of those platforms—ideally through secure APIs or webhooks—so every interaction is logged automatically without any manual data entry. I only need straightforward rule-based flows: IVR menus for phone calls, and button- or keyword-driven replies on WhatsApp. Natural-language understanding is not required; speed, reliability, and clear routing rules are the priorities. Please propose the tech stack you’ll use (Twilio, 360dialog, Asterisk, Vonage, Dialogflow CX in “no-NLP” mode, or any other you prefer) along with the integrati...

    $79 Average bid
    $79 Oferta promedio
    30 ofertas

    I need 1,000 outbound calls placed every single day to run a short market-research survey. The goal is strictly to conduct surveys, nothing else, and each call must follow a brief script that I will provide. You will receive a fresh list of phone numbers each morning along with the questionnaire. On every call you should ask the scripted questions, record the answers verbatim, and move on to the next number so the daily quota is met without fail. Any dialer that lets you hit the volume is fine—your own VoIP soft-phone, a predictive system, even a manual setup—as long as you can prove the calls were made. At the end of each day I’ll need two concrete deliverables: • A CSV (or Google Sheet) with the respondent’s answers and time-stamp for each completed su...

    $218 Average bid
    $218 Oferta promedio
    11 ofertas

    I need a reliable virtual receptionist who can handle overflow calls during regular Eastern Standard Time business hours and then keep the line open after hours and throughout the weekend. Every call will be in English and will involve either straightforward customer service inquiries or booking and adjusting appointments in our shared calendar. An intermediate-level background in phone support is ideal. You’ll greet callers with our company name, resolve basic questions from the FAQ script I’ll provide, schedule or reschedule appointments, and log each interaction in the CRM. Whenever an issue falls outside the script, just gather the details and forward the message to me by email or Slack. Expected deliverables • Calls answered within three rings at least 95 % of the t...

    $10 / hr Average bid
    $10 / hr Oferta promedio
    51 ofertas
    Low-KYC UAE High-Volume SIP Trunk
    5 días left
    Verificado

    My operation needs a dependable SIP trunk that can originate and terminate voice traffic to United Arab Emirates destinations while keeping KYC requirements to the absolute minimum—ideally none. I am open to unlicensed wholesale routes as long as they deliver consistent quality and uptime. The trunk must comfortably handle tens of thousands of voice minutes per month, with enough concurrent channels to prevent congestion. Competitive per-minute rates, clean CLI presentation, and stable routing are critical. Please indicate whether you offer SIP registration or IP authentication, the codecs you support (G.711, G.729, etc.), and any fair-use or traffic restrictions. Deliverables • Active SIP credentials or IPs ready for testing • Current rate sheet and payment terms &bu...

    $50 Average bid
    $50 Oferta promedio
    1 ofertas
    Android-iOS VOIP Voice Call App
    4 días left
    Verificado

    We are currently working on our mobile application, GCM Dialer, which handles both SIM and SIP calls. We have successfully implemented the conference screen for the SIM and SIP merge option, but we are encountering an issue where voice is not being exchanged between all parties. Below is the scenario we are testing: - User-1 has the GCM Dialer app installed and set as the default dialer. - User-2 calls User-1 via SIM, and they can exchange voice successfully. - User-3 then calls User-1 via SIP. User-1 answers, which puts User-2 on hold. User-3 and User-1 can exchange voice successfully. - User-1 clicks the "Merge" button, and all three parties are brought into one call screen. The issue is that while User-1 can hear and speak to both User-3 and User-2, User-2 and User-3 cannot...

    $138 Average bid
    $138 Oferta promedio
    33 ofertas

    I’m building a remote customer-care line for the Turkish market and need a fluent representative who can confidently handle Telefon, E-posta and Canlı sohbet traffic. What matters most to me is detaylı bilgi verme: every caller or writer should leave with complete, crystal-clear answers even if that takes a bit more time. You’ll log in to our VoIP softphone for calls, reply to messages through our help-desk inbox, and stay present in the website’s live-chat widget during your shift. I’ll supply product sheets, reply templates and escalation contacts; you’ll turn them into friendly, accurate Turkish responses. English reading skills are a plus for internal notes, but all customer-facing language is Turkish. The schedule is flexible and there’s no fixed ...

    $1065 Average bid
    $1065 Oferta promedio
    34 ofertas

    I need a detail-oriented Indian virtual assistant to place follow-up calls to customers who have already interacted with our sales team. These are not cold calls; the relationship is warm, and the sole purpose of each conversation is to gather feedback—specifically, suggestions for improvement on our product and overall service experience. You will receive a daily call list, a short call script, and access to our VoIP line plus a simple Google Sheet for logging results. After every conversation, note the customer’s suggestions, any pain points mentioned, and their overall sentiment. At the end of each day I expect a concise summary highlighting common themes and any urgent issues that require immediate attention. Key expectations • Confident, clear English with an Indian...

    $425 Average bid
    $425 Oferta promedio
    10 ofertas
    Android UAE Local Calling Setup
    3 días left
    Verificado

    I need a working UAE local number that lets me place and receive calls from my Android phone exactly as if I were inside the country. Linkus is the reference point, yet I’m open to any SIP softphone or cloud-PBX solution that delivers equal or better results. Voice quality must be stable on both Wi-Fi and 4G, and the same local caller ID has to appear to the person I’m calling. SMS integration is essential—I must be able to send and receive texts on the very same UAE number through the chosen app or an associated API. Acceptable solutions may involve: • Provisioning a UAE DID, SIP trunk or virtual number. • Full configuration on an Android softphone (e.g., Linkus, Zoiper, Grandstream Wave, etc.). • Demonstrated test call and SMS exchange showing local...

    $127 Average bid
    $127 Oferta promedio
    32 ofertas

    Akşam 17:00 – sabah 05:00 vardiyasında, iki ayrı telefon hattıma gelen aramaları yalnızca Türkçe olarak karşılayacak deneyimli bir bayan sekreter arıyorum. İşin ana sorumluluğu, arayanları kibarca karşılayıp ilgili bilgileri alarak bana iletmek; bunun dışında toplantı planlama veya e-posta yönetimi beklemiyorum. Çağrılar sanal bir santral (VoIP) üzerinden size yönlendirilecek, bu nedenle güçlü ve kesintisiz bir internet bağlantınızın olması şart. Her aramanın sonunda kısa bir notu CRM’ime veya WhatsApp üzerinden iletmenizi rica edeceğim; böylece gece boyunca oluşan talepleri sabah hızlıca görebilirim. Sürekli gece çalışmaya uygun olduğunuzu, daha önceki benzer deneyimlerinizi ve kullanacağı...

    $15 Average bid
    $15 Oferta promedio
    2 ofertas

    I need my Linux server’s Goolgle SMTP to relay outbound incoming mail through Google Workspace over port 587. The basic ports are open but the SMTP handshake still fails, so I’m looking for someone to: • adjust the Exim configuration to authenticate against my Google Workspace account (STARTTLS, AUTH PLAIN/LOGIN) • add any required certificates, CA bundles, or OAuth-related settings so that Google accepts the connection • send a couple of live test messages to prove delivery, making sure the headers show they passed through Google’s servers *need 587 TLS mail on server - 25 and 446 port are close our server by DC, can you setup *Google TLS for server - incoming and outgoing mail setup *currentlly our server are not sending mail any notification t...

    $16 Average bid
    $16 Oferta promedio
    23 ofertas

    Artículos recomendados solo para ti