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 25,430 reviews, clients rate our VoIP Developers 4.82 out of 5 stars.
Hire VoIP Developers
I need a webrtc to sip gateway to be implemented so I can connected some webrtc softphones (asterisk webrtc softphones on our Odoo CRM) to twilio sip domain
I have 2 fusionpbx servers (A & B), server A is a cloud server and server B is a local server connected to local IP phones. I want to send calls from cloud to local although my ISP blocks port forwarding so I don't have a choice other than make a tunnel between these 2 servers either through FusionPBX settings which I don't know or through OpenVPN tunnel, so I want a solution that can handle a big quantity of calls.
I am looking for a developer to create a SIP Softphone that is compatible with Android operating systems. The main requirement of the Softphone is to make phone calls. I should be able receive inbound calls and read any dtmf tones Ideal skills and experience for this job include: - Experience with SIP Softphone development - Strong knowledge of Android operating system - Experience with VoIP and telecommunications - Familiarity with SIP protocol - Strong attention to detail and ability to deliver high-quality work - Excellent communication skills to ensure project success.
I am looking for a freelancer who can help me with my FreePBX Dynamic Routing project. My current setup is a Single Server. I need a developer who can set up a mySQL database to capture caller inputs in order to enable dynamic routing. I require 2-4 different routing options. The contractor will only be able to access the system through me I don't have remote access. Also, the person will need to walk me through each step of development and implementation. Ideal skills and experience for this job include: - Strong experience with FreePBX and mySQL - Knowledge of dynamic routing - Ability to create customizations and integrations when necessary - Excellent communication skills and ability to work independently
I am looking for a skilled developer to create a program that integrates my Fritzbox VoIP calls with a conversational AI chatbot. The goal is to enable voice calls to be converted to text, send the text to a ChatGPT model trained with knowledge about my company, generate a response, convert the response text to audio using Google Text-to-Speech API, and stream the audio file as a reply through my Fritzbox. The workflow of the program should be as follows: Receive incoming VoIP call on the Fritzbox. Convert the voice call to text using a suitable speech-to-text engine like Google. Send the text to a ChatGPT model that has been trained with information specific to my company. Generate a response from the ChatGPT model based on the input text. Convert the response text to audio using Google ...
I am looking for an experienced Asterisk API developer to create an Asterisk Webhook API. The developer should have extensive expertise with Asterisk and be able to develop the API using an open source programming language. The API must include functionality for call control, call recording, and voicemail management. We are open to suggestions for the programming language and frameworks used to create the API, however, it must be versatile and reliable. We expect comprehensive documentation for the API as well as ongoing support to ensure it functions properly. Thank you for your time and we look forward to your proposal.
I am looking for an experienced Android developer who is proficient in Ionic and has a strong background in VoIP development. The project involves resolving an issue with an existing SIP VoIP app that keeps shutting down randomly. Ideal Skills and Experience: - Proficient in Android and Ionic development - Strong experience in VoIP app development and troubleshooting - Knowledge of SIP VoIP protocols - Familiarity with debugging tools and techniques - Excellent problem-solving skills Key Requirements: - Resolve the issue of the app shutting down randomly - Ensure the app is stable and reliable - Maintain the existing features of the app, including call recording and conference calling - Implement any necessary updates or improvements If you have the skills and experience needed to tack...
I just installed Vici Dial on a Server, I have also Magnus Billing on an another Server which means I want now to make auto dailer so I fixed Vici Dial but I have never heard about this before so now need someone who can help me just to open users or what ever is needed to configure it.
I am looking for an experienced Kamailio administrator to help configure my Kamailio server according to my desired specifications. The current setup of my server is highly customized and requires general configuration assistance. Through this project, I am looking for someone to fine-tune the settings, features and modules to ensure that it operates with optimal efficiency. Communication between us will be done primarily via instant messaging tools such as Slack or Skype. I'm comfortable with either option. I'm open to hearing any additional suggestions or recommendations you may have that could improve the setup of my server. With your experience and expertise, my Kamailio server is sure to be in peak operating condition.
Hello freelancers, I am currently looking for a highly skilled individual with extensive experience in working with Quectel M35 modems. I have a SMS marketing machine that is experiencing an issue where the majority of its modems are being recognized as "unregistered," despite the fact that the modem chips themselves are in good condition. I need someone who can thoroughly analyze the modems and identify the root cause of this problem. Your expertise in troubleshooting and resolving issues related to Quectel M35 modems will be crucial in getting this machine back to its optimal performance. Responsibilities: Investigate and diagnose the "unregistered" issue with the Quectel M35 modems in the SMS marketing machine. Identify any hardware or software-related factors th...
This would be to develop and install a small call flow that runs on TWILIO to screen calls. YOU Must know TWILIO and have used it. Integrates with Google Contacts API and Pushover notifications. you should have experience building call flows, databases, webforms/pages etc... this call flow will answer the call if the caller is in the subscribers google contacts # list, you will send the call to a second # if they are NOT in the google contacts # list, you will ask the caller to say their name and company name you will record that and transcribe it you will send the transcription via pushover to the subscriber you will the call the subscriber at a different number and play the info recorded if they take the call you will connect the call if they decline the call, you will send it to a d...
I am looking for a freelance IOS developer to create a SIP phone app for my existing business. The app needs to connect to my FusionPBX server, which is already set up. My ideal candidate would have experience in developing IOS SIP phone apps and be familiar with the FusionPBX system. The user interface customization required is moderate. I would like the app to have shared call appearances feature and a clean, user-friendly design. Key requirements: - IOS SIP phone app development experience - Familiarity with FusionPBX system - Moderate level of user interface customization - SHARED CALL APPERANCES - MULTIPLE REGISTRATIONS/EXTENSIONS HANDLED IN THE APP - Clean and user-friendly design. - FREESWITCH AND FUSION PBX EXPERIENCE.
I am looking for a person who can install and configure a SIP client(preferably PJSIP or any other) on my Raspberry Pi board, then install a Asterisk Server on a Linux computer that is on the same nextwork. After installation, configure both to talk to a VoIP SIP phone which is on the same network. Also confgigure the PJSIP client in listen only mode
Hello, I am looking for an experienced freelancer to create a virtual phone call center using Asterisk and outbound and inbound calling services. Our organization needs a reliable, efficient and cost-effective solution to provide customer support services. The ideal candidate should have extensive experience with these technologies and must demonstrate that capability through the workload provided. Examples of previous work will be an asset. We will need them to provide a detailed proposal of your plan for the project. This system must support outbound and inbound call services, ensuring that our customers always have a friendly voice ready to answer their queries. We need a reliable and easy to use system that can handle a variety of inbound and outbound calling features such as: IVR me...
Hello! We are an international company Zorra-Telecom, providing telecommunication solutions all over Eurasia, Latin America and Europe (). Currently we are expanding our network and looking for a Branch director or Company Partner in Sri Lanka for a working project of 1 year or more. Work within the project takes no more than 4 hours per week. You're a perfect match if: 1. You/your friends/relatives own a local Sri Lankan company OR you're in process of setting up your business 2. You're willing to increase the income of your company 3. You're looking for a partnerships 4. You're a great communicator and get along with people easily Responsibilities: - Establish communication with major telecommunications companies in Sri Lanka (SLT/Dialog/Mobitel) - Solve...
- Install fusionpbx - Setup Inbound/outbound SIP trunks - Setup 3 extns - Test softphones - Delivery
Make outbound phone calls to customers B2B to provide assistance and support and look if they have any new requirement of Machinery and following which you can pass on the details to us to take it forward. We will provide you the list of customers. English may not be compulsory as many customers may prefer Marathi & Hindi. Looking forward to work with you. Cheers !
I am in need of someone to configure the advanced version of an Avaya IP Office system for my business. The specific features of the Avaya IP Office I am looking for a person those who can review and fix the Call Manager through SIP lines. There will be 1-10 users utilizing the Avaya IP Office system. I am seeking someone experienced in working with the Avaya IP Office who has a well-rounded knowledge of its features and capabilities. Please provide information regarding your experience and expertise with Avaya IP Office when contacting me. Thank you for your time.
I am looking for an experienced AVAYA IP Office 500 V2 IP PBX troubleshooter who can help me with the following: - Troubleshoot the non-functional IP PBX system - Resolve the SD card problem causing extensions to not register - Provide solutions to fix the full SD card issue - Assist with creating a backup of system configuration and data - Recommend best practices for system maintenance and backup Skills and Experience Required: - Proven experience with troubleshooting AVAYA IP Office 500 V2 IP PBX systems - Expertise in resolving SD card issues and non-functional IP PBX systems - Knowledge of system maintenance and backup procedures - Familiarity with AVAYA IP Office 500 V2 IP PBX system configuration and data backup If you have the skills and experience required, please apply...
I am looking for a freelancer who can help me install my Cisco CP-8841 phone without the use of Cisco Unified Communication Manager. Here are the details of my project: Hardware: - I already have the CP-8841 phone Installation experience: - I have no previous experience with installing Cisco phones Setup requirements: - I require a custom setup and configuration for my phone Ideal skills and experience: - Experience in Cisco phone installation and configuration - Knowledge of VoIP systems and protocols - Familiarity with SIP and H.323 protocols - Ability to troubleshoot and resolve technical issues - Excellent communication skills to ensure clear and effective communication throughout the project.
I am seeking a FreeSWITCH or Asterisk expert to help me set up a new enterprise. The ideal freelancer should have prior experience in this area. The project requires call routing and forwarding features to be implemented. Other functionalities such as IVR and voicemail, as well as conference calling and recording may also be required. Please provide your experience in this field in your application. Automation will be required for this as well. I basically want people to go to my website, sign up, and get started with processing calls. Thank you.