Sipvicious voip işler

PBX telefon centrali uzmanı Genel Nitelikler - İleri Düzey PBX Sistemleri ve Voip Gatewayler hakkında bilgi sahibi. - İleri Düzey FusionPBX, Freeswitch, 3CX telefon centrallerinde uzman. - Sip telefonları provisioning yapabilen. - Tercihen linux scriptleri yazabilen. Atomasyon yapmaya meraklı. - Network bilgisine sahip (TCP/IP, LAN, WAN, VPN) - VoIP proje ve uygulamaları konusunda en az 3 yıl deneyimi olan - WAN uygulamaları ve cihazları, internet, firewall konularında deneyimli. - İngilizce bilen. Teknik döküman takip edebilecek düzeyde ingilizce bilgisine sahip - Evinden çalışabilecek. (Home ofis) - Çözüm odaklı olan, analitik düşünme yeteneği gelişmiş, sorumluluk bilinci yüksek, - Yoğun iş temposuna ayak u...

Unity'de VOIP Sistemini mevcut sunucumuza kurarak çalıştırabilecek, Online olarak VR sesli sohbet yapabilmemizi sağlayacak bir çalışma arkadaşı arıyoruz.

Gelen Voip Çağrıları Cevaplayarak Ses mesajını dinleyip kayıt yapacak ve gelen mesaj karşısında cevap dinletecek. Eş zamanlı 500+ üzeri çağrıyı cevaplayabilmeli C# Dilin de winform uygulama olacak kaynak kod için teklif istiyorum

Merhaba, 40.000 Kullanıcı kapasiteli, eş zamanlı 10.000 çağrıyı kaldırabilecek Asterisk kurulumu için destek verebilecek bu konuda IP Telephony, Call Center, Voip, Network konularında tecrübeli çalışma arkadaşları arıyoruz.

Cihaz, kurulum ve bakım maliyetleri olmaksızın; gelişmiş bir santralin (PBX) sağladığı tüm özellikleri; bulut teknolojisi, “Bulut Santral” veya “Sanal Santral” olarak da bilinen ve VoIP ses hizmeti sağlanan İşteSantral ürünümüz ile sizlere sunuyoruz. Üstün özellikli sanal santral ses hizmeti çözümüne; uygun maliyetle ve aylık ödemelerle sahip olmak istiyorsanız, yeni lokasyonlarınız ile büyümeyi planlıyorsanız, şirket içi görüşmelerinizin ücretlendirilmeyeceği şekilde, bulut santral çözümümüzden faydalanabilirsiniz. Uygun Maliyet İlk yatırım maliyeti, santral bakım ve onarım masrafları olmadan kullanıcı başına aylık ücretlen...

Yusuf Bey Merhaba, STH lisanslı bir telekom firmasında teknik departman müdürüyüm , şöyle bir sorunumuz var daha önceden çalışmakta olduğumuz aculab prosody s üzerine kurulu voip sisteminden asterisk platformuna taşınmaya çalışıyoruz test amaçlı kurduğumuz server üzerinde denemeler yapıyoruz, şu anda çağrılarımızda bir sorun yok istediğimiz şekilde çalışıyor olmasına rağmen dtmf detection sorunumuz var, ne yaptıysak asteriskin dtmfleri yakalamasını bir türlü başaramadık, bu konuda bize yardımcı olma şansınız var mıdır?Teşekkürler.

Hi thepasserby82 Merhaba Ankara'da bir şirketiz.,Bir VoIP-SIP programı geliştirmek istiyoruz. Farklı olarak speech to text ile entegre olacak. Bunun örnek kodları github ta mevcut. Bunu imkan veren en iyi voip open source çözümü olarak asteriks bulduk. Türkiye de biri ile çalışmak bizim için daha avantalı olacaktır. İletişim bilgilerini paylaşırsan daha ayrıntılı bir şekilde konuşabiliriz. İyi çalışmalar. NOT: Bütçe miktarı ve süresi örnek olarak dolduruldu. Mehmet ARSLAN Computer Engineer| Manager | Co-Founder mhmttaa@

Herhangi bir voip yazılımı ile entegre çalışacak, (xlite, voipwise gibi) yüklediğimiz numaralara toplu çağrı atmamızı sağlayacak bir yazılıma ihtiyaç duyuyoruz. Sistem seri şekilde sorunsuz çalışabilmelidir. Acil ihtiyacımız bulunmaktadır. Hangi dille yazıldığı önemli değil. İşine hakim sözünde durabilecek ve gününde teslim edebilecek yazılımcılardan teklif bekliyorum.

Herhangi bir voip yazılımı ile entegre çalışacak, (xlite, voipwise gibi) yüklediğimiz numaralara toplu çağrı atmamızı sağlayacak bir yazılıma ihtiyaç duyuyoruz. Sistem seri şekilde sorunsuz çalışabilmelidir. Acil ihtiyacımız bulunmaktadır. Hangi dille yazıldığı önemli değil. İşine hakim sözünde durabilecek ve gününde teslim edebilecek yazılımcılardan teklif bekliyorum.

Merhaba Benim bir voip softswitch im var. itelbilling kullanıyorum. Bazı hayal edip istediğim özellikler burada mevcut değil. mesela IP PBX , CALL CENTER , SESLİ ANKET , HOTEL , VOD AND DEAMOND , IP TV. Bütün bu sistemin çalışmasını tek ekranda yapabilecek var mı ? portaone gibi bir sistem istiyorum. detaylarını daha fazla anlatacağım

I'm seeking a skilled Python developer to create a script that can facilitate sending and receiving voice calls via Telegram VoIP. The main aim of this project is to integrate the developed script into an existing application. The script should be compatible with Python 3.x.

I am looking for an expert who can help me set up a SIP trunk server using Twilio as the SIP provider. This server will be used for both voice calling and SMS messagi...of both voice and SMS capabilities - Providing recommendations for server security and performance optimization Ideal Candidate: - Extensive experience with SIP trunking, particularly with Twilio - Proficiency in configuring and customizing SIP trunk servers - Proven track record in implementing call management features such as Call Recording, Call Forwarding, and IVR - Strong understanding of VoIP and telecommunication protocols - Familiarity with server security best practices If you are confident in your abilities in this space and can deliver a robust, secure, and reliable SIP trunk server, I would like to hear...

...is a critical project for our organization and I'm looking for an experienced professional to handle it seamlessly. Here's an overview of the key aspects of the project: - Migrate from existing VoIP system to RingCentral including porting existing phone numbers - Ensure all the features we need are properly set up in RingCentral, specifically call forwarding and auto-attendant - Complete the migration with minimal downtime and disruption to our business operations - Provide training to 11-50 employees on how to use the new RingCentral system Ideal skills and experience: - Proven experience in VoIP system migration - In-depth knowledge of RingCentral system and its features, particularly call forwarding and auto-attendant - Strong project management skills to en...

...Provide real-time analytics and reporting tools to monitor performance metrics and track agent productivity. - Ensure the system is scalable to handle varying call volumes. - Provide ongoing technical support and maintenance for the dialer system. **Requirements:** - Proven experience in developing and implementing outgoing predictive dialer systems. - Strong knowledge of telephony systems and VoIP. - Experience with database management and basic CRM integration. - Ability to configure dynamic caller ID and IP whitelisting. - Proficient in managing multiple campaigns and supporting a minimum of 10 representatives. - Excellent problem-solving skills and attention to detail. - Ability to provide ongoing technical support and maintenance. **Preferred Skills:** - Experience with sp...

I'm in need of an Asterisk developer experienced with Asterisk 13. The primary task is to configure the system as a VoIP server for internal communication. Key requirements: - Understand Asterisk 13 well - Strong experience in setting up and configuring VoIP servers The ideal candidate should have: - Proven experience in customizing Asterisk for similar purposes - Good understanding of VoIP technologies and protocols - Ability to work independently and deliver high-quality work on time Please note that the project involves setting up the system, configuring call flows and ensuring it's ready for internal use.

I require an experienced and proficient developer who is familiar with both WebRTC and Asterisk. The objective is to expand the functionality of my current Asterisk setup by integrating it with WebRTC. The specific features to be integrated are: -Voice Calling -Vi...Asterisk. The objective is to expand the functionality of my current Asterisk setup by integrating it with WebRTC. The specific features to be integrated are: -Voice Calling -Video Conferencing This project seeks to enhance the communication capabilities of my Asterisk setup, thus the ideal candidate would have considerable experience managing such integrations in the past. Sound knowledge of VoIP, SIP, and related technologies will be greatly appreciated. An understanding of the Asterisk framework and its API will be...

I'm looking for a freelancer with specific experience in Vegavoip. The main task will be to set up a new Vegavoip system, ensuring it's up and r...be to set up a new Vegavoip system, ensuring it's up and running smoothly. The key features that are an absolute must for this system are call forwarding and call out capabilities. Ideal Skills and Experience: - Proven track record of setting up Vegavoip systems. This is essential for the successful completion of the project. - Familiarity with configuring VoIP providers. While the main focus is on Vegavoip, additional experience with VoIP provider configuration would be an advantage. - Strong understanding of essential features such as call forwarding and call out. The successful candidate will need to ensure these...

https://www.freelancer.com/projects/voip/Kamailio-SIP-Proxy-RTPengine/details

https://www.freelancer.com/projects/voip/Kamailio-SIP-Proxy-RTPengine/details

https://www.freelancer.com/projects/voip/Kamailio-SIP-Proxy-RTPengine/details

https://www.freelancer.com/projects/voip/Kamailio-SIP-Proxy-RTPengine/details

...professional Wikipedia article writer, well-versed in the field of technology, specifically telecom. The articles will focus on three main areas: mobile networks, fiber optics and Voice Over Internet Protocol (VOIP). Key Responsibilities: - Conduct research on each topic to ensure accuracy - Compose engaging and well-researched articles - Adhere to Wikipedia's editorial guidelines and handle any revisions if necessary Ideal Candidate Qualifications: - Proven experience in Wikipedia article writing - Solid knowledge about telecom technology, particular in mobile networks, fiber optics and VOIP - Excellent research and writing skills - Previous experience in telecom-related content creation is a huge plus I am seeking a freelancer who can bring these topics to ...

Looking for flyers for my I.T. Company, advertising residential services (Home VOIP Phones, Wi-Fi (Indoor, Outdoor and Point to Point), Security Cameras, Computer Services and Smart Home Services Must Include: - Company Logo - Website and E-Mail - Visually appealing and easy to read information Requirements: - PDF File required - Sizing: 3.86 x 8.39 inches or 8.39 x 3.86 inches

I'm in need of a consultancy service for integrating Telegram's VoIP calling feature into my web application. This would involve using Node.js and TDLib (Telegram Database Library). The main purpose of this integration is to offer users the ability to make voice calls directly through the platform. Key Requirements: - Implementing Telegram VoIP for seamless voice communication - Focused on making the feature user-friendly - Web-based platform The project's primary goal is to introduce a voice calling feature that is both easy to use and reliable. Hence, your expertise in Node.js and experience with TDLib will be vital. The ideal consultant will understand the nuances of VoIP technology and be able to seamlessly integrate it with our existing web appl...

I'm in need of a consultancy service for integrating Telegram's VoIP calling feature into my web application. This would involve using Node.js and TDLib (Telegram Database Library). The main purpose of this integration is to offer users the ability to make voice calls directly through the platform. Key Requirements: - Implementing Telegram VoIP for seamless voice communication - Focused on making the feature user-friendly - Web-based platform The project's primary goal is to introduce a voice calling feature that is both easy to use and reliable. Hence, your expertise in Node.js and experience with TDLib will be vital. The ideal consultant will understand the nuances of VoIP technology and be able to seamlessly integrate it with our existing web appl...

...informational and aimed towards business professionals. the pages that need creating have to be specifically relevant to us. but they need to include. IT Support Services. Cyber Security Specialist CCTV and Security Creative Design and Ecommerce Solutions IT support services should have sub pages for Microsoft Cloud Services. Wifi and Remote Internet. Remote Monitoring and Patch Management, Voip telephones systems, Hardware and Network Services. Cyber security should include Cyber essentials Certification, Penetration testing, Data protection and backup, Firewalls and Antivirus Creative Design and Ecommerce, should include, sub pages for Branding. Brochure/Marketing Websites, E-commerce and Digital signage and touchscreen displays. Specialist CCTV should have the follow...

I'm looking for a skilled developer to create a comprehensive management platform for a restaurant and cafe. Some of the modules required but not limited to the followings: - [ ] Ecommerce - [ ] CRM an Loyalty System - [ ] VOIP ans SMS integration - [ ] Marketing campaign design - [ ] Mobile & Online Ordering - [ ] POS - [ ] product add-ons when taking orders - [ ] barcode scanners and mobile printers - [ ] customised print designs per store - [ ] multi-tenant - [ ] Table Service, reservation, pr-eorder, pre-payment - [ ] Delivery, In-Store pickup, integration to other delivery platforms - [ ] Staff Management, time sheets - [ ] Digital Menu Management, View the menu on mobile and make order and payment - [ ] Reporting & Analytics - [ ] Kitchen Managem...

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

I am in need of a highly capable and experienced iOS de...and experienced iOS developer with demonstrated experience with the Linphone app. Key responsibilities: - You will be responsible for implementing major modifications to the existing Linphone app. - The focus will be to enhance communication services, so familiarity with VoIP and SIP protocols is necessary. - As I have a set deadline, timely completion is critical. Ideal candidate skills: - Proficiency in iOS development - In-depth knowledge of the Linphone app - Experience in enhancing communication services on VoIP apps - Demonstrable ability to deliver on tight deadlines Your experience in modifying the Linphone app, enhancing communication services and delivering within tight deadlines will be a great asset...

I need the most simple Softphone/SIP app with my logo to use or another reseller voip/phone number provider so we can make calls in/out. I need this for Android, IOS, and PC/Mac. Simple app to call in/out. I need a custom softphone app (cross-platform) developed urgently. The app should be a simple dialer for both incoming and outgoing calls, and should be connected to servers. It's important that the app displays our company logo prominently. Key Requirements: - Development of a cross-platform softphone app - Integration with servers - Basic dialer functionality for both incoming and outgoing calls - Display of our company logo Ideal Skills: - Experience in softphone app development - Proficiency in cross-platform development - Ability to integrate with

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.

I'm in need of a SIP and Asterisk expert to help troubleshoot issues with a SIP interconnect between two companies, focusing purely on voice communication. Key responsibilities include: - Identifying issues within the existing setup - Repairing and configuring the SIP and Asterisk system Ideal skills and experience include: - Proven experience with...expert to help troubleshoot issues with a SIP interconnect between two companies, focusing purely on voice communication. Key responsibilities include: - Identifying issues within the existing setup - Repairing and configuring the SIP and Asterisk system Ideal skills and experience include: - Proven experience with SIP and Asterisk systems - Strong troubleshooting abilities - Understanding of VoIP technologies - Excellent commu...

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. K...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 is VoIP phones. Experience in integrating with VoIP systems is a key requirement for this project. I'm looking for someone who has a strong grasp on SIP protocols and has experience in developing similar systems. The ideal candidate should also be proficient in user-based permissions and VoIP integration. Please provide examples of re...

I'm in need of a professional who can help me connect smartphones to the Yeastar S300 PBX over internet and public ip, without the need for a VPN. Key Requirements: - The Yeastar S300 is located on my local network, and I need to enable access for Phones from remote locations. - The connection must be established over the internet, ensuring a secu...without the need for a VPN. Key Requirements: - The Yeastar S300 is located on my local network, and I need to enable access for Phones from remote locations. - The connection must be established over the internet, ensuring a secure and reliable link between the smartphones and the PBX. Ideal Skills and Experience: - Proficient with Yeastar S300 PBX system and its configuration. - Experienced in VoIP solutions and remote acc...

I am looking for an English-speaking fr...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 services such as Skype or Zoom would be advantageous. This is a performance-based job, offering commissions for successfully rescheduling appointments. The hourly rate will start as low as $1 per hour, with the potential to earn more based on your performance. Please apply only if you are confident in your persuasive skills and customer service ...

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.

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 f...

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.

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...

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 w...

As a rapidly expanding company providing business VOIP services, I'm seeking a professional experienced in selling VOIP solutions to small businesses. I believe that your experience and skills will deliver the results we anticipate. Key requirements: - Deep understanding and experience with VOIP services, particularly with features such as auto attendant, call recording and conference calling. - Proven track record in successfully targeting and selling to small businesses. This project requires a focused and accountable professional who can think strategically about our service offerings and can execute a sales strategy effectively. Your work will play a crucial role in expanding our customer base. If your experience aligns with these requirements, I look for...

We have a VoIP app in flutter, 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. If somebody already worked on this type of feature, bid and connect to show a demo.

I'm searching for experienced professionals in the VoIP/PBX or communication field. The project is tailored towards a new enterprise that will initially have 11-50 users. Ideal Candidate: - Proficient in setting up VoIP/PBX systems - Prior experience in handling internal communication systems - Able to scale systems for growth - Familiarity with providing solutions that are cost-effective for new businesses Key Requirements: - Develop a reliable internal communication system - Ensure seamless functionality for 11-50 users - Set up the system in a way that allows for easy expansion in the future - Provide clear documentation for future maintenance and troubleshooting - Cost-effective solutions will be prioritized

I have Patton Smartnode which gets SIP line in (works) and needs to output to its 4 BRI ports to connect to classic PBX (Avaya IP Office 500). SIP line works BRI Configuration to connect Patton and PBX not, this is where i need help for.

We have a VoIP app in flutter, 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. If somebody already worked on this type of feature, bid and connect to show a demo.

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...

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...

...highly-skilled Asterisk VoIP specialist for a unique project. I require expertise in Asterisk integration, VoIP configuration, and particularly in IVR implementation. KEY REQUIREMENTS: - Asterisk Integration: Full integration set up and testing needs to be completed. - VoIP Configuration: This includes configuring phone lines, extensions, and all essential VoIP functions. - IVR Implementation: The main purpose of this project is the implementation of automated IVR menus. This needs to be user-friendly and functional. The system should be capable of handling less than 50 concurrent calls. IDEAL CANDIDATE: The successful freelancer must have outstanding experience in all mentioned areas with a focus on IVR implementation. Any proven record in developing lo...

As an individual requiring high-level protection for my technological assets, I'm in search of an expert in the field of cybersecurity. This expert will be tasked with securing my VPS, cPanel, VoIP, Open VPN server, and my home WiFi network. here is a video explaining my needs : Key areas of focus should include, but are not limited to: - VPS - cPanel - VoIP - Open VPN server - Home WiFi network Given the critical nature of this project, only applicants with extensive experience in the field of cybersecurity will be considered. Therefore, I encourage all potential freelancers to showcase their past successes and demonstrate their expertise in their application. While this project requires the highest level of proficiency in cybersecurity

I am seeking an experienced Android developer, ideally with a strong background in UI/UX design, to revamp the user interface of my Linphone-based app and integrate a banner advertisement feature. An elegant, modern, and clean design is desirable to enhance user experience. Key requirements for the project include: - Redesign the ex...functions and ensure the redesign doesn't impact the app's performance and stability. - Integrate and properly position banner advertisements into the app while ensuring they do not disrupt user experience. The successful bidder will have a strong portfolio of Android app development, with clear evidence of UI/UX design skills and experience integrating advertisements into apps. A working knowledge of VoIP-based apps like Linphone will a...