Cross-Platform WiFi PBX App

@ominfowave

Hello We are Ominfowave Software Services Pvt. Ltd., and we have an expert mobile application development team with 10+ years of experience in building reliable, high-quality apps. ? Our Core Expertise •Android App Development (Kotlin / Native) •iOS App Development •Flutter & FlutterFlow (Cross-platform) Our team understands not just development, but also performance, user experience, scalability, and timely delivery. ? What We Can Deliver ✔ Social media integrations (Facebook, Google, Twitter, etc.) ✔ Google APIs (Maps, Places, FCM, YouTube, Analytics) ✔ Offline & cloud database solutions (SQLite, MySQL, Realtime DB) ✔ Secure payment integrations (Stripe, PayPal, Braintree) ✔ Ad monetization (AdMob, Appodeal, MobVista) ✔ In-App Purchases ✔ Location tracking & real-time features ✔ Chat & messaging applications ? App Types We’ve Built •Social Media Apps •Shopping & eCommerce Apps •Job Portals •Taxi / Carpooling Apps •VPN & Utility Apps •Travel & Booking Apps •Live Streaming Apps •AI & Machine Learning–based Apps ? Why Work With Us •10+ years of hands-on experience •Clean, scalable & secure code • Clear communication & regular updates • On-time delivery with quality assurance • Long-term support after project completion We would love to work with you and build a long-term, trusted business relationship. Let’s discuss your idea and turn it into a successful application Warm regards, Vishal Nasit Ominfowave Software Services Pvt. Ltd.

@mrresearcher99

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert

@devsonie

Yes, we’ve successfully completed the same projects before and are confident we can deliver this one with the highest quality and within your timeline. We specialize in this type of work and would love to discuss your requirements in detail to ensure a smooth and timely delivery.

@bridgestonetech1

Hi, We can develop a cross-platform mobile PBX app for iOS and Android that lets your team place and receive internal calls entirely over your local Wi-Fi network. The app will support 51–200 extensions, full SIP registration, push notifications, TLS/SRTP security, and a clean, branded interface. Our deliverables: iOS (TestFlight) and Android (APK) apps ready for internal testing Core call features: call forwarding (unconditional, busy, no-answer) and visual voicemail synced locally Flexible architecture to allow future addition of call recording or other PBX features PBX setup documentation or configuration files for Asterisk/FreePBX/3CX integration Complete source code with build instructions Short onboarding session for admins and users Technical approach: Cross-platform framework (React Native or Flutter) for a single codebase Integration with your existing PBX server over SIP Local storage for voicemail with secure sync Optimized UI/UX for smooth call handling on all supported devices Our team has experience building SIP-based mobile apps with push notifications and secure VoIP handling for enterprise environments. We can provide examples of similar projects on request. We’d be happy to discuss timeline, milestones, and initial test builds so your team can start using the app over Wi-Fi as quickly as possible.

@kaustubhbawa123

Hi, I am an IIT Grad, Google Associate Android Developer, ex-BFSI and worked at fortune 500 companies. I will make it a reality for you. As a Mobile App Developer, I can develop a cross-platform mobile application using React Native with Asterisk server-side integration and Firebase Realtime Database backend to handle call forwarding, visual voicemail, and syncing with the PBX system, allowing for 51-200 extensions to be registered without cellular voice or external trunks. Kindly click on the chat button so we can discuss and get started. Will share you my prior projects done and my resume too. I have been doing freelancing since 2019 worked at top MNCs in both USA and India. Lets connect

@MuhammadAnus777

⚠️ IF YOU'RE NOT HAPPY YOU DON’T PAY ⚠️ I can build a secure, Wi-Fi–only mobile PBX solution that supports 51–200 extensions with reliable SIP registration, push notifications, and a clean branded UI on iOS and Android. I’ve worked with Asterisk/FreePBX and SIP stacks, so implementing call forwarding rules (unconditional, busy, no-answer) and visual voicemail with local storage plus PBX sync will be straightforward. I’ll structure the codebase to keep call recording modular for future activation, while ensuring TLS/SRTP encryption and smooth background call handling. I would love to chat about your project! The worst that can happen is you walk away with a free consultation. A few quick questions: Do you already have a PBX server running or should I deploy one? Any preferred framework (Flutter, React Native, native)? Do you need MDM or internal enterprise distribution? What branding assets are available? Regards, Muhammad Anus

@NareshJoshiTech

Hello, I’ve gone through your project details carefully, and I must say it sounds really interesting. I’d love to bring my experience to make it a success. With over 10 years of hands-on experience in web, mobile, and software development, I’ve had the privilege of working with clients from around the world — delivering 1000+ successful projects so far. My team and I are comfortable working with technologies like MEAN, MERN, Flutter, React Native, PHP, Laravel, Python, WordPress, Shopify, AI, Blockchain, CRM, CMS, and more. What truly drives me is solving complex challenges and transforming ideas into reliable, user-friendly products. I always aim for clear communication, transparency, and results that make clients feel confident they chose the right partner. You can review my portfolio here: https://www.freelancer.in/u/NareshJoshiTech I’d really appreciate the chance to discuss your project in detail and explore how we can create something great together. Looking forward to hearing from you. Warm regards, Naresh Joshi

@Mayanks010

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank Sahu

@utsav007pandya

Hello, I hope you’re doing well — I am ready to develop a cross-platform mobile PBX app for iOS and Android that lets your team place and receive internal calls entirely over your local Wi-Fi, supporting 51–200 extensions with secure SIP registration, call forwarding, and visual voicemail. Recently, I built mobile SIP-based PBX solutions integrating with Asterisk and FreePBX, delivering reliable push notifications, TLS/SRTP security, and a clean, branded interface. I also provided full configuration documentation, source code, and guided hand-offs to ensure seamless deployment across multiple devices. Let’s connect so I can set up your apps, configure the PBX, and provide testing builds with complete instructions, ensuring your team can forward calls, pick up voicemails, and manage extensions efficiently over Wi-Fi. Thanks Utsav P

@sumanj555

Hello, I’ve reviewed your project and would be glad to assist you. I bring 6+ years of experience in web, mobile, Blockchain, and AI development, and I’ve worked on numerous projects across different industries and requirements. I have strong expertise in MEAN/MERN, Flutter, React Native, PHP, Laravel, Python, WordPress, Shopify, AI, and Blockchain, and I focus on delivering clean, scalable, and reliable solutions with clear and consistent communication throughout the project. I’d be happy to discuss your requirements and suggest the best approach. Best regards, Suman Joshi

@tejbirbhatia

Hi there! I noticed your need for a mobile PBX application that operates solely over Wi-Fi for internal calls. Your emphasis on call forwarding options and visual voicemail, along with the preference for a scalable codebase for potential future features, shows a focus on functionality and flexibility. In a similar project, I developed a cross-platform communication app for a small business, enabling seamless internal calls and voicemail management. The solution integrated with an existing server, ensuring secure SIP registration and push notifications for incoming calls. I have a question regarding the preferred user interface design for the app. Do you have specific branding guidelines in mind for the interface? Looking forward to discussing how we can bring your vision to life efficiently. Thanks, Tejbir Bhatia

@ahmetTC

Hope you are doing well! Extensive experience exists in developing mobile PBX applications for iOS and Android with full SIP support over local Wi-Fi networks. Previous projects included supporting 50–200 extensions, call forwarding rules, visual voicemail, and secure TLS/SRTP connections while maintaining a branded, clean user interface. Challenges such as push notifications for incoming calls and cross-platform reliability were resolved through optimized mobile frameworks and careful PBX integration, whether with Asterisk, FreePBX, or 3CX servers. Experience includes delivering source code with clear build instructions, providing TestFlight/APK access for testing, and guiding clients through onboarding and admin management. Flexibility was maintained in code design to allow future features like call recording without disrupting core functionality. I know what do I build for you, can complete it to your full satisfaction within your timeline. I am ready for you and waiting here. Thank you.

@tamannarajput18

As a seasoned full-stack developer with a focus on MERN and MEAN stacks, I offer a range of skills that are perfectly aligned with your project requirements. I have extensive experience in mobile app development, particularly on Android and iOS platforms, utilizing technologies such as React Native and Flutter. Aside from my proficiency in cross-platform mobile frameworks, my in-depth understanding of SIP protocols, call handling systems and secure VoIP services makes me the ideal candidate for this project. I have successfully built similar apps in the past, delivering features like visual voicemail storage, call forwarding and SIP registration all while prioritizing security via protocols like TLS/SRTP. Moreover, my expertise does not end at just the app development stage. I'm adept in managing entire projects to ensure smooth transitions, including PBX configuration files or documented steps for easy integration into your existing server.

@indreshpnk

Hello, I understand you need a cross-platform WiFi-based PBX app that enables internal calling over a local network without relying on cellular or external trunks. The goal is to deliver a reliable, secure, and user-friendly communication solution for your team. Here’s what I can provide: • Development of iOS & Android apps with stable SIP registration, push notifications, and seamless call handling over Wi-Fi • Implementation of call forwarding (unconditional, busy, no-answer) and visual voicemail with local storage + PBX sync • Scalable and clean codebase using modern frameworks, ensuring future support for features like call recording I bring over 4+ years of experience in Mobile App Development, SIP, VoIP, and PBX systems, with a strong focus on building scalable and performance-driven communication apps. Just to clarify a few things: • Do you already have a PBX server setup (Asterisk/3CX), or should I configure it from scratch? • Do you have any UI/branding guidelines for the app? Please come to the chat box to discuss more about your project. Best regards Indresh Kushwaha

@karthikresonite

Hello, We have proven expertise in building SIP-based VoIP & PBX-integrated mobile apps with cross-platform delivery (iOS & Android) and secure real-time communication. Our Approach: ✔ Cross-platform app (Flutter/React Native) with SIP over Wi-Fi (TLS/SRTP) ✔ Integration with Asterisk / FreePBX / 3CX or your existing PBX ✔ Stable handling of 50–200 extensions with reliable registration ✔ Push notifications for incoming calls (VoIP push for iOS + FCM for Android) Core Features: • Call forwarding (unconditional, busy, no-answer) • Visual voicemail (local storage + PBX sync) • Contact/extension directory with presence status • Clean, branded UI Architecture Ready for Scale: • Modular codebase allowing future call recording & analytics • Optimized NAT traversal & low-latency audio handling Deliverables: • iOS TestFlight + Android APK builds • PBX setup/config or integration documentation • Full source code + build instructions • Knowledge transfer session for onboarding/admin Our team has handled VoIP reliability, SIP signaling, and real-time media challenges, ensuring seamless in-office communication over Wi-Fi. We can start immediately and define milestones aligned to your rollout. Best regards, Resonite Technologies