WebRTC Softphone Development Services
Revolutionize the way your team connects with Sheerbit’s custom SIP and WebRTC softphone solutions. Designed for modern business needs, our solutions offer crystal-clear voice, video calls, and secure messaging from any device.
Whether you’re managing a remote team or running a call center, Sheerbit’s softphones deliver low latency, high reliability, and seamless integration with your VoIP setup.
Product Overview
Introducing Sheerbit’s Custom SIP Softphone, a fully customizable cross platform VoIP solution offering HD voice and video, secure instant messaging, and advanced call controls. With enterprise grade encryption, aha level provisioning, and seamless integration across major PBX systems and WebRTC, it empowers telcos, call centers, and businesses to deploy branded softphone apps across mobile, desktop, and web. Backed by push notifications, call recording, and an intuitive QR provisioning setup.
Cross Platform Compatibility
Built on SIP and WebRTC technology, the softphone delivers a unified experience across Android, iOS, Windows, Mac, and Web. No need for platform specific apps.
Real Time Messaging and Encryption
Offers instant messaging with TLS and SRTP encryption for secure, private communication that meets enterprise security standards.
High Definition Voice and Video Calling
Supports advanced codecs like Opus and G722 to ensure HD audio and crystal clear video, making it perfect for professional communication.
Fast VoIP Push Notifications
Stay reachable even when the app is in the background. Push notifications ensure no calls are missed while preserving battery life.
Complete Call Management Suite
Includes features such as call transfer, forwarding, conferencing, recording, parking, waiting, pickup, and call history for complete control and convenience.
Enterprise Grade Customization and White Labeling
Fully customizable interface and white label options with support for QR code provisioning. Ideal for telecom operators and enterprises.
Technical Specifications
VoIP Protocol Support
- SIP (Session Initiation Protocol) - Full RFC 3261 compliance
- SRTP & ZRTP - Secure real-time transport protocols
- WebRTC - Browser-based real-time communication
Platform Compatibility
- Desktop Softphone Download: Windows 10/11
- Mobile Platforms: iOS 13+, Android 8.0+
- Web Browsers: Chrome, Firefox, Safari, Edge (latest versions)
Supported Codecs
- Audio: G729, G711u, OPUS, G711a
- Video: H.264, H.265/HEVC, VP8, VP9
Integration Options
- PBX Systems: Asterisk, FreeSWITCH, 3CX, Cisco, Avaya, Teams
- APIs: RESTful API, WebSocket support, OAuth 2.0 authentication
Security Features
- Encryption: TLS 1.3, SRTP with AES-256, DTLS for WebRTC
- Authentication: SIP digest authentication, OAuth 2.0
Robust API & Authentication
- REST & WebSocket APIs: Real-time integration with external
- OAuth 2.0 – Secure and token-based authentication
Choose Your Perfect Plan
STARTER
Perfect for small teams starting with VoIP.
- Manual login with email/username
- Dialpad with incall controls (mute, hold, transfer)
- Call forwarding & call history search
- Access phone contacts
- Secure SIP over WSS
- SRTP audio encryption with DTLS
- G729, G711u, OPUS codecs supported
- Admin panel for user management
- Logout, reprovision, and basic app settings
- Simple & reliable softphone functionality
PROFESSIONAL
Most Popular — built for growing businesses.
Includes everything in Starter, plus:
- Login via QR code & account creation
- VoIP push notifications (even in background)
- Call waiting, call recording & voicemail delete
- One-to-one chat with emoji, edit/delete, reply/forward
- One-to-one audio calls and SMS
- Enterprise + tenant management portal
- Contact sorting options & ringtones
- Call data records (CDR) with audit logs
- Video codecs: VP8, H.264
- Enhanced app setup with advanced user settings
ENTERPRISE
Ultimate features for large teams & advanced use.
Includes everything in Starter, plus:
- Multi-language support & biometric login
- OTP/email login + Google sign-in
- Payment gateway integration
- Video/audio conference + group chat
- File, location & contact sharing
- End-to-end encryption + schedule messages/SMS
- Usage stats (call count, talk time) + call statistics
- Support ticket system built-in
- Dark/Light mode theme options
- All plans include free setup, 99.99% uptime SLA, automatic updates
Why Our WebRTC SoftPhone Stands Out
All in one VoIP softphone with audio, video, and messaging
Enterprise level encryption with TLS and SRTP
Works across desktop, mobile, and web platforms
Efficient push notifications for background call handling
Customizable UI and white label capabilities
Fully integrated with major SIP server technologies
Multi-Mode Connectivity
Seamless integration with
- IP-PBX
- Call Center Platforms
- Class 5 Softswitch
- Seamless integration with
- UCaaS Platforms
Testimonial
Client Success Stories
Blogs
Industry-Leading VoIP Softphone Knowledge Center
FAQ
Frequently Asked Questions
Yes. Sheerbit delivers fully white-labeled mobile dialers with your logo, colors, and UI. The app is published under your brand on the App Store and Google Play with no mention of Sheerbit.
It's SDK-first, with sub-200ms call setup, adaptive codec switching, native CallKit and Android Telecom integration, background/killed-state calling, and built-in analytics hooks.
Yes. Sheerbit is SIP-standard compliant and works with Asterisk, FreeSWITCH, 3CX, Twilio, Cisco, Avaya, and any RFC 3261-compatible system.
All calls use SRTP for media encryption, TLS 1.3 for signaling, and DTLS-SRTP for WebRTC paths. It's compatible with HIPAA, GDPR, and SOC 2 deployment architectures.
Yes. It uses Apple PushKit on iOS and Firebase FCM on Android to wake the app and ring even when it's been force-closed.
Yes. Calls appear on the native lock screen, integrate with Bluetooth/AirPods, and feel exactly like a regular phone call on both platforms.
es. The dialer supports full i18n/l10n including RTL languages like Arabic and Hebrew. It's been deployed in 20+ languages globally.
The SDK registers a push token on launch. When a call comes in, your PBX triggers Sheerbit's push relay, which wakes the device and presents the native call UI automatically.
Yes. You get call duration, MOS scores, jitter, packet loss, push delivery latency, and more — via a dashboard or API export to your own data warehouse.
iOS 14+, Android 8+, React Native, Flutter, Web (Chrome, Firefox, Safari, Edge), and Electron for desktop.
Yes. VoIP push wakes the app for incoming calls even when killed. Active calls continue in the background when you switch apps or lock the screen.
iOS uses Swift with PushKit, CallKit, and Google's libwebrtc. Android uses Kotlin with the Telecom API and FCM. React Native and Flutter wrappers are also available.
Yes. The SDK exposes event callbacks at every call stage (ring, answer, hold, end) that you can map to your own REST or GraphQL APIs, CRM, or any third-party tool.
