Can I try Sheerbit before purchasing?

Yes, you can book a demo through our website. Our team will walk you through the softphone features and capabilities tailored to your business needs before any commitment.

A softphone is a software-based phone that uses VoIP technology like SIP or WebRTC to make voice and video calls over the internet.

Can Sheerbit build white-label softphone apps?

Yes, Sheerbit provides fully customizable white-label softphone applications with branding, UI customization, and app store publishing.

Which platforms are supported?

Softphone apps are supported on Android, iOS, Windows, macOS, and web browsers.

Is the softphone compatible with existing PBX systems?

Yes, it supports integration with Asterisk, FreeSWITCH, Cisco, Avaya, and other SIP-compliant systems.

How secure are softphone communications?

Softphones use TLS, SRTP, and DTLS encryption to ensure secure communication and protect user data.

Does Sheerbit provide analytics and reporting?

Yes, Sheerbit offers analytics including call duration, quality metrics, and usage statistics through dashboards and APIs.

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.

Powered for All Platforms:

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

Platform Compatibility

Supported Codecs

Integration Options

Security Features

Robust API & Authentication

Choose Your Perfect Plan

STARTER

Perfect for small teams starting with VoIP.

PROFESSIONAL

Most Popular — built for growing businesses.

Includes everything in Starter, plus:

ENTERPRISE

Ultimate features for large teams & advanced use.

Includes everything in Starter, plus:

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

Testimonial

Client Success Stories

Tony Camero

"Sheerbit Technologies did a fine job in developing VoIP Softphone App, I will continue to do more work with the Sheerbit Technologies team."

Stephan Bastian

"Great help and delivered a stable app. Sheerbit Technologies has very helpful team, created an great WebRTC application for us."

Belldial

"Great help and delivered a stable app. Sheerbit Technologies has very helpful team, created an great WebRTC application for us. "

Steve

"It was a pleasure working with Kaushik and the rest of the knowledgeable team at Sheerbit. I would highly recommend them for anyone looking for expertise in the VoIP, cellular or mobile application field."

John Bittner

"Exceptional work! Kaushik has demonstrated a high level of expertise in VoIp App development and Kamailio Proxy server, met all deadlines, and communicated effectively throughout the project. Their attention to detail and commitment to delivering quality results truly impressed me."

Hemant Gosain

"Kaushik remediated the project after a slight miscommunication and delivered on his promises. He is an expert on VOIP and does a through job. Highly recommended professional!"

Blogs

Industry-Leading VoIP Softphone Knowledge Center

LiveKit + OpenAI: Building Real-Time AI Conversations (Voice + Video)

16/04/2026

Something fundamental shifted in how humans interact with software the moment AI models learned to speak and listen in real...

LiveKit vs Twilio vs Agora: Which Real-Time Platform Should You Choose in 2026?

14/04/2026

Real-time communication has quietly become the backbone of modern digital products. Whether you are building a telehealth consultation app, launching...

When Should You Use LiveKit for Your Business Decision-making guide for CTOs

11/04/2026

Every technology decision a CTO makes carries two kinds of risk: the risk of choosing the wrong tool, and the...

LiveKit Architecture Deep Dive: SFU, Media Routing, and Scaling

11/04/2026

Real-time communication has become the invisible backbone of modern software. From telehealth appointments to collaborative coding environments and AI-powered voice...

Building Enterprise Call Centers with Asterisk

24/03/2026

Every second counts in customer service. A customer waiting on hold, an agent struggling with outdated tools, a call routed...

Asterisk Integration with CRM: Salesforce, HubSpot, and Zendesk

23/03/2026

The modern business landscape demands seamless integration between communication platforms and customer relationship management systems. Organizations worldwide are recognizing that...

Frequently Asked Questions

Can I create a custom mobile dialer with my company branding?

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.

What makes Sheerbit's WebRTC softphone different?

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.

Is Sheerbit compatible with my existing VoIP/PBX system?

Yes. Sheerbit is SIP-standard compliant and works with Asterisk, FreeSWITCH, 3CX, Twilio, Cisco, Avaya, and any RFC 3261-compatible system.

How secure are calls made through Sheerbit Softphone?

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.

Does the SDK support VoIP push notifications for background calling?

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.

Does the mobile dialer support CallKit and Android Telecom APIs?

Yes. Calls appear on the native lock screen, integrate with Bluetooth/AirPods, and feel exactly like a regular phone call on both platforms.

Can we enable multi-language support for global teams?

Yes. The dialer supports full i18n/l10n including RTL languages like Arabic and Hebrew. It’s been deployed in 20+ languages globally.

How do you handle VoIP push notifications?

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.

Do you offer analytics and call reporting?

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.

What platforms are supported by the VoIP SDK?

iOS 14+, Android 8+, React Native, Flutter, Web (Chrome, Firefox, Safari, Edge), and Electron for desktop.

Can I receive or make calls when the app is in the background or killed state?

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.

Which SDKs or libraries do you use for VoIP functionality?

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.

Can the SDK integrate with our own backend and APIs?

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.