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$
USD
I will develop voip or webrtc softphone using linphone, pjsip, jssip, or sipjs
Kaushik Parmar
Level 2
5.0
5.0
About this gig
VoIP & WebRTC Softphone Development | Linphone, PJSIP, SIP.js, JsSIP
Looking for a custom VoIP softphone? I develop and customize Linphone, PJSIP, JsSIP, SIP.js, and WebRTC for mobile (Android, iOS) and web applications, ensuring seamless SIP-based voice and HD video calling.
Key Features:
- White-label Softphone Development (Branding, UI, Logo)
- SIP-based Audio & Video Calls, Call Transfer & Conferencing
- Instant Messaging, File Sharing & Push Notifications
- Secure SIP & RTP Encryption (TLS, SRTP, zRTP)
- Call Handover (WiFi to 4G/5G), Multi-Proxy & IPv6 Support
- Low Bandwidth Optimization for 2G/3G Networks
Customization Options:
- Custom Login, Registration & Call Flow
- Integration with VoIP Servers & PBX Systems
SDKs Used:
- Linphone SDK, PJSIP, SIP.js, JsSIP, WebRTC
- Firebase, ConnectyCube, OneSignal SDK Integration
- Chat using Firebase, Socket.io, XMPP, Agora, Livekit
- Livekit, JitsiMeet, Agora, Ant Media WebRTC SDKs, Mediasoup SFU WebRTC SDKs
Need a VoIP dialer app, SIP softphone, or WebRTC communication platform? Contact me for a free quote today!
How it works
Here are the steps to complete your Basic package project:
- 1
Development I'll develop the app and deliver a working product for your review.
- 2
Final Review I'll deliver the final version of the website or app for your review.
Get to know Kaushik Parmar
Kaushik Parmar
Mobile and VoIP developer
Level 2
- FromIndia
- Member sinceJan 2017
- Avg. response time3 hours
- Last delivery3 months
Languages
Hindi, Gujarati, English
🚀 VoIP Specialist | Expert Flutter, ReactNative, ReactJS, NodeJS, Android & iOS Developer
- With 12+ years of experience, I specialize in VoIP development, WebRTC, and SIP-based mobile & web dialers using WebRTC, Linphone, JSSIP, SIPJS, and PJSip.
- Proficient in ReactJS, NodeJS, NextJS, ExpressJS & Angular for web solutions.
- Successfully delivered 70+ mobile apps in Flutter, ReactNative, Android & iOS.
Whether it's design, development, or project management, I bring quality & innovation to every project. Let's build something amazing! 💡
My Portfolio
FAQ
Which SDK Integration you are providing?
I am providing SDK integration services for Linphone SDK, PJSIP, SIP.js, JsSIP, WebRTC related to SIP , VoIP and WebRTC Softphone Development
Do you provide customization for which platform
I am providing Customization for Android, iOS, Windows, Mac and Web applications in Softphone development.
Can you change Linphone to custom theme?
Yes, I can change Linphone to your customize theme.
Can you integrate REST APIs with Linphone?
Yes, Can integrate REST APIs for Any features like Login , Registration, Balance Check , Recharge , Send/Receive SMS , Block Number , Forward call , Transfer Call etc.
Can you Integrate Payment gateway with Application
Yes
Reviews
27 reviews for this Gig
| (26) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J 
jfbarsocchi
Repeat Client
France
Goog job, like usual
$100-$200
Price
2 days
Duration
Helpful?J jfbarsocchi
Repeat Client
France
Very satisfied of the work. All workers at celloip are good persons, I will ask them for my future projects
$4,000 and above
Price
3 months
Duration
Helpful?S stuartspice
Repeat Client
United Kingdom
Seriously excellent understanding of SIP implementation, PUSHKIT and VoIP in general. Superb.
$200-$400
Price
1 day
Duration
Helpful?S stuartspice
Repeat Client
United Kingdom
Seriously professional and boy do they know their stuff, I mean really great understanding of SIP, PUSHKIT and CALLKIT. A++++++
$600-$800
Price
2 weeks
Duration
Helpful?S stuartspice
Repeat Client
United Kingdom
Always communicative and happy to work on getting the job done. Very recommended. A++++
K 
Seller's Response
Helpful?
Reviews
27 reviews for this Gig
| (26) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J jfbarsocchi
Repeat Client
France
Goog job, like usual
$100-$200
Price
2 days
Duration
Helpful?J jfbarsocchi
Repeat Client
France
Very satisfied of the work. All workers at celloip are good persons, I will ask them for my future projects
$4,000 and above
Price
3 months
Duration
Helpful?S stuartspice
Repeat Client
United Kingdom
Seriously excellent understanding of SIP implementation, PUSHKIT and VoIP in general. Superb.
$200-$400
Price
1 day
Duration
Helpful?S stuartspice
Repeat Client
United Kingdom
Seriously professional and boy do they know their stuff, I mean really great understanding of SIP, PUSHKIT and CALLKIT. A++++++
$600-$800
Price
2 weeks
Duration
Helpful?S stuartspice
Repeat Client
United Kingdom
Always communicative and happy to work on getting the job done. Very recommended. A++++
K Seller's Response
Helpful?
