Web softphone development: put a real WebRTC SIP phone inside the application your team already lives in.
Embed in CRMClick-to-callInbound toastHold / transferDevice pickerTURN included
A WebRTC softphone solution is the product shape buyers want when they search embed calling in CRM or browser softphone for contact center. UnifiedPBX.in delivers the UA, the TURN story and the PBX profile as one design.
2026 buying brief
Who this is for
SaaS products that need click-to-call, inbound toasts and hold/transfer inside the app, not a downloadable softphone.
What you get
An embedded phone, a TURN path that works off-LAN, and PBX features the browser is allowed to trigger.
Searches this page answers
embed WebRTC in SaaS, browser softphone, click-to-call widget, SIP.js softphone.
2026 search & AI-search context
2026 buyers search “in-app calling” after a failed library spike. The solution page that ranks names ICE/TURN and the server that answers SIP, not a waveform animation.
Inbound toast + answer from the CRM row is the acceptance test.
Corporate NAT will break you; budget TURN before the launch tweet.
The phone is a component. Auth is your product’s auth.
Solution architecture
Embedded calling
SaaS / CRM UIUser session
Softphone componentSIP.js + call controls
↓
WSS + TURNSignaling and relay
↓
Your PBXSame queues as desk phones
↓
PSTN / AI / other agentsThe rest of the platform
The CRM user id must map 1:1 to the SIP endpoint. Shared extensions are how recordings become a lawsuit.
Browser notification + in-app toast with CRM context.
Guest widget
Website visitors reach a queue without an extension.
Admin
Who may record, who may barge, which device is default.
Resilience
Reconnect after laptop sleep without ghost calls.
FAQ
Questions buyers ask before hiring
Direct answers on scope, stack, rescue vs build, and how to start, structured for search and AI summaries.
Direct answers on scope, stack, rescue vs build, and how to start, structured for search and AI summaries.
Usually ICE/TURN, UDP blocking or asymmetric NAT. We prove the path with browser stats and coturn logs, not only SIP traces.
Yes. Same tenant, same numbering plan, provisioned credentials and TURN, standard in hosted PBX case studies.
Yes. RBAC, hold/transfer, queue login and recording indicators are part of agent panel work.
SIP.js, JsSIP, LiveKit, mediasoup and vendor SDKs depending on tenancy and recording requirements.
Yes. We work from pcaps and SDP: NAT, security groups that open 5060 but not RTP, transcoding, ICE/TURN and REFER/re-INVITE behaviour, not guesswork.
We implement PJSIP/Sofia profiles, digest vs IP auth, OPTIONS keepalives and test matrices your carrier publishes. Legal STIR/SHAKEN attestation is jurisdiction-specific; we implement the technical path your provider supports.
Share the current stack (PBX, CRM, cloud), the failure or goal in one paragraph, peak call volume, carriers, and any deadline. Screenshots, a pcap, or a short Loom beat a 40-page RFP. Use the project brief or email hello@unifiedpbx.in.
Yes. Delivery is remote-first from Delhi with scheduled overlap for EU, UK, US and APAC stand-ups. Production changes use written runbooks, rollback steps and agreed maintenance windows.
Yes. Many engagements begin with a 1–2 week SIP trace review, tenant-isolation audit, or architecture assessment. If the fit is good, scope expands from evidence, not from a generic sales deck.
Founders, CTOs, telecom leads, MSPs and product teams building or fixing UCaaS, CCaaS, CRM+voice, AI voice, or vertical SaaS, not buyers who only need seats on a mass-market suite.
Need this built?
Send the current architecture, call volume, carriers and the workflow you need to automate or productize. Discovery can start from a broken PBX or a blank product brief.