Agent Calling

WebRTC Softphone — your agents only need a browser

Agents log in to the CRM and start taking calls — no desk phones, no SIP apps, no VPN. The softphone is built into the agent desktop and works from the office, a branch or home.

Book a Live Demo Talk to an engineer
  • No plugins or installs
  • Auto-answer for dialer calls
  • Transfer & conference
  • Works behind NAT via TURN

Hardware phones don't scale with your team

Every new agent, seat move or work-from-home request means provisioning a phone or a SIP client, opening ports and troubleshooting audio.

A WebRTC softphone moves calling into the browser the agent already uses, with encrypted signalling and media that traverse office firewalls and home routers.

How It Works

How browser calling works

01

Agent logs in

The CRM provisions the agent's WebRTC endpoint automatically — no SIP credentials to type.

02

Secure registration

The browser registers over WSS to OpenSIPS; TURN relays media when networks are restrictive.

03

Calls flow

Dialer calls auto-answer into the agent's headset; manual, transfer and conference calls work from the same bar.

Features

Softphone capabilities

Built into the CRM

The call bar lives inside the agent desktop, so status, call and lead are always in sync.

Transfer & conference

Blind and attended transfers and three-way conferences from the browser.

Auto-answer

Predictive and progressive calls connect straight to the headset with an on-screen popup.

Any network

TURN/STUN handling for office firewalls, home broadband and mobile hotspots.

Encrypted by default

WSS signalling and DTLS-SRTP media; credentials are never exposed to the agent.

Talk to an AI bot

The same WebRTC stack powers browser conversations with our AI voice bots.

Architecture

Browser to carrier

Signalling via secure WebSocket to OpenSIPS, media anchored for NAT traversal, calls bridged on Asterisk.

  1. Agent browser
    WebRTC
  2. OpenSIPS (WSS)
    Registration
  3. TURN / RTP relay
    NAT traversal
  4. Asterisk
    Bridging & recording

Compliance & Security

Secure remote calling

TLS-encrypted signalling (WSS) and SRTP media
No SIP credentials stored on agent devices
Softphone hidden when credentials are rejected
All calls recorded centrally, not on the device
Session ties every call to an authenticated agent
Works without opening inbound ports at home

FAQ

Common questions

Which browsers are supported?+
Current versions of Chrome, Edge and Firefox on desktop. Chrome is recommended for agents.
What bandwidth does an agent need?+
A stable broadband connection with low jitter is more important than raw speed; each call uses well under 100 kbps.
Can agents work from home?+
Yes. TURN relays media when home routers block direct connections, so no VPN is required.
Can we still use desk phones?+
Yes — SIP desk phones and mobile extensions can coexist with WebRTC agents in the same campaigns.
Can website visitors talk to a bot in the browser?+
Yes. Our AI voice bots run in the browser too — try them on the AI Voice Bots page.

Related

Try our AI Voice Bots Custom CRM OpenSIPS

Get Started

Put your agents in the browser

We'll run a live WebRTC call with your network during the demo.

Book a Softphone Demo Get a quote →
+91 98991 52832WhatsApp