Works With the Infrastructure You Already Have.
Connect SIP desk phones, softphones, PBX systems, and on-premise gateways directly to Callee. Your team keeps the hardware they know — Callee adds the intelligence on top.
Connect Your Existing Hardware to Callee in 3 Simple Steps.
Check Your Hardware
Most SIP-compliant phones, softphones, and PBX systems work with Callee out of the box. No specialist equipment required — if it supports SIP, it connects to Callee.
Register Your Devices
Enter your Callee SIP credentials into your existing device, softphone, or PBX. No engineers, no new cables, no on-site visits. Setup takes minutes, not days.
Start Calling With Callee
Your existing devices now operate through Callee's cloud platform — with full access to IVR, call routing, AI voice agents, campaigns, and contact center features from day one.
Every Device in Your Office, Supported.
Your Desk Phones. Callee's Intelligence.
Any SIP-compliant desk phone — regardless of brand or model — connects directly to the Callee platform. Keep the hardware your team is already comfortable with and instantly gain access to Callee's full cloud telephony features.
Turn Any Laptop Into a Business Phone.
Register any SIP softphone to Callee and make or receive business calls directly from a laptop or desktop. Perfect for remote and hybrid teams — no physical hardware needed.
Connect Your Phone Lines to the Cloud.
Bring your existing SIP trunks into Callee and route calls through the platform without changing your current phone line setup. Keep your numbers, keep your provider — add Callee on top.
Your PBX, Upgraded With Cloud Intelligence.
Connect your on-premise or hosted PBX directly to Callee via SIP. Internal extensions and routing stay intact — Callee adds IVR, AI, campaigns, and contact center capabilities on top.
The Smartest Upgrade Your Phone System Will Ever Get.
No Disruption
Your team keeps using the devices and workflows they already know. Callee runs in the background — invisibly powerful, immediately impactful.
Zero Hardware Cost
No new phones, no new cables, no installation engineers. Callee connects to what you already have — so your upgrade costs nothing in hardware.
Full Cloud Features, Instantly
The moment your hardware connects to Callee, your entire setup gains IVR, AI voice agents, outbound campaigns, and contact center capabilities — from day one.
Your Existing Setup Is Already Compatible. Let's Prove It.
Most SIP hardware connects to Callee in minutes. Book a demo and we'll walk you through exactly how your current infrastructure fits in — live, with no commitment.