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3CX is a software-based IP PBX (Private Branch Exchange) that replaces aging hardware phone systems with a modern, fully managed communications platform. Running on Debian Linux or Windows Server, 3CX unifies voice calls, video conferencing, live chat, and CRM data into a single interface — accessible from the office, at home, or on the go. KHCOLO deploys and supports 3CX for businesses across Cambodia, helping organizations of every size move away from costly, inflexible legacy systems and into a communication environment that scales with them.

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Who Is 3CX For?

3CX is designed for any business that depends on reliable phone communication — from small teams handling customer inquiries to large enterprises managing multi-site call centers. If your organization needs professional call handling, remote work support, or tighter integration between your phones and your CRM, 3CX delivers all of that without the overhead of proprietary hardware.

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Key Features

  • Mobile Apps (iOS & Android) — Your extension travels with you. Make and receive calls on your business number from any smartphone.
  • Unified Communications — Voice, video meetings, team chat, and presence indicators in one platform.
  • Call Queues & Digital Receptionists — Route callers intelligently with queue strategies and automated attendants.
  • CRM Integration — Screen pops, click-to-call, and automatic call logging for Bitrix24, Salesforce, HubSpot, and more.
  • Web-Based Management Console — Administer users, extensions, and call flows entirely through a browser — no desktop software required.
  • Automatic Updates — 3CX handles its own software updates, reducing administrative overhead.

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3CX vs Traditional PBX

The table below highlights how 3CX compares to a conventional hardware-based PBX system across the dimensions that matter most to your business.

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KHCOLO & 3CX

KHCOLO specializes in 3CX deployment for the Cambodian market, including hands-on installation, SIP trunk configuration with local carriers, and ongoing managed support. KHCOLO has also conducted specialized training on VoIP on the Cloud: 3CX Server on Alibaba Cloud, bringing cloud-hosted telephony expertise directly to Cambodian businesses.

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Get Started

Deploy 3CX

Follow the step-by-step deployment guide to get your 3CX server running on a cloud VPS or on-premise hardware.

Configure SIP Trunks

Connect 3CX to local Cambodian carriers or international SIP providers and configure inbound and outbound call routing.