# KHCOLO ## Docs - [KHCOLO: 3CX Phone Systems and Cloud IT for Cambodia](https://doc.khcolo.com/introduction.md): Your trusted IT partner in Cambodia for 3CX phone systems, cloud VPS hosting, managed IT services, and enterprise solutions tailored to local needs. - [Why Choose KHCOLO for Business IT and 3CX in Cambodia](https://doc.khcolo.com/why-khcolo.md): Discover what sets KHCOLO apart: local Cambodian expertise, certified 3CX specialisation, bilingual support, and end-to-end cloud and managed IT services. - [3CX Phone System Overview for Cambodian Businesses](https://doc.khcolo.com/3cx/overview.md): Discover how 3CX transforms business communications in Cambodia with a scalable, software-based IP PBX for voice, video, chat, and CRM integration. - [Step-by-Step Guide to Deploying a 3CX Phone System](https://doc.khcolo.com/3cx/deployment.md): Deploy 3CX on a cloud VPS or on-premise server — covering hardware, installation, firewall ports, and initial configuration for your Cambodia deployment. - [Configure SIP Trunks in 3CX for Cambodia: Full Guide](https://doc.khcolo.com/3cx/sip-trunk.md): Connect 3CX to Cambodian and international SIP providers, set inbound and outbound routing rules, and tune codecs for reliable call quality. - [Call Recording and CRM Integration in 3CX: Setup Guide](https://doc.khcolo.com/3cx/call-recording-crm.md): Enable per-extension call recording with cloud storage sync, and connect 3CX to your CRM for screen pops, automatic call logging, and caller ID lookup. - [Integrating 3CX with Bitrix24 CRM: Full Setup Guide](https://doc.khcolo.com/3cx/bitrix24-integration.md): Connect 3CX to Bitrix24 for click-to-call, automatic call logging, screen pops, and full call history inside your CRM deal and contact cards. - [3CX Cloud Hosting vs On-Premise: Which Is Right for You?](https://doc.khcolo.com/3cx/cloud-vs-onpremise.md): Compare cloud-hosted and on-premise 3CX deployments on cost, management, compliance, and reliability to choose the best option for your Cambodia business. - [Migrating 3CX from On-Premise to Cloud: Step-by-Step](https://doc.khcolo.com/3cx/migration-guide.md): Move 3CX from an on-premise server to a cloud VPS with minimal downtime using this step-by-step backup, restore, and DNS cutover migration guide. - [Cloud Infrastructure in Cambodia — KHCOLO Overview](https://doc.khcolo.com/cloud/overview.md): Explore KHCOLO's cloud services — VPS hosting, cloud servers, hypervisor management, and backup solutions across Singapore and Phnom Penh data centers. - [VPS vs Cloud Server — Differences Explained for Cambodia](https://doc.khcolo.com/cloud/vps-vs-cloud-server.md): Learn the key architectural differences between a VPS and a cloud server, and choose the right option for your business size, budget, and uptime needs. - [How to Choose a Cloud Server in Cambodia — Decision Guide](https://doc.khcolo.com/cloud/choosing-a-cloud-server.md): Assess latency benchmarks, NBC compliance, bilingual support, VoIP CPU sizing, and bandwidth costs to pick the right cloud server for Cambodia. - [Cloud Migration Checklist — Safe Cutover Guide for Cambodia](https://doc.khcolo.com/cloud/migration-checklist.md): Follow KHCOLO's structured pre-flight, cutover, and rollback checklist to safely migrate your servers to the cloud with minimal downtime risk. - [Proxmox VE vs VMware vSphere — Hypervisor Comparison Guide](https://doc.khcolo.com/cloud/proxmox-vs-vmware.md): Compare Proxmox VE and VMware vSphere on licensing, features, LXC container support, and enterprise fit to choose the right hypervisor for your business. - [Cloud Backup Strategy for Cambodia — 3-2-1 Rule Guide](https://doc.khcolo.com/cloud/backup-strategy.md): Implement the 3-2-1 backup rule for your Cambodia cloud environment — covering Veeam, Proxmox Backup Server, AWS S3, Wasabi, and weekly/daily schedules. - [Managed IT Services for Businesses in Cambodia](https://doc.khcolo.com/it-management/managed-it-services.md): KHCOLO's managed IT services cover helpdesk support, server monitoring, endpoint security, and proactive maintenance — with transparent monthly pricing. - [IT Maintenance Checklist for SMEs in Cambodia](https://doc.khcolo.com/it-management/maintenance-checklist.md): A practical IT maintenance schedule for Cambodian SMEs — covering daily server checks, monthly patching, VoIP audits, and quarterly resilience drills. - [Disaster Recovery Planning for Businesses in Cambodia](https://doc.khcolo.com/it-management/disaster-recovery.md): Build a Cambodia-ready disaster recovery plan with risk assessment, BIA, Hot/Warm/Cold site options, and emergency communication runbooks. - [Server Backup Best Practices for Businesses in Cambodia](https://doc.khcolo.com/it-management/backup-best-practices.md): Proven backup practices for Cambodian businesses: quarterly restore testing, AES-256 encryption at rest, TLS 1.3 in transit, and geographic isolation. - [Secure Business Email Hosting Solutions in Cambodia](https://doc.khcolo.com/solutions/business-email.md): Professional email hosting for Cambodian businesses — Alibaba Mail, Zimbra, and cPanel solutions with anti-spam, calendar sync, and unlimited storage. - [GSM/VoIP Gateways for 3CX and Cambodian Mobile Networks](https://doc.khcolo.com/solutions/gsm-voip-gateways.md): Bridge mobile GSM networks to your 3CX phone system with KHCOLO's UC2000-VF gateway — enabling local call termination and bulk SMS from one device. - [Endpoint Security and ESET Antivirus for Businesses](https://doc.khcolo.com/solutions/endpoint-security.md): Protect every device in your organisation with ESET antivirus, enterprise EDR monitoring, and KHCOLO's centralised security management in Cambodia. - [Microsoft 365 Licensing and Implementation in Cambodia](https://doc.khcolo.com/solutions/microsoft-365.md): KHCOLO handles Microsoft 365 licensing, deployment, and identity management for Cambodian businesses — from Teams and Exchange to SharePoint and OneDrive. - [CRM Applications with 3CX Telephony Integration in Cambodia](https://doc.khcolo.com/solutions/crm-applications.md): KHCOLO delivers tailored CRM systems with deep 3CX integration — click-to-call, automatic call logging, screen pops, and workflow automation for your team.