3CX Basic Certification Test 25 Questions and
Answers (2026) | Comprehensive Solutions with
Step-by-Step Rationales | A+ Verified
• What are the tested Hypervisor Platforms for 3CX? -✓✓Microsoft Hyper V (>2008 R2),
VMWare ESXi (>5.0), KVM, Citrux XenServer (>7.0).
• What are the hardware prerequisites for 3CX? -✓✓Extension Count affects Memory,
Call Recording affects HDD size and speed, and VoIP Provider affects Memory (Audio
Proxy).
• What are the 3 types of 3CX licenses? -✓✓Standard (3CX FQDN and SMTP only),
Pro (Queues, Bridges, Reports, CRM, Hotel), Enterprise (Advanced Recording Control,
Customization of Phone logo, Standby License, Failover).
• What is the default port configuration for 3CX? -✓✓Web Server HTTP - Default 5000,
HTTPS - Default 5001, Sip Server - Default 5060, Tunnel - Default 5090.
• What is the purpose of the 3CX Web-Based Install Wizard? -✓✓To choose extension
length, administrator email, and mail server settings.
• What is the purpose of the voicemail feature in 3CX? -✓✓The voicemail feature in 3CX
allows users to leave voice messages when the recipient is unavailable. It can have
different voicemails for different extensions and different languages.
• What are Ring Groups and Paging Groups in 3CX? -✓✓Ring Groups merge multiple
extension numbers into a single number, while Paging Groups merge multiple
extensions into one single number, with all member extensions auto-answering with
one-way audio from the caller to members.
• What is a SIP Trunk? -✓✓Provides Public Switched Telephone Network (PSTN)
access and transport via existing internet lines.
• What is a DID in the context of 3CX? -✓✓DID stands for Direct Inward Dialing. It's
used to route incoming calls to a destination based on the dialed number.
• What are the Outbound Caller ID options in 3CX? -✓✓If you want all extensions to
have the same caller ID, go to SIP Trunk > 'Your Trunk'> Caller ID > Configure
Outbound Caller ID. If you want separate extensions to have different numbers, go to
Extension>Extension>General>Outbound Caller ID.
Answers (2026) | Comprehensive Solutions with
Step-by-Step Rationales | A+ Verified
• What are the tested Hypervisor Platforms for 3CX? -✓✓Microsoft Hyper V (>2008 R2),
VMWare ESXi (>5.0), KVM, Citrux XenServer (>7.0).
• What are the hardware prerequisites for 3CX? -✓✓Extension Count affects Memory,
Call Recording affects HDD size and speed, and VoIP Provider affects Memory (Audio
Proxy).
• What are the 3 types of 3CX licenses? -✓✓Standard (3CX FQDN and SMTP only),
Pro (Queues, Bridges, Reports, CRM, Hotel), Enterprise (Advanced Recording Control,
Customization of Phone logo, Standby License, Failover).
• What is the default port configuration for 3CX? -✓✓Web Server HTTP - Default 5000,
HTTPS - Default 5001, Sip Server - Default 5060, Tunnel - Default 5090.
• What is the purpose of the 3CX Web-Based Install Wizard? -✓✓To choose extension
length, administrator email, and mail server settings.
• What is the purpose of the voicemail feature in 3CX? -✓✓The voicemail feature in 3CX
allows users to leave voice messages when the recipient is unavailable. It can have
different voicemails for different extensions and different languages.
• What are Ring Groups and Paging Groups in 3CX? -✓✓Ring Groups merge multiple
extension numbers into a single number, while Paging Groups merge multiple
extensions into one single number, with all member extensions auto-answering with
one-way audio from the caller to members.
• What is a SIP Trunk? -✓✓Provides Public Switched Telephone Network (PSTN)
access and transport via existing internet lines.
• What is a DID in the context of 3CX? -✓✓DID stands for Direct Inward Dialing. It's
used to route incoming calls to a destination based on the dialed number.
• What are the Outbound Caller ID options in 3CX? -✓✓If you want all extensions to
have the same caller ID, go to SIP Trunk > 'Your Trunk'> Caller ID > Configure
Outbound Caller ID. If you want separate extensions to have different numbers, go to
Extension>Extension>General>Outbound Caller ID.
