3CX Academy Advanced Certification Exam
2025/2026 Complete Questions with Verified
Answers
Introduction:
This document contains the full set of questions and verified
answers for the 3CX Academy Advanced Certification Exam for the
academic year 2025–2026. It covers topics such as SIP trunk
configuration, call routing, firewall and security settings,
troubleshooting with Wireshark, and the use of 3CX features
including SBC, Call Flow Designer, and CRM integration. The
material provides a complete preparation resource aligned with the
official 3CX certification requirements.
,Exam Questions and Answers:
If you want to check 3CX routing of a call then only a Wireshark
capture is needed, --- correct answer ---False
Knowing only the FQDN/port of 3CX and the MAC address of a
phone I could guess its provisioning URL. --- correct answer ---
False
An outbound call is routed through the VoIP Provider. This "Route"
of the "Outbound Rule" has "Strip Digits" set as 0 and has no values
in the "Prepend" field. A user dials 004433272020. 3CX will send
the call to the provider exactly as dialed --- correct answer ---True
You can use the same VoIP Provider in all of the Outgoing Routes of
a rule --- correct answer ---True
If you want to decode audio in wireshark without any plugins, your
calls will need to be using either G711A or G711U --- correct answer
---True
If you want to check the internal PBX routing of a call, the most
reliable way is through the use of the Binary Log Viewer, or which
you must know some information about the call you are
,investigating, like the Caller ID, the time of the call, etc. --- correct
answer ---True
Assume the following scenario: 3CX is connected via a site-to-site
VPN with two different buildings where remote phones have been
provisioned. 3CX is on network 192.168.9.xxx, Phones on location A
are on network 192.168.3.xxx, Phones on location B are on network
192.168.8.xxx. When a call is established, between an extension on
remote location A to an extension to remote location B, by default
3CX will proxy the SIP and audio traffic and send it to the
extensions --- correct answer ---True
Assume the following scenario: 2 Phone Systems bridged over a
site-to-site VPN connection. Phone system A on network
192.168.9.xxx, Phone System B on network 192.168.3.xxx. The
options "Supports Re-Invite" and "Supports Re-places" are enabled
on the bridge settings. When a call is established between an
extension from PBX A to an extension behind PBX B, the audio will
be exchanged directly between the 2 extensions. --- correct answer
---False
When an established call from your local extension to an external
number is terminated from your IP Phone you should see a BYE
being send in from the Provider / PSTN gateway, towards your PBX
IP address in wireshark --- correct answer ---False
, When 3CX has been installed without an FQDN from 3CX and in
split DNS mode, the DNS server must not be installed on the same
machine as the phone system --- correct answer ---True
A TLS certificate and key will have to be imported into 3CX so taht
SRTP can be used. --- correct answer ---False
You cannot create multiple CID "Inbound Rules" and associate them
with different SIP Trunks you have in 3CX. --- correct answer ---
False
The 3CX SIP port should be filtered by firewall ACL rules to
maximize security and allow only trusted IPs to reach it (VoIP
providers or STUN extensions if any). --- correct answer ---True
SRTP will secure calls so that a middle-man can't see the SIP traffic
in plain-text. --- correct answer ---False
If a caller enters the PIN of the voicemail of an extension
incorrectly 3 times, the specific voice mail account gets blocked for
2 minutes. --- correct answer ---False
The default Blacklist time interval is of 1800 minutes. --- correct
answer ---True
2025/2026 Complete Questions with Verified
Answers
Introduction:
This document contains the full set of questions and verified
answers for the 3CX Academy Advanced Certification Exam for the
academic year 2025–2026. It covers topics such as SIP trunk
configuration, call routing, firewall and security settings,
troubleshooting with Wireshark, and the use of 3CX features
including SBC, Call Flow Designer, and CRM integration. The
material provides a complete preparation resource aligned with the
official 3CX certification requirements.
,Exam Questions and Answers:
If you want to check 3CX routing of a call then only a Wireshark
capture is needed, --- correct answer ---False
Knowing only the FQDN/port of 3CX and the MAC address of a
phone I could guess its provisioning URL. --- correct answer ---
False
An outbound call is routed through the VoIP Provider. This "Route"
of the "Outbound Rule" has "Strip Digits" set as 0 and has no values
in the "Prepend" field. A user dials 004433272020. 3CX will send
the call to the provider exactly as dialed --- correct answer ---True
You can use the same VoIP Provider in all of the Outgoing Routes of
a rule --- correct answer ---True
If you want to decode audio in wireshark without any plugins, your
calls will need to be using either G711A or G711U --- correct answer
---True
If you want to check the internal PBX routing of a call, the most
reliable way is through the use of the Binary Log Viewer, or which
you must know some information about the call you are
,investigating, like the Caller ID, the time of the call, etc. --- correct
answer ---True
Assume the following scenario: 3CX is connected via a site-to-site
VPN with two different buildings where remote phones have been
provisioned. 3CX is on network 192.168.9.xxx, Phones on location A
are on network 192.168.3.xxx, Phones on location B are on network
192.168.8.xxx. When a call is established, between an extension on
remote location A to an extension to remote location B, by default
3CX will proxy the SIP and audio traffic and send it to the
extensions --- correct answer ---True
Assume the following scenario: 2 Phone Systems bridged over a
site-to-site VPN connection. Phone system A on network
192.168.9.xxx, Phone System B on network 192.168.3.xxx. The
options "Supports Re-Invite" and "Supports Re-places" are enabled
on the bridge settings. When a call is established between an
extension from PBX A to an extension behind PBX B, the audio will
be exchanged directly between the 2 extensions. --- correct answer
---False
When an established call from your local extension to an external
number is terminated from your IP Phone you should see a BYE
being send in from the Provider / PSTN gateway, towards your PBX
IP address in wireshark --- correct answer ---False
, When 3CX has been installed without an FQDN from 3CX and in
split DNS mode, the DNS server must not be installed on the same
machine as the phone system --- correct answer ---True
A TLS certificate and key will have to be imported into 3CX so taht
SRTP can be used. --- correct answer ---False
You cannot create multiple CID "Inbound Rules" and associate them
with different SIP Trunks you have in 3CX. --- correct answer ---
False
The 3CX SIP port should be filtered by firewall ACL rules to
maximize security and allow only trusted IPs to reach it (VoIP
providers or STUN extensions if any). --- correct answer ---True
SRTP will secure calls so that a middle-man can't see the SIP traffic
in plain-text. --- correct answer ---False
If a caller enters the PIN of the voicemail of an extension
incorrectly 3 times, the specific voice mail account gets blocked for
2 minutes. --- correct answer ---False
The default Blacklist time interval is of 1800 minutes. --- correct
answer ---True
