3CX ACADEMY CERTIFICATION PACKAGE
BASIC INTERMEDIATE ADVANCED 2026
QUESTIONS AND CORRECT ANSWERS
GRADED A+
⩥ If you want to check 3CX routing of a call then only a Wireshark
capture is needed.
Answer: False
⩥ Knowing only the FQDN/port of 3CX and the MAC address of a
phone I could guess its provisioning URL.
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.
Answer: True
⩥ You can use the same VoIP Provider in all of the Outgoing Routes of a
rule.
Answer: True
, ⩥ If you want to decode audio in wireshark without any plugins, your
calls will need to be using either G711A or G711U.
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..
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.
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..
BASIC INTERMEDIATE ADVANCED 2026
QUESTIONS AND CORRECT ANSWERS
GRADED A+
⩥ If you want to check 3CX routing of a call then only a Wireshark
capture is needed.
Answer: False
⩥ Knowing only the FQDN/port of 3CX and the MAC address of a
phone I could guess its provisioning URL.
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.
Answer: True
⩥ You can use the same VoIP Provider in all of the Outgoing Routes of a
rule.
Answer: True
, ⩥ If you want to decode audio in wireshark without any plugins, your
calls will need to be using either G711A or G711U.
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..
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.
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..
