3CX BASIC CERTIFICATION STUDY GUIDE
2026 FULL ANSWERS TEST PAPER GRADED
A+
⩥ "Inbound CID Reformatting" can be used to change teh Caller ID
name of an incoming call based on a set of rules..
Answer: False
⩥ The "Server Activity Log" will provide information for: Phone
Registrations, Gateway and SIP Trunk Interactions, All Related Calls.
Answer: True
⩥ If you are having audio issues with calls between internal local
extensions and your firewall checker fails the first thing that you should
do is to make sure that your firewall checker test passes.
Answer: False
⩥ When viewing in wireshark a Remote Extension via STUN registering
to your 3CX, you should see in the SIP section of the Registration
message in the "Contact" field the Local IP address of the remote phone.
Answer: False
,⩥ If a site-to-site VPN is already in place between the PBX location and
a remote location, phones should be provisioned with Direct/STUN
provisioning method..
Answer: False
⩥ The default Voicemail PIN of an extension consist of 4 random
alphanumerical characters..
Answer: False
⩥ In order to check which side (Caller or Calee) terminated the call first,
you can check using wireshark to see who sent the first BYE message..
Answer: True
⩥ You are having an issue with incoming call routing being sent to the
wrong internal destination once it is received by 3CX. The first step to
troubleshoot the issue would be to set your System to Verbose Logging,
start wireshark, replicate the issue and then Restart all 3CX Services,
generate the support files and send them to 3CX Support for
troubleshooting.
Answer: False
⩥ Setting a Name when creating a "CID Inbound Rule" is mandatory.
Answer: False
, ⩥ When the option "Remote PBX uses SBC/Tunnel Connection" is
enabled on the master bridge, the Slabe bridge must be registered behind
the SBC..
Answer: False
⩥ You can take a phone that has already been provisioned with RPS as
remote STUN Extension and configure it as a Local LAN extension, as
long as 2 weeks have passed since the phone was provisioned as a
STUN extension.
Answer: False
⩥ You have run the 3CX "Firewall Checker" and comes up as Green, but
you still have audio issues and calls dropping on on outbound / inbound
calls. Can SIP ALG be the culprit?.
Answer: True
⩥ Remote presence of a bridged system is available in both IP Phones
(via BLF) and the 3CX Phone for Windows.
Answer: False
⩥ The numbering plan of bridged systems must be different in order for
outgoing calls to the bridge to work.
Answer: False
2026 FULL ANSWERS TEST PAPER GRADED
A+
⩥ "Inbound CID Reformatting" can be used to change teh Caller ID
name of an incoming call based on a set of rules..
Answer: False
⩥ The "Server Activity Log" will provide information for: Phone
Registrations, Gateway and SIP Trunk Interactions, All Related Calls.
Answer: True
⩥ If you are having audio issues with calls between internal local
extensions and your firewall checker fails the first thing that you should
do is to make sure that your firewall checker test passes.
Answer: False
⩥ When viewing in wireshark a Remote Extension via STUN registering
to your 3CX, you should see in the SIP section of the Registration
message in the "Contact" field the Local IP address of the remote phone.
Answer: False
,⩥ If a site-to-site VPN is already in place between the PBX location and
a remote location, phones should be provisioned with Direct/STUN
provisioning method..
Answer: False
⩥ The default Voicemail PIN of an extension consist of 4 random
alphanumerical characters..
Answer: False
⩥ In order to check which side (Caller or Calee) terminated the call first,
you can check using wireshark to see who sent the first BYE message..
Answer: True
⩥ You are having an issue with incoming call routing being sent to the
wrong internal destination once it is received by 3CX. The first step to
troubleshoot the issue would be to set your System to Verbose Logging,
start wireshark, replicate the issue and then Restart all 3CX Services,
generate the support files and send them to 3CX Support for
troubleshooting.
Answer: False
⩥ Setting a Name when creating a "CID Inbound Rule" is mandatory.
Answer: False
, ⩥ When the option "Remote PBX uses SBC/Tunnel Connection" is
enabled on the master bridge, the Slabe bridge must be registered behind
the SBC..
Answer: False
⩥ You can take a phone that has already been provisioned with RPS as
remote STUN Extension and configure it as a Local LAN extension, as
long as 2 weeks have passed since the phone was provisioned as a
STUN extension.
Answer: False
⩥ You have run the 3CX "Firewall Checker" and comes up as Green, but
you still have audio issues and calls dropping on on outbound / inbound
calls. Can SIP ALG be the culprit?.
Answer: True
⩥ Remote presence of a bridged system is available in both IP Phones
(via BLF) and the 3CX Phone for Windows.
Answer: False
⩥ The numbering plan of bridged systems must be different in order for
outgoing calls to the bridge to work.
Answer: False
