3CX ADVANCED QUESTIONS &
ANSWERS(RATED A+)
You can schedule daily and weekly backups, but not monthly backups from the
Management Console. - ANSWERTrue
Only single IPs can be entered into the Blacklist. - ANSWERFalse.
An IP that has triggered an Anti-Hacking rule and been blacklisted can be manually
removed from the IP Blacklist before the set Blacklist Interval is reached. -
ANSWERTrue.
SIP Response Codes in the range 4xx indicate a Request Failure. - ANSWERTrue.
3CX Log Files are not deleted when you restart the 3CX Services. - ANSWERTrue.
In "Bridges" it is possible to dial external numbers via a VoIP Provider registered on the
"Remote PBX". - ANSWERTrue.
When an established call from a Local device to an External Number is terminated by
the IP Phone, the BYE SIP message sent from the IP Phone to the 3CX server address
should be seen in Wireshark. - ANSWERTrue.
The 3CX "Global Blacklist" feature sends and receives malicious IP Address information
to/from 3CX. - ANSWERTrue.
Secure SIP typically uses TCP or TLS as the transport protocol, not UDP. -
ANSWERTrue.
The 3CX Event Log shows RPS requests 3CX sends. - ANSWERTrue.
The default HTTPS port (TCP:5001) needs to be forwarded on the network firewall for
presence to work, not the HTTP port. - ANSWERTrue
The 3CX SBC encrypts voice traffic (RTP) between remote IP phones and the 3CX
server. - ANSWERFalse
The 3CX SBC does not require any port forwarding on the firewall at the remote location
to operate correctly. - ANSWERTrue.
3CX Technical Support typically does not assist with the configuration of firewall devices
in front of 3CX. - ANSWERTrue.
ANSWERS(RATED A+)
You can schedule daily and weekly backups, but not monthly backups from the
Management Console. - ANSWERTrue
Only single IPs can be entered into the Blacklist. - ANSWERFalse.
An IP that has triggered an Anti-Hacking rule and been blacklisted can be manually
removed from the IP Blacklist before the set Blacklist Interval is reached. -
ANSWERTrue.
SIP Response Codes in the range 4xx indicate a Request Failure. - ANSWERTrue.
3CX Log Files are not deleted when you restart the 3CX Services. - ANSWERTrue.
In "Bridges" it is possible to dial external numbers via a VoIP Provider registered on the
"Remote PBX". - ANSWERTrue.
When an established call from a Local device to an External Number is terminated by
the IP Phone, the BYE SIP message sent from the IP Phone to the 3CX server address
should be seen in Wireshark. - ANSWERTrue.
The 3CX "Global Blacklist" feature sends and receives malicious IP Address information
to/from 3CX. - ANSWERTrue.
Secure SIP typically uses TCP or TLS as the transport protocol, not UDP. -
ANSWERTrue.
The 3CX Event Log shows RPS requests 3CX sends. - ANSWERTrue.
The default HTTPS port (TCP:5001) needs to be forwarded on the network firewall for
presence to work, not the HTTP port. - ANSWERTrue
The 3CX SBC encrypts voice traffic (RTP) between remote IP phones and the 3CX
server. - ANSWERFalse
The 3CX SBC does not require any port forwarding on the firewall at the remote location
to operate correctly. - ANSWERTrue.
3CX Technical Support typically does not assist with the configuration of firewall devices
in front of 3CX. - ANSWERTrue.
