1|Page
1
2025 3CX Academy Advanced Certification |
Questions with 100% Correct Answers | Verified |
Latest Update.
In the criteria of the "Outbound Rules", "Calls from Extension(s)"
having comma separated values will allow multiple extension
ranges to be defined - ANSWER True
The Virtual Extension of the slave must match the master side
virtual extension number - ANSWER True
For extensions that are registered over multiple site- to- site VPNs,
by default 3CX delivers the audio between phones if they are on
different subnets. - ANSWER False
On outbound calls to external numbers, 3CX will process "Outbound
Rules" in a "Best Matching" way, depending on how many of the
criteria match. - ANSWER False
Wireshark can - ANSWER without any additional Plugins Decode all
Codecs including G711A, G711U, GSM, G729, G726 - ANSWER False
STUN extensions can be configured to connect to the tunnel port of
3CX instead of the SIP port for more security. - ANSWER False
The log files of 3CX are never cleaned even when you restart the 3CX
Services - ANSWER False
Once Secure SIP has been configured in 3CX, Secure SIP certificates
will need to be deployed manually in phones and softphones OS so
that they can communicate. - ANSWER False
, 2|Page
2
Remote extensions may be provisioned using the HTTP or HTTPS
URLs - ANSWER False
The default Voicemail PIN of an extension consist of 4 random
alphanumerical characters. - ANSWER False
Your 3CX has only one SIP Trunk and receives a call from number
8135791691. If you have a "Inbound CID Reformatting" rule on the
Trunk with "Source Pattern" 813(...)(.*) and "Replace Pattern" \1\2,
the extension that receives the call will see "5791691" as the caller
ID on its display. - ANSWER True
When 3CX has been installed without a FQDN from 3CX and in split
DNS mode, the DNS server must not be installed on the same
machine as the phone system. - ANSWER True
Your Local IP Phone loses the registration to 3CX and you want do
troubleshoot the issue. You should start a Wireshark Capture on the
3CX Server, reboot the phone, and then apply the Filter
sip.Cseq.Method==REGISTER in order to see if registrations are
reaching 3CX - ANSWER True
Your 3CX has only one SIP Trunk and receives a call from number
422033272020 and you want it to be presented on the extension
display as +44272020. You can do this with a "Inbound CID
Reformatting" rule on the Trunk with "Source Pattern" 44(..)(..)(.*)
and "Replace Pattern" +44\3. - ANSWER True
When selecting the option "I need a 3CX FQDN" an internal DNS is
not mandatory - ANSWER True
The order of "Inbound Rules" is not important when you have DID
and CID "Inbound Rules", CIDs always have higher priority. -
ANSWER False
1
2025 3CX Academy Advanced Certification |
Questions with 100% Correct Answers | Verified |
Latest Update.
In the criteria of the "Outbound Rules", "Calls from Extension(s)"
having comma separated values will allow multiple extension
ranges to be defined - ANSWER True
The Virtual Extension of the slave must match the master side
virtual extension number - ANSWER True
For extensions that are registered over multiple site- to- site VPNs,
by default 3CX delivers the audio between phones if they are on
different subnets. - ANSWER False
On outbound calls to external numbers, 3CX will process "Outbound
Rules" in a "Best Matching" way, depending on how many of the
criteria match. - ANSWER False
Wireshark can - ANSWER without any additional Plugins Decode all
Codecs including G711A, G711U, GSM, G729, G726 - ANSWER False
STUN extensions can be configured to connect to the tunnel port of
3CX instead of the SIP port for more security. - ANSWER False
The log files of 3CX are never cleaned even when you restart the 3CX
Services - ANSWER False
Once Secure SIP has been configured in 3CX, Secure SIP certificates
will need to be deployed manually in phones and softphones OS so
that they can communicate. - ANSWER False
, 2|Page
2
Remote extensions may be provisioned using the HTTP or HTTPS
URLs - ANSWER False
The default Voicemail PIN of an extension consist of 4 random
alphanumerical characters. - ANSWER False
Your 3CX has only one SIP Trunk and receives a call from number
8135791691. If you have a "Inbound CID Reformatting" rule on the
Trunk with "Source Pattern" 813(...)(.*) and "Replace Pattern" \1\2,
the extension that receives the call will see "5791691" as the caller
ID on its display. - ANSWER True
When 3CX has been installed without a FQDN from 3CX and in split
DNS mode, the DNS server must not be installed on the same
machine as the phone system. - ANSWER True
Your Local IP Phone loses the registration to 3CX and you want do
troubleshoot the issue. You should start a Wireshark Capture on the
3CX Server, reboot the phone, and then apply the Filter
sip.Cseq.Method==REGISTER in order to see if registrations are
reaching 3CX - ANSWER True
Your 3CX has only one SIP Trunk and receives a call from number
422033272020 and you want it to be presented on the extension
display as +44272020. You can do this with a "Inbound CID
Reformatting" rule on the Trunk with "Source Pattern" 44(..)(..)(.*)
and "Replace Pattern" +44\3. - ANSWER True
When selecting the option "I need a 3CX FQDN" an internal DNS is
not mandatory - ANSWER True
The order of "Inbound Rules" is not important when you have DID
and CID "Inbound Rules", CIDs always have higher priority. -
ANSWER False
