3CX Academy, Advanced Certification
1) In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma
separated values will allow multiple extension ranges to be defined - Correct
Answer : True
2) The Virtual Extension of the slave must match the master side virtual extension
number - Correct Answer : True
3) 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. - Correct
Answer : False
4) On outbound calls to external numbers, 3CX will process "Outbound Rules" in a
"Best Matching" way, depending on how many of the criteria match. - Correct
Answer : False
5) Wireshark can - without any additional Plugins Decode all Codecs including
G711A, G711U, GSM, G729, G726 - Correct Answer : False
6) STUN extensions can be configured to connect to the tunnel port of 3CX instead
of the SIP port for more security. - Correct Answer : False
7) The log files of 3CX are never cleaned even when you restart the 3CX Services -
Correct Answer : False
8) 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. - Correct Answer : False
, 9) Remote extensions may be provisioned using the HTTP or HTTPS URLs -
Correct Answer : False
10) The default Voicemail PIN of an extension consist of 4 random alphanumerical
characters. - Correct Answer : False
11) 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. - Correct Answer : True
12) 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.
- Correct Answer : True
13) 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 - Correct Answer : True
14) 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. - Correct Answer
: True
15) When selecting the option "I need a 3CX FQDN" an internal DNS is not
mandatory - Correct Answer : True
1) In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma
separated values will allow multiple extension ranges to be defined - Correct
Answer : True
2) The Virtual Extension of the slave must match the master side virtual extension
number - Correct Answer : True
3) 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. - Correct
Answer : False
4) On outbound calls to external numbers, 3CX will process "Outbound Rules" in a
"Best Matching" way, depending on how many of the criteria match. - Correct
Answer : False
5) Wireshark can - without any additional Plugins Decode all Codecs including
G711A, G711U, GSM, G729, G726 - Correct Answer : False
6) STUN extensions can be configured to connect to the tunnel port of 3CX instead
of the SIP port for more security. - Correct Answer : False
7) The log files of 3CX are never cleaned even when you restart the 3CX Services -
Correct Answer : False
8) 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. - Correct Answer : False
, 9) Remote extensions may be provisioned using the HTTP or HTTPS URLs -
Correct Answer : False
10) The default Voicemail PIN of an extension consist of 4 random alphanumerical
characters. - Correct Answer : False
11) 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. - Correct Answer : True
12) 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.
- Correct Answer : True
13) 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 - Correct Answer : True
14) 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. - Correct Answer
: True
15) When selecting the option "I need a 3CX FQDN" an internal DNS is not
mandatory - Correct Answer : True
