When 3CX has been installed without an 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
A TLS certificate and key will have to be imported into 3CX so that
SRTP can be used.
- Correct Answer - False
You cannot create multiple CID "Inbound Rules" and associate
them with different SIP Trunks you have in 3CX.
- Correct Answer - False
,The 3CX SIP port should be filtered by firewall ACL rules to
maximize security and allow only trusted IPs to reach it (VoIP
providers or STUN extensions if any).
- Correct Answer - True
SRTP will secure calls so that a middle-man can't see the SIP
traffic in plain-text.
- Correct Answer - False
If a caller enters the PIN of the voicemail of an extension
incorrectly 3 times, the specific voice mail account gets blocked
for 2 minutes.
- Correct Answer - False
The default Blacklist time interval is of 1800 minutes.
- Correct Answer - True
When an "Outbound Rule" has an extension group defined,
outgoing calls from the conference extension are able to be made
from 3CX
,- Correct Answer - False
You have a Mater Bridge with 4-digit extensions 1xxx and a Slave
Bridge with 4-digit extensions 2xxx. In the "Outbound Rules" you
use to route calls across the bridge, using a prefix is mandatory.
- Correct Answer - False
"Inbound CID Reformatting" can be used to change the Caller ID
name of an incoming call based on a set of rules.
- Correct Answer - False
The "Server Activity Log" will provide information for: Phone
Registrations, Gateway and SIP Trunk Interactions, All Related
Calls
- Correct 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
- Correct 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.
- Correct 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.
- Correct 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
- Correct Answer - True
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