Basic 3CX call disconnect troublshooting

!!! This is work in progress !!!

 1. login as root to your 3CX Linux appliance and run the following:

1. sudo apt update
2. sudo apt install traceroute
3. sudo apt install mtr

2. run and record the output of the following

1. traceroute <your SIP trunk destination>
2. mtr -4 --report --report-cycles 50 <your SIP trunk destination>
3. mtr -4 --report -n --aslookup --report-cycles 100 <your SIP trunk destination> > mtr-client-to-server-icmp.txt
4. mtr -4 -u -P 5060 --report -n --aslookup --report-cycles 100 <your SIP trunk destination> > mtr-client-to-server-udp.txt
5. mtr -4 -T -P 5060 --report -n --aslookup --report-cycles 100 <your SIP trunk destination> > mtr-client-to-server-tcp.txt