Tutorials: Install sngrep on Debian 10 3CX V18

To troubleshoot we need to look at the connections and messages made to and from the 3CX PBX.

A good way to monitor SIP network connections is to use the "sngrep" package (https://github.com/irontec/sngrep) which is in standard Debian repositories.

To install sngrep, simply use the apt package manager to install:

apt install sngrep