I monitor from the cli using this script I created. You can see the full version here which includes SIP and PJSIP peers: RTP Monitoring Script
It’s great to leave running all day to watch your environment.
Here it is for strictly PJSIP:
#!/bin/bash
while true
do
clear
echo -e "\e[33mCurrent PJSIP Peers / Contacts:\e[39m"
echo "-----------------------------"
asterisk -rx 'pjsip show contacts'
echo ""
echo -e "\e[33mCurrent PJSIP Statistics / Active Calls:\e[39m"
echo "----------------------------------------"
asterisk -rx 'pjsip show channelstats'
sleep 2
done