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+To connect to a running Asterisk session:
+asterisk -rvvv
+
+To issue a command to Asterisk from the shell:
+asterisk -rx "<command>"
+
+To originate a call from a SIP trunk on an Asterisk server, to a specified number:
+asterisk -rx "channel originate SIP/<trunk>/<number> application echo"
+
+To print out the details of SIP accounts:
+asterisk -rx "sip show peers"
+
+To print out the passwords of SIP accounts:
+asterisk -rx "sip show users"
+
+To print out the current active channels:
+asterisk -rx "core show channels"