Connects to freeswitch via ESL and dumps events
Usage: esldump [-h] [-e value] [-H value] [-p value]
-e, --event=value events to capture, may be used multiple times (default: CHANNEL_ANSWER
CHANNEL_HANGUP)
-h, --help print (this) help message
-H, --host=value freeswitch ESL host (default: "127.0.0.1")
-p, --port=value freeswitch ESL port (default: 8021)