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Asterisk basics

Config

Disable output Remote UNIX connection commands in log 

# grep hideconnect /etc/asterisk/asterisk.conf
hideconnect = yes

Commands

Connect to console 

asterisk -rx
with debug 
asterisk -rvvvx

All peers 

sip show peers
only one 
sip show peer [PEERNAME]

Sip registration 

sip show registry

Channels 

sip show channels

Settings 

sip show settings

Current channels (calls) 

core show channels

Hangup call 

channel request hangup [TAB]

Hangup all calls 

channel request hangup all

Dial plans 

# view
$ dialplan show [TAB]
# ...
$ dialplan reload
#
$ ael reload

Call from console 

originate SIP/sipprovider/1234567 extension 101@from-internal

Sounds

Preparation sound files 

# for mp3 support
apt-get install libsox-fmt-mp3
#
# ULAW
sox -V hello.wav -r 8000 -c 1 -t ul hello.ulaw
sox hello.mp3 -r 8000 -c 1 -t ul hello.ulaw
# ALAW
sox -V hello.wav -r 8000 -c 1 -t al hello.alaw
# GSM
sox -V hello.wav -r 8000 -c 1 -t gsm hello.gsm

Path for sounds 

/usr/local/share/asterisk/sounds/{lang}
/var/lib/asterisk/sounds/{lang}

Tools

sngep - sip connection viewer 

apt install sngrep

Debian 9. Restore missing config files 

dpkg -i --force-confmiss /var/cache/apt/archives/asterisk-config_1%3a13.14.1~dfsg-2_all.deb