Asterisk

• Asterisk™: Полное руководство, 5-е издание https://translaster.github.io/Definitive-Guide-5th-Edition/glava-19.html
• справочник https://xa0t3k.me/files/SIP/protokol-sip-spravochnik.pdf

• https://dev.to/onmyway133/learning-voip-rtp-and-sip-aka-awesome-pjsip-9d1

• https://github.com/andrius/asterisk - base image
• https://appfleet.com/blog/serverless-asterisk-with-docker-and-aws-fargate/

• Asterisk Docker - https://www.youtube.com/watch?v=54PIFPgnQLc
• Asterisk management by AMI/AGI/ARI https://voxlink.ru/webinars/asterisk-ami-webinar/
• PJSIP https://www.youtube.com/watch?v=4oqBUZQphIY
• http://samag.ru/archive/article/2017 - все что хотели знать про sip
• http://weissvogel.blogspot.com/2019/08/asterisk-docker.html
• http://wiki.pro-voip.ru/asterisk/nat-sip-i-asterisk.html
• https://serveradmin.ru/nastroyka-servera-telefonii-asterisk-s-nulya/#Nastrojka_sip_trunk_tranka_i_dobavlenie_nomera

• http://asterisk.ru/knowledgebase/debug
• https://serveradmin.ru/analiz-sip-trafika-v-asterisk-s-pomoshhyu-sngrep/
• https://voxlink.ru/kb/asterisk-configuration/operativnaya-diagnostika-sip-v-konsoli-asterisk-kanaly-pjsip-i-chan_sip/

• https://github.com/starkovv/asterisk-pjsip-visual-diagram/blob/master/pjsip_dot_conf_diagram.png

exten => _001X.,n,Set(PJSIP_MEDIA_OFFER(audio)=!all,g729)
exten => _001X.,n,Set(PJSIP_SEND_SESSION_REFRESH()=invite)
exten => _001X.,n,Dial(PJSIP/Aside/sip:${EXTEN}@ip:5060,b(out-pre-dial,s,1))

[out-pre-dial]
exten => s,1,NOOP(Pre dialer)
exten => s,n,Set(PJSIP_SEND_SESSION_REFRESH()=invite)
exten => s,n,Return()