Master pwede po pa-request ng Udemy asterisk tutorials po:

ito po mga link:
https://www.udemy.com/how-to-write-a...configuration/
https://www.udemy.com/building-a-com...with-asterisk/
https://www.udemy.com/asterisk-freep...loper-journey/

Thanks po in advance! Godbless!mwaaah!