Phone System – 3CX

Standard Installation on Debian OS https://www.3cx.com/docs/manual/installing-debian-linux-pbx/ Disable SIP Inspection in ASA: ASA(config)#policy-map global_policy class inspection_default no inspect sip Reinstall on Debian apt-get purge 3cxpbx apt-get update apt-get autoremove apt-get install 3cxpbx https://computingforgeeks.com/how-to-install-and-configure-3cx-pbx-on-debian/ Note: When provisioned by 3CX password of any

IP PBX and Telephony

Brief Introduction about Asterisk How to install Asterisk PBX: https://www.amazon.com/Complete-Asterisk-Training-install-configure/dp/1796396974/ref=sr_1_1_sspa?keywords=how+to+install+asterisk&qid=1583443998&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFKTlREVU1TMDRDSzYmZW5jcnlwdGVkSWQ9QTA3MjY1NjUzTFBMVERITDlBNVgmZW5jcnlwdGVkQWRJZD1BMDY3MjA1MTNKNk80NDhQNTYzQUEmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl