June 2019
Beginner to intermediate
660 pages
14h 30m
English
Content preview from The Complete Metasploit Guide
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An introduction to PBX
PBX is a cost-effective solution to telephony services in small and medium-sized companies because it provides much more flexibility and intercommunication between the company cabins and floors. A large company may also prefer PBX because connecting each telephone line to the external line becomes very cumbersome in large organizations. PBX includes the following:
- Telephone trunk lines that terminate at the PBX
- A computer that manages the switching of calls within the PBX and in and out of it
- The network of communication lines within the PBX
- A console or switchboard for a human operator
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.