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An easy introduction to using and configuring Asterisk to build feature-rich telephony systems for small and medium businesses.

Internet telephony. --- Computer networks. --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Electronic data processing --- Network computers --- Internet-based telephony --- Internet phone --- Internet telephone --- IP telephony --- Voice over IP networks --- Telephone systems --- Distributed processing --- Asterisk (Computer file) --- Blogs --- Business --- Trade --- Economics --- Management --- Commerce --- Industrial management --- Blogging --- Web logs --- Weblogs --- Diaries --- Social media --- Web sites --- Citizen journalism --- E-books --- Blogs. --- Web publishing. --- World Wide Web publishing --- Network publishing (Computer networks) --- Webcasting --- Computer programs. --- Blogger. --- Google Blogger

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How to setup, configure and manage your Linux firewall, web proxy, DHCP, DNS, time server, and VPN with this powerful Open Source solution

Computers --- Firewalls (Computer security) --- Access control. --- Linux.