6 Voice network with Asterisk PBX
Now we will unreel a cheap, powerful and modular solution of local Voice network with
Asterisk PBX described in chapter 4 on the figure 3. The Hw possibilities of Asterisk PBX
are placed on the figure 9. The network we can portion to:
• Part of Exchange
• Part of VoIP clients (Sw, Hw phones)
• Part of NT (Network termination) ISDN connections
• Part of local interconnected ISDN phones (optional)
• Part of local POTS phones plug into FXS (Foreign Exchange Station) card (optional)
Fig. 9 -Full Asterisk PBX exchange with VoIP, ISDN and POTS clients
6.1 Part of PBX exchange configuration and functions
Asterisk is a complete PBX in software. It runs on Linux and provides all of the features you
would expect from a PBX and more. Asterisk does voice over IP in three protocols, and can
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