Switching to VoIP

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Compiling and Installing Asterisk

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More recent revisions of the Asterisk software provide more detailed

examples in their sample config files than older revisions do.

For Those Who Prefer RPM Packages

Red Hat RPM packages for Asterisk and the driver modules can be obtained from

http://www.macvoip.com or from http://www.n2net.net.

Loading the Interfacing Drivers

The software drivers that allow Asterisk to use telephone line interfaces (like the

X100P) come in the form of kernel modules (files that add core functionality to the

operating system), and we compiled them in the previous section. In order to make

sure Asterisk will function correctly, you’ll need to load the modules using these

shell commands:

# modprobe zaptel

# modprobe wcfx ## if you're using a TDM400P

# modprobe wcfxo ## if you're using a X100P

# ztcfg -vvv ## more verbosity with every 'v'

These commands enable the Digium X100P card in your computer (if you’re using

one) and create logical channels that Asterisk can use for voice traffic. The order of

execution of these commands is important, because voice channels are numbered in

the same order their interface cards are enabled. If you had two X100P cards

installed or a TDM400P with two FXO modules, you would have two logical voice

channels.

The Zaptel module doesn’t need ...