System information

You will be presented with a screen such as that in Figure 3-1 or Figure 3-2. You can
use the arrow keys on your keyboard to move up and down. The right arrow key will
take you into a submenu, and the left arrow key will take you back. You can use the
space bar or Enter key to select and deselect modules. Pressing the q key will quit
without saving, while the x key will save your selections and then quit.
Module Dependencies
Modules that have XXX in front of them are modules that cannot be compiled because
the configure script was not able to find the dependencies required (for example, if you
don’t have the unixODBC development package installed, you will not be able to com-
pile func_odbc
§
). Whenever you install a dependency, you will always need to rerun
configure before you run menuselect, so that the new dependency will be properly lo-
cated. The dependant module will at that point be available in menuselect. If the module
selection still contains XXX, either the configure script is still unable to find the depend-
ency or not all dependencies have been satisfied.
Once you’ve started menuselect, scroll down to Core Sound Packages and press the
right arrow
key (or Enter) to open the menu. You will be presented with a list of
available options. These options represent the core sound files in various languages and
formats. By default, the only set of files selected is CORE-SOUNDS-EN-GSM, which is the
English-language Core Sounds package in GSM format.
Select CORE-SOUNDS-EN-WAV and CORE-SOUNDS-EN-ULAW (or ALAW if you’re outside of North
America or Japan
‖
), and any other sound files that may be applicable in your network.
The reason we have multiple formats for the same files is that Asterisk
can play back the appropriate format depending on which codec is ne-
gotiated by an endpoint. This can lower the CPU load on a system sig-
nificantly.
After selecting the appropriate sound files, press the left arrow
key to go back to the
main menu. Then scroll down two lines to the Extra Sound Packages menu and press
the right arrow key (or Enter). You will notice that by default there are no packages
selected. As with the core sound files, select the appropriate language and format to be
installed. A good option is probably to install the English sound files in the WAV, ULAW,
and ALAW formats.
§ Which we will cover in Chapter 16, along with many other cool things.
‖ If you want to understand all about mu-law and A-law, you can read the section “Logarithmic
companding” on page 607. All you need to know here is that outside of North America and Japan, A-law is
used.
62 | Chapter 3: Installing Asterisk