Page 79 - Asterisk™: The Future of Telephony

you can select combinations of audio packages for use in your environment. Some of
the formats available include:

• WAV
• μlaw
• alaw
• GSM
• G.729
• G.722 (wideband, 16-bit)
As of this writing, the Core Sound packages are available in the following languages:

• English
• Spanish
• French

Selecting any sounds in menuselect will cause the system to download
the files from the Digium FTP server upon install. The size of these files
ranges anywhere from 2 MB to 27 MB, so be aware of this when instal-
ling offline, or on slow and expensive links.

Other Useful Add-ons

The asterisk-addons package contains code to allow the storage of Call Detail Records
(CDRs) to a MySQL database. There is also code that allows Asterisk to natively play
MP3s (which we don’t recommend unless you have a powerful system with very few
phones on it). Some folks may also be interested in the interpreter that allows you to
load Perl code into memory for the life of an Asterisk process (which can be very helpful
if you have a large number of AGI calls to the Perl interpreter). Programs are placed
into asterisk-addons when there are licensing issues preventing them from being im-
plemented directly into the Asterisk source code, or when they are not considred mature
enough to be integrated with Asterisk.
The http://ftp.digium.com/pub/asterisk/g729/ directory contains the code and registra-
tion program for the proprietary G.729A codec . If you install the g729 sounds packages,
Asterisk will be able to communicate with devices that natively support the G.729A
codec, but will not be able to transcode between other codecs and G.729A until a license
is obtained to use it.

Common Compiling Issues

There are many common compiling issues that users often run into. Here are some of
the more common problems, and how to resolve them.

Common Compiling Issues | 51