Asterisk is an Open Source PBX and telephony toolkit. It is, in a
 sense, middleware between Internet and telephony channels on the
 bottom, and Internet and telephony applications at the top.
 .
 Asterisk includes a set of standard sound files in various formats.
 The core part of that collection in Spanish, by voice actress Allison
 Smith, is contained in various encodings in packages
 asterisk-core-sounds-es-*; this package registers these through the
 alternatives system to provide the default "es" (Spanish) and "es_MX"
 (Mexican Spanish) sounds.