Saludos Administrador, el problema es que al cargar el dialplan me envía errores ya que al modificarlos desde linux y tras reiniciar conmutador borra los parámetros cambiados que hago desde linux en el archivo extensions_additional.conf, en que apartado de Freepbx debo modificarlos .

[2016-10-13 12:21:05] WARNING: pbx_config.c:1645 pbx_load_config: Unable to register extension at line 4490 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1640 pbx_load_config: The use of '.' for an extension is strongly discouraged and can have unexpected behavior. Please use 'X.' instead at line 6246 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1640 pbx_load_config: The use of '.' for an extension is strongly discouraged and can have unexpected behavior. Please use 'X.' instead at line 6247 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1640 pbx_load_config: The use of '.' for an extension is strongly discouraged and can have unexpected behavior. Please use 'X.' instead at line 6248 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1640 pbx_load_config: The use of '.' for an extension is strongly discouraged and can have unexpected behavior. Please use 'X.' instead at line 6537 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1640 pbx_load_config: The use of '.' for an extension is strongly discouraged and can have unexpected behavior. Please use 'X.' instead at line 6538 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1664 pbx_load_config: Context 'ext-paging' already included in 'from-internal-noxfer-additional' context on include at line 7572 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1664 pbx_load_config: Context 'ext-paging' already included in 'from-internal-noxfer-additional' context on include at line 7573 of /etc/asterisk/extensions_additional.conf
[2016-10-13 12:21:05] WARNING: pbx_config.c:1664 pbx_load_config: Context 'ext-paging' already included in 'from-internal-noxfer-additional' context on include at line 7574 of /etc/asterisk/extensions_additional.conf