[chan_iax2.so] => (Inter Asterisk eXchange (Ver 2))
Oct 13 20:59:48 NOTICE[1082571712]: res_musiconhold.c:306 monmp3thread: Request to schedule in the past?!?!
Oct 13 20:59:48 WARNING[1076212352]: chan_iax2.c:7409 load_module: Unable to open IAX timing interface: No such device
 [chan_local.so] => (Local Proxy Channel)
 [chan_skinny.so] => (Skinny Client Control Protocol (Skinny))
Oct 13 20:59:48 WARNING[1076212352]: chan_skinny.c:2584 reload_config: Unable to get our IP address, Skinny disabled
 [chan_oss.so] => (OSS Console Channel Driver)
Oct 13 20:59:48 WARNING[1076212352]: chan_oss.c:434 soundcard_init: Unable to open /dev/dsp: No such device
 [chan_phone.so] => (Linux Telephony API Support)
 [chan_zap.so] => (Zapata Telephony w/PRI)
Oct 13 20:59:48 WARNING[1076212352]: chan_zap.c:755 zt_open: Unable to open '/dev/zap/channel': No such device
Oct 13 20:59:48 ERROR[1076212352]: chan_zap.c:6174 mkintf: Unable to open channel 4: No such device
here = 0, tmp->channel = 4, channel = 4
Oct 13 20:59:48 ERROR[1076212352]: chan_zap.c:9109 setup_zap: Unable to register channel '4'
Oct 13 20:59:48 WARNING[1076212352]: loader.c:334 ast_load_resource: chan_zap.so: load_module failed, returning -1
Oct 13 20:59:48 WARNING[1076212352]: loader.c:429 load_modules: Loading module chan_zap.so failed!
Ouch ... error while writing audio data: : Broken pipe


*************


[root@asterisk root]# modprobe wcfxs
/lib/modules/2.4.20-8/misc/wcfxs.o: init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
      You may find more information in syslog or the output from dmesg
/lib/modules/2.4.20-8/misc/wcfxs.o: insmod /lib/modules/2.4.20-8/misc/wcfxs.o failed
/lib/modules/2.4.20-8/misc.old/wcfxs.o: init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
      You may find more information in syslog or the output from dmesg
/lib/modules/2.4.20-8/misc.old/wcfxs.o: insmod /lib/modules/2.4.20-8/misc.old/wcfxs.o failed
/lib/modules/2.4.20-8/misc.old/wcfxs.o: insmod wcfxs failed