I cant load the module 'chan_dahdi.so'

*CLI> module show like chan_dahdi.so
Module Description Use Count Status
chan_dahdi.so DAHDI Telephony w/PRI 0 Not Running
1 modules loaded

then I try to run it ,but…it says…

*CLI> module load chan_dahdi.so
Unable to load module chan_dahdi.so
Command ‘module load chan_dahdi.so’ failed.
[2016-02-19 14:03:39] WARNING[3536]: bridge.c:218 __ast_bridge_technology_register: A bridge technology of native_dahdi already claims to exist in our world.

Well, how can I load it? My card seems working good, and I have reinstalled the dahdi and Asterisk but it still cant load successfully.

(And, there are some info of my dahdi)
lsmod | grep dahdi
dahdi_echocan_mg2 12846 4
dahdi_voicebus 57426 1 wctdm24xxp
dahdi 212248 3 wctdm24xxp,dahdi_voicebus,dahdi_echocan_mg2
crc_ccitt 12627 2 wctdm24xxp,dahdi

cat /proc/dahdi/*
Span 1: WCTDM/0 “Wildcard TDM410P” (MASTER)

   1 WCTDM/0/0 FXSKS (EC: MG2 - INACTIVE) 
   2 WCTDM/0/1 FXSKS RED (EC: MG2 - INACTIVE) 
   3 WCTDM/0/2 FXSKS RED (EC: MG2 - INACTIVE) 
   4 WCTDM/0/3 FXSKS RED (EC: MG2 - INACTIVE) 

Please help me.

You can’t load what is already loaded.

chan_dahdi.so DAHDI Telephony w/PRI 0 Not Running
1 modules loaded

If it was not loaded then that command would have returned something else.