Asterisk doesn't seem to recognize the B410p card and is still looking for /dev/zap/pseudo while ztdummy is not loaded (I checked). 

-- Executing MeetMe("IAX2/Voop50xxx-6", "|dM") in new stack
    -- Playing 'conf-getconfno' (language 'en')
Jun 27 01:19:25 WARNING[16398]: chan_zap.c:1064 zt_open: Unable to open '/dev/zap/pseudo': No such device or address
Jun 27 01:19:25 ERROR[16398]: chan_zap.c:7567 chandup: Unable to dup channel: No such device or address
Jun 27 01:19:25 WARNING[16398]: app_meetme.c:467 build_conf: Unable to open pseudo channel - trying device
Jun 27 01:19:25 WARNING[16398]: app_meetme.c:470 build_conf: Unable to open pseudo device
    -- Playing 'conf-invalid' (language 'en')
    -- Playing 'conf-getconfno' (language 'en')
  == Spawn extension (intern, 020718xxxx, 1) exited non-zero on 'IAX2/Voop50xxx-6'
    -- Hungup 'IAX2/Voop50xxx-6'