[root@localhost ~]# service zaptel start
Loading zaptel framework:  [  OK  ]
Waiting for zap to come online...OK
Loading zaptel hardware modules: tor2.
 wct4xxp.
 wct1xxp.
 wcte11xp.
 wctdm24xxp.
 wcfxo.
 wctdm.
 wcusb.
Running ztcfg:  [  OK  ]
find: invalid predicate `-quit'

[root@localhost ~]# service zaptel stop
Unloading zaptel hardware drivers: wcusb wctdm wcfxo wctdm24xxp wcte11xp wct1xxp wct4xxp tor2.
Removing zaptel module:  ERROR: Module zaptel is in use by ztdummy
[FAILED]