Parar Asterisk:

[root@GW2CCM ~]# service asterisk stop
Stopping safe_asterisk:                                    [  OK  ]
Shutting down asterisk:                                    [  OK  ]

Reiniciar servio Dahdi:

[root@GW2CCM ~]# service dahdi restart
Unloading DAHDI hardware modules: ERROR: Module wanpipe is in use
ERROR: Module dahdi is in use by wanpipe
error
Loading DAHDI hardware modules:
  wct4xxp:                                                 [  OK  ]
  wcte12xp:                                                [  OK  ]
  wcte13xp:                                                [  OK  ]
  wct1xxp:                                                 [  OK  ]
  wcte11xp:                                                [  OK  ]
  wctdm24xxp:                                              [  OK  ]
  wcfxo:                                                   [  OK  ]
  wctdm:                                                   [  OK  ]
  wcb4xxp:                                                 [  OK  ]
  wctc4xxp:                                                [  OK  ]
  xpp_usb:                                                 [  OK  ]

Running dahdi_cfg:                                         [  OK  ]

Levantar Asterisk:

[root@GW2CCM ~]# service asterisk start
Starting asterisk: /usr/sbin/safe_asterisk: line 86: ulimit: open files: cannot modify limit: Operation not permitted

Verificar que levanto de forma correcta:

[root@GW2CCM ~]# rasterisk