[asterisk-users] Presence for channels other than SIP.

[Nikhil]

Hi
  How to get the presence status of channels than SIP like Phone,Dahdi 
,gsm and etc. I have checked the DEVICE_STATE function in dialplan but 
it shows only SIP channels status may be IAX too ,for other type 
channels(Phone,Dahdi,gsm) it is not showing anything.,And I tried hint  
too then also same result.

Is this feature available in asterisk ?

Thanks
Nikhil