asterisk users - Jul 2013 - Subscribe to Local channel status

Hi,

Is it possible to assign hint extension to Local channel? Something like 
this:

exten => 555,hint,Local/123123123 at my-context

The purpose is to subscribe to this channel state from SIP-phone. I know 
that queues can track Local channel status, however I could not find any 
information regarding using Local channel in hints.

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Best regards,
Grigoriy