View source for Modem.isOpen

{{Function
|name=''modem''.isOpen
|args={{type|number}} channel
|returns={{type|boolean}} is channel open?
|api=Modem
|addon=ComputerCraft
|desc=Checks whether or not a certain channel is open. 
|examples=
{{Example
|desc=Checks whether the computer is listening on channel 5. 
|code= local modem = [[peripheral.wrap]]("top")
 
 if '''modem.isOpen(5)''' then
   print("The computer is listening on channel 5.")
 else
   print("The computer is not listening on channel 5.")
 end
|output=Whether or not channel 5 is open.
}}
}}

[[Category:API_Functions]]