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Check channel availability


This application will check to see if any of the specified channels are available.

This application sets the following channel variables:

  • AVAILCHAN - The name of the available channel, if one exists
  • AVAILORIGCHAN - The canonical channel name that was used to create the channel
  • AVAILSTATUS - The device state for the device
  • AVAILCAUSECODE - The cause code returned when requesting the channel


  • Technology/Resource - ** Technology2/Resource2 - Optional extra devices to check
    If you need more then one enter them as Technology2/Resource2&Technology3/Resourse3&.....
    Specification of the device(s) to check. These must be in the format of Technology/Resource, where Technology represents a particular channel driver, and Resource represents a resource available to that particular channel driver.
  • options
    • a - Check for all available channels, not only the first one
    • s - Consider the channel unavailable if the channel is in use at all
    • t - Simply checks if specified channels exist in the channel list

Import Version

This documentation was imported from Asterisk Version SVN-branch-10-r378689

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