function 'TRYLOCK'
[Synopsis] Attempt to obtain a named mutex. [Description] Attempts to grab a named lock exclusively, and prevents other channels from obtaining the same lock. Returns '1' if the lock was available or '0' otherwise. NOTE: If 'live_dangerously' in 'asterisk.conf' is set to 'no', this function can only be executed from the dialplan, and not directly from external protocols. [Syntax] TRYLOCK(lockname) [Arguments] Not available
[See Also] Not available