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account- If account is given and it exists, the counter is specific for the account.
If account is a domain and the domain directory exists, counters are specific for a domain.name- The name of the counter is a string, up to 10 characters.operand- The counters never goes below zero. Valid operands for changing the value of a counter when assigning a value are:i- Increment by value.d- Decrement by value.s- Set to value.
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This documentation was imported from Asterisk Version SVN-branch-1.8-r371590r379342