Dial a predefined number when the phone goes off hook
Configuration
Implemented by using partitions, CSS, and translation patterns
Translation pattern with a null-string pattern is created and put into a partition.
Null-string pattern is not allowed if partition is left as none. This is avoid the accidental creation of such partition that will intercept all call.
Dialed number (null-string) is transformed to PLAR destination number
Partition is the only entry in CSS of phone
Translation pattern requires access to PLAR destination (CSS with partition of PLAR destination or no pattern at PLAR destination)
When phone goes off-hook, the dialed string (null string to indicate off-hook status) matches the translation pattern and is translated to PLAR number.