As standard (default setting), external diversion is restricted for all extensions. This can be changed in system programming.
As system administrator, follow the steps on page 56 & 57 (Extension Diverts section) of the BT Quantum administrator's guide.
Take care - it's possible that external divert could be misused.
Once you have programmed the system, the extension user can
set up the divert - see
How do I divert my BT Quantum extension?
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