Ericsson 4422 User Manual page 48

Call Forwarding
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48
Re-activate External Diversion
Divert your calls to an external diversion address.
Press to activate the programmed External Diversion.
Verification tone. You can make outgoing calls as usual. A special
dial tone and the display indication reminds you that call forwarding
is active.
Press to finish the procedure.
BusinessPhone – Ericsson Dialog 4422 IP Office