Aastra 9480i User Manual page 207

Configuring "Incoming Call Interrupts Dialing"
Aastra Web UI
Use the following procedures to configure "Incoming Call Interrupts Dialing" on the IP Phone.
Note:
"Incoming Call Interrupts Dialing" is disabled by default.
1. Click Basic Settings->Preferences->General.
2. Enable the "Incoming Call Interrupts Dialing" field by checking the check box. Disable this
field by unchecking the box). Default is disabled.
3. Click Save Settings.
Model 9480i IP Phone User Guide 201