IP Phone Expansion Configuration
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1)
Choose Phone->EXT Key, choose one of the key you want to make the assignment,
there is a pull-down menu in the Type field, choose Line from the list, and choose
the correspondent line.
2)
Press Confirm button to save the changes.
3)
The key on the LCD default display is a icon “ ” and the account which one you
choose.
BLF
You can configure the key for Busy Lamp Field (BLF) use which allows you to monitor
the status (idle, ringing, or busy) of other SIP accounts. User can dial out on a BLF
configured key on the expansion module EXP39.
To assign the key as BLF:
