IPitomy IP550 User Manual Ver.1 - Manual (Page 112)

IPitomy Confidential 107
4.1.2 Busy Lamp Field
The BLF feature on the IP phone allows a specific extension to be monitored, dialed and picked up for different
states. BLF monitors the status (ringing, busy or idle) of extensions on the IP phone. The LED status of BLF soft
key is shown as follows:
Activity Light
Idle Off
Busy On
Ringing
blinking
User can use the BLF soft key to dial out if the remote extension is idle. User can use the BLF soft key to pick
up the call if the remote extension is ringing.