You are here: Help Customer Equipment Setting BLF keys on Cisco SPA Series Phones
A BLF key stands for Busy Lamp Field, it allows you to monitor the status of another extension in your Hosted PBX service. It allows you to see if the other extensions phones is ringing or on hold by changing the colour of the LED.
Please note, the steps here demonstrate how to configure the line keys as BLF keys, if you have a sidecar attached to your Cisco phone please see these instructions instead.
For a Cisco SPA series phone you can use the following steps:
To find the IP Address of a Cisco Phone: