Add a Busy Lamp Field (BLF) to the M7310 and see the status of as many as 24 telephones. This is excellent for receptionist and administrative assistant positions that need to know whether a phone is idle, busy, or on "Do Not Disturb" before transferring a call.
All BLF modules come with a one (1) year warranty.
** Does NOT include telephone set
Local telephone companies: Buy Nortel Norstar M7310 BLF Modules at wholesale prices for your rental programs.