# Busy Lamp Field Indication

## Description

You can use the Busy Lamp Field feature to monitor the status of single-line sets, single-member lines, key system lines, multicall Broadcast Group
A directory number programmed to appear on multiple devices constitutes a broadcast group. There are two types of broadcast groups: Non-Prime Line and Prime Line. A Non-Prime Line group is a directory number programmed on one or more devices that is not the prime line on any device. A Prime Line group is a directory number programmed on button 0 of a phone. Server-based variants of MiVoice Business that use x86 processors, MiVoice Business for Industry Standard Servers MCD-ISS), Multi-instance MiVoice Business, and Virtual MiVoice Business, up to 250 appearances of the directory number can appear on one or more devices. For all other 3300 ICP/MiVoice Business call control platforms, up to 32 appearances of the directory number may appear on one or more devices.s, and Hot Desk users.

Additional BLF indicators can be obtained by adding a Programmable Key Module.

Each BLF indicator can also provide a single audible ring when the lamp starts to indicate a call ringing on the monitored line (see Direct Station Select/Busy Lamp Field Programming for more information).

The following table describes the BLF indicator on legacy phones:

Busy Lamp Indications
Busy Lamp Appearance | Meaning
Red | Green
OFF | OFF | Idle set, and "Green BLF Lamp for Logged in Hot Desk User" Class of Service option set to "No". Logged out Hot Desk user and "Green BLF Lamp for Logged in Hot Desk User" Class of Service option set to "Yes". See Notes below.
OFF | STEADY ON | Idle set or idle logged in Hot Desk user, and "Green BLF Lamp for Logged in Hot Desk User" Class of Service option set to "Yes". See Notes below.
STEADY ON | -- | Busy
Normal Alternating: 750 mS ON, 750 mS OFF | -- | Ringing (Idle or DND)
Alternating: 600 mS ON, 150 mS OFF | -- | DND (Idle or Busy)
Fast Alternating: 150 mS ON, 150 mS OFF | -- | Call Forward Always active
Alternating: 62 mS ON, 438 mS OFF | OFF | Logged out Hot Desk user, and "Green BLF Lamp for Logged in Hot Desk User" Class of Service option set to "No".

NOTES

- The green busy lamp appearance is for those sets that support green lamps.

- The green busy lamp appearance is not supported on Programmable Key Modules (PKMs).

- A logged out Hot Desk user is indicated by the lamp extinguishing.

- On IP Console applications( MiVoice Business Console), the BLF icons will show Hot Desk as logged out.

The following table describes the BLF indicator on 6910 IP Phones (indicators for the 6920, 6930 and 6940 IP Phones are described here):

Busy Lamp Indications
Busy Lamp Appearance | Meaning
Red
OFF | Idle set Logged in Hot Desk user
STEADY ON | Busy
Normal Alternating: 756 mS ON, 756 mS OFF | Ringing (Idle or DND)
Alternating: 900 mS ON, 100 mS OFF | DND (Idle or Busy)
Fast Alternating: 50 mS ON, 50 mS OFF | Call Forward Always active
Alternating: 100 mS ON, 900 mS OFF | Logged out Hot Desk user

NOTE: The Busy Lamp Field Indication feature is not applicable for 6905 IP Phones.

Busy Lamp Indications for PKMs and sets not supporting green lamps
Busy Lamp Appearance | Meaning
Red | Green
OFF | OFF | Idle set. Idle or logged out Hot Desk user and "Green BLF Lamp for Logged in Hot Desk User" Class of Service option set to "Yes".
OFF | ON | N/A
Alternating: 438 mS OFF, 62 mS ON | OFF | Logged out Hot Desk user, and "Green BLF Lamp for Logged in Hot Desk User" Class of Service option set to "No".

Busy Lamp Indications by Monitored Device or Group
Device or Group Type | Call Status | Busy Lamp Indication
Single Line or Key System Prime/Non-Prime Broadcast Group A directory number programmed to appear on multiple devices constitutes a broadcast group. There are two types of broadcast groups: Non-Prime Line and Prime Line. A Non-Prime Line group is a directory number programmed on one or more devices that is not the prime line on any device. A Prime Line group is a directory number programmed on button 0 of a phone. Server-based variants of MiVoice Business that use x86 processors, MiVoice Business for Industry Standard Servers MCD-ISS), Multi-instance MiVoice Business, and Virtual MiVoice Business, up to 250 appearances of the directory number can appear on one or more devices. For all other 3300 ICP/MiVoice Business call control platforms, up to 32 appearances of the directory number may appear on one or more devices.s Mixed Key System Group (Station Follows Call State) Stations | Idle | Idle
Ringing | Ringing
Busy | Busy
Call on Hard Hold | Busy (idle for stations)
Soft Held Call Recalling | Ringing
DND (All members of a Non Prime Key System) | DND
DND (Station or Prime Key System Broadcst Group) | DND
Call Forward Always active (Prime line) | Call Forward Always active
Hot Desk user logged out (Prime line only) | Hot Desk user logged out
Multicall Prime or Non Prime Broadcast Group A directory number programmed to appear on multiple devices constitutes a broadcast group. There are two types of broadcast groups: Non-Prime Line and Prime Line. A Non-Prime Line group is a directory number programmed on one or more devices that is not the prime line on any device. A Prime Line group is a directory number programmed on button 0 of a phone. Server-based variants of MiVoice Business that use x86 processors, MiVoice Business for Industry Standard Servers MCD-ISS), Multi-instance MiVoice Business, and Virtual MiVoice Business, up to 250 appearances of the directory number can appear on one or more devices. For all other 3300 ICP/MiVoice Business call control platforms, up to 32 appearances of the directory number may appear on one or more devices.s | Two Idle | Idle
Ringing and Idle | Ringing
Ringing and Busy | Ringing
Busy and Idle | Idle
Two Busy | Busy
Hard Held Call and Idle | Idle
Two Hard Held Calls | Busy
Hard Held Call Recalling | Ringing
Soft Held Call Recalling and Idle | Idle
Soft Held Call Recalling and New Call Ringing | Ringing
Two Soft Held Calls Recalling | Busy
All Members DND | DND
Mixed Multicall Group (Station Follows Call State) | Idle | Idle
Ringing and Idle | Ringing
Ringing and Busy | Ringing
Busy and Idle | Idle
Two Busy | Busy
Hard Held call at Station and Idle | Idle
Hard Held Call at Station and New Call Ringing | Ringing
Hard Held Call at Station and Busy | Idle
One or Two Hard Held Calls Recalling | Ringing
Soft Held Call Recalling and Idle | Idle
Soft Held Call Recalling and New Call Ringing | Busy
Soft Held Call Recalling and Busy | Busy

Related Topics

- Line Status: Multi-Color (LED) Indication

- 69xx IP Phone Status Indicators