5 premium features at a glance, Busy lamp field (blf) – Obihai OBi1000 User Guide User Manual

Page 31

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OBi1000  User  Guide  

 

           Copyright  Obihai  Technology  

31  

5 Premium Features at a Glance

The  features  in  this  section  have  special  requirements  on  the  soft  switch  or  PABX  that  provides  the  services.  The  
availability  and  operation  of  these  features  may  depend  on  the  particular  service  provider  soft  switch  or  office  PABX  
in  use  and  how  it  is  set  up.  Here  we  only  discuss  feature  functionalities  and  common  behavior  generically.  Please  
consult  your  local  phone  administrator  to  get  the  details  and  availability  of  these  features  at  your  location.  

Busy Lamp Field (BLF)

Busy  Lamp  Field  (BLF)  is  a  common  collaborative  feature  for  a  group  of  users  to  monitor  calls  on  one  or  more  
extensions.  BLF  is  a  feature  for  the  monitoring  of  an  extension.  The  detection  and  notification  of  events  occurring  at  
the  monitored  extension  are  carried  out  by  the  soft  switch  or  PABX.  
 
When  the  BLF  service  is  available  with  a  specific  voice  service,  the  BLF  function  can  be  assigned  to  a  feature  key  
bound  to  that  voice  service  to  monitor  an  extension  that  is  also  on  that  voice  service.  We  refer  to  a  feature  key  that  

is  assigned  the  BLF  function  as  a  “BLF  key”.  One  BLF  key  monitors  one  extension  only.  Your  phone  administrator  can  
assign  as  many  BLF  Keys  as  there  are  feature  keys  available,  to  monitor  as  many  extensions.  The  following  table  lists  
the  typical  events  that  are  monitored  with  a  BLF  Key.  The  table  also  shows  the  operation  that  can  be  invoked  when  
the  respective  event  occurs  and  the  LED  pattern  indicating  that  particular  event.  Two  or  more  events  may  be  
happening  at  the  same  time  at  the  monitored  extension,  for  example,  the  monitored  extension  may  be  connected  
on  a  call  (hence  Busy)  plus  have  a  ringing  call  and  a  holding  call  at  the  same  time.  The  LED  pattern  can  only  show  
one  event  at  a  time.    

 
The  OBi  treats  a  BLF  key-­‐press  as  pressing  a  speed  dial  to  call  the  monitored  extension  regardless  if  any  event  is  
taking  place  at  the  monitored  extension.  To  carry  out  another  BLF  event-­‐dependent  operation,  the  user  must  invoke  
the  corresponding  feature  key  item  on  the  screen  and  select  the  appropriate  soft  key  option.  The  feature  key  item  
also  provides  more  details  of  each  event,  such  as  the  caller  ID  of  the  remote  party.    
 

Icon  

BLF  Event   Description  

Available  Operation  

LED  Pattern  

 

Ringing    

Monitored  extension  

is  ringing  

Answer  the  call.  This  operation  is  

known  as  Directed  Call  Pickup  

Fast  blinking  

red  

 

Busy    

Monitored  extension  
is  on  a  call  or  making  a  
call  

Barge  in  to  either  a)  fully  participate  
in  the  call  or  conference,  or  b)  listen  
to  the  conversation  without  talking,  
or  c)  listen  to  the  conversation  but  

talk  only  to  the  monitored  extension  
(a.k.a.  coaching  or  whispering).  
There  can  be  other  variations  along  
these  lines.  

Steady  red  

 

Holding  

Monitored  extension  
is  holding  one  or  more  
calls  

Resume  and  take  over  the  call  

Slow  blinking  
red  

 

Call  
Parked  

A  call  is  parked  against  
the  monitored  

extension  

Pickup  the  call  from  the  parking  slot  

Periodic  short  
blink  in  red  

 

Idle  

Monitored  extension  
is  idle  

Make  or  transfer  a  call  to  the  
extension  

Steady  green  

 

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