The Tech Handbook says that, by default, a system can have a maximum of 439 Busy Lamp GROUPS. This means that you can only monitor 439 stations. It also says that each of the 439 groups can contain a MAXIMUM of 16 members within the group. This means that only 16 members can have an appearance of the same BLF. Hope that helps clears it up.
I can't believe I am suggesting this, but if your site requires that more than 16 stations see a BLF appearance, then you may want to consider Your Assistant. In a nutshell, YA provides presence indication of Your Assistant users via YA client software that is installed on the desktop PC of each YA user. The client software interacts with your Mitel IP phone. The YA client will show when other YA user's phone are busy, ringing, or idle.
That being said, YA does not really have a favorable reputation with many technicians or earlier customers of the product. The earlier versions were VERY problematic. While most issues have been addressed, it still has a bad taste to many techs. Marketing and Sales absolutely love the product because it is an add-on product (GRAVY!!!)
_______________________________________________________________
There is no 'I' in Team...
But there is in 'Win', 'Solutions', 'Promotion' & 'Leadership'