Asterisk can use the same Nortel Meridian Features?

Hi… i our company we have a Nortel Meridia Telephony central (NO IP)
and have the feature to display in all phones, what line is ringing, display to all phones when someone is talking…
Does Asterisk support all that Features?

I’m having problem to display all phones when i’m using the phone line 1
Someones talk me about use SLA or BLF but… in my opinion isn’t enought cool as Meridian…
What you think guys?

The BLF in Asterisk should be able to do the same as what you have described above.