[asterisk-users] Telco MWI Detection on TDM400 Interface?

[Jim Duda]

I use a TDM400 card to interface with my telco.  I used asterisk voice 
mail.  However, if I'm on the telco line while another call comes in, 
obviously it cannot go to asterisk voice mail but instead bounces to the 
Telco voice mail.

Is there any means by which I can get asterisk detect the Message 
Waiting Indicator (MWI) from the telco?  Is there some application or 
variable which can be used to identify an active MWI from the Telco?

Thanks,

Jim