qsig is a common lang that mixed source equiptment can share.. between my nortel 81c and the cisco call manager or between nortel and rolm... rolm does not support an iterface type 81c, nortel can't speak rolm, but they both speak qsig..
we used dlci numbers almost the same as layer 2 switching, back when frame was new.. been a while but they are still used...
ani,, automatic number id.. the kind you get at home, i call you see my name (ss7 database) and my number..ani database..
ali.. positron coined, automatic line id.. ties the ali to a get file, you can can block your number when you call me, but dial 911 and they can still see your number, and your address and if they want to tie it in, your wants and warrents...
john poole
bellsouth business
columbia,sc