[asterisk-users] Bristuff vs. vISDN vs. mISDN for hfc card ?

[Robert Rozman]

Hi,

some time ago we used bristuffed Asterisk for our hfc cards cause it offered 
more features (echo cancellation most important) and was quite stable...

I'm seeing now (I'm putting together Asterisk after a long time with hfc 
card) that there are now 3 choices for hfc chipsets :
vISDN, mISDN and bristuff.

What are pros and cons of each of them and what do you put in your Asterisks 
? How they differ in functionality ?

Thanks in advance,

regards,

Rob.