[Asterisk-Users] Channel Banks

[TC]

>Do not buy an adtran - no auto impedance match on FXO ports (echo, echo,
>echo) 
and you might also get AM radio interfernce on the FXO as well
but you can get some inexpensive tellab inline echo cans
that make the 750 work very well with 0 echo
usually much less expensive than the CAC gear even on flea bay
>and no call disconnect supervision on FXO ports.
This is not TRUE, they do detect reverse polarity on hangup