Configuration Works with below device : AX2D ( 2 T1/E1/J1 ports) 64 channels G.168–2002 echo cancellation in hardware 1024 taps/128 ms tail per channel on all channel densities DTMF decoding and tone recognition Voice quality enhancement: music protection, acoustic echo control, and adaptive noise reduction Does not increase the physical size of the card, and no additional slot is required |