Digium PRI Hardware Echo Cancellation


Does anyone know how I can tell that the hardware echo cancellation module on a Digium PRI card is being used?

If I do a ‘dahdi show channel 1’ I can see the echo cancellation is on the channel (128 taps) but it doesn’t say if that is hardware or software.

I have found a way to tell on a sagnoma card, but not Digium.

Any help would be greatfully received.