asterisk users - Jan 2007 - "disconnect clear time" -- calling party control and TDM-400

Hi:

Is there any way to adjust the detection threshold for kewlstart
signalling on the TDM-400 cards?

Example:

The telco provides a 100 ms "open loop" or battery drop to indicate
remote party hangup. If the zaptel driver expects to see a 350 ms drop,
it will never detect the hangup and sit on the line.

Many PBXs let you adjust this number.

Any ideas, anyone?

Thanks,

-Stephen-