On Mon 24 Jun at 12:27 Angus Tong (3:712/841.1) wrote to All:

 AT> Hi,

 AT>     Just noticed that the last reason for disconnect was ..
 AT> Reason is GSTN Cleardown
 AT> ..What does that mean??

It means that the remote end had, if on a LAPM connection, had sent an
L-Release primitive, which may have been followed by the V.34 code in the
remote modem issuing a GSTN Cleardown "I wish to hang up the
phone" to your modem.

This stops the modems from attempting to retrain and maintain connection
when the remote modem has signalled that it was disconnecting the call.

GSTN = General Switched Telephone Network.
 
--- msgedsq 2.1