Some of the later versions of WE 400 cards had a weird symptom: If you picked up a line and immediately tried to place the line on hold, the call would drop. The card needed a few seconds connected to the T & R before it would hold. I believe that the 400G or 400H cards did this. It was most unsettling for an installer back in those days, not knowing that the card operated that way by (poor) design.


Arthur P. Bloom
"30 years of faithful service...15 years on hold"