We have checked the T-1 settings on this system, it keeps going down. We had a vendor meet with both of their carriers. The carriers keep seeing errors from the switch. They advised the customer to replace the T-1 card, but before they do this, we would like to know if there is any other reason this could keep happening? The card and Security Pal are a bit pricing for the customer to purchase if this is not the reason. We would like a second opinion from the experts. Thanks guys.