Back to the subject of line cards... I wasn't crazy about the 400H cards. They worked... ok... but sometimes instead of going on hold (when you press the hold button) they would just hang up. The ITT cards work pretty well, with the exception of one that seems to be cooked. The modified 400D cards work by far the best. That modification cost me a dollar for four cards and took about 5 minutes to do them all.
