I am not a Samsung guy, so take my advice with a grain of salt ;-)
I think that you may have a problem with different pin layouts on the panel your amphenols are terminated at and the rest of your cabling system. This would affect your phones if they are two-pair phones. This would not the case if they are single-pair phones. Basically, what happens is the second pair on a T568A panel would end up in place of third pair on a T568B jack. Some phones use the second pair for delivering power, so, it would essentially be dead if power for the phone ends up not where it's expected. Here is a link to these pin layouts:
them out, see if this problem applies to you.
To fix this problem you would have to re-terminate the amphenol panel or use special cords converting A to B. I personally would prefer re-terminating the amphenol panel because all you need to do is to move pair 2 to 3 (or vice versa) on every port, and it's easy to do if you have a punch-down tool.