We've got some Tadiran Coral Flexset 280S IP Phones with 2 different catalog numbers and just wanted to know what the difference was between the two.

Some of the phones have catalog number 72440165985 and some of the phones have catalog number 72440165900.

Is there a different firmware between the 2 phones or something else going on here? I just want to know if there is a significant difference between the two.