Does the legend have a cordless phone like Nortel? The one that plugs directly into a station port without an ATA?

There were several made.

The MLC-5 (junk, stay away from) requires an ATL port on an 008 or 408 card.

The newer TransTalk MDW series were a little better, but not much. The first was the 9000, then the 9010. The 9030p and 9031p were smaller versions that had a base station that worked independently of the charger. The base station was hooked into the switch via an ATL port or a Partner ETR port. Button mappings differ between the two. The 9031p had a backlit LCD. I know there's a 9040, but don't know too much about it. I'm sure one of the other guys here will chime in. AFAIK, I don't think there was a native cordless/wireless solution that plugged directly into an MLX port.