What are the differences between segment packet and frame?

Theoretically Data Link Layer puts packet into frame by adding header and tail to the packet but how is it possible when you take into consideration CCSDS packet definition:

"

A packet is a block of data with length that can vary between successive packets, ranging from 7 to 65,542 bytes, including the packet header.

Packetized data are transmitted via frames, which are fixed-length data blocks. The size of a frame, including frame header and control information, can range up to 2048 bytes.

"

According to this, frame is smaller than packet, so how can you put packet into frame??