Key mapping on a physical terminal (Teleray 1060) when using getty

I have an old physical terminal (Teleray 1060) that I am attempting to use as a Linux terminal using getty. I have started a login session just fine. However, my terminal lacks an enter key, having both a carriage return and a line feed key. Neither of these function as an enter key so I am unable to login. Would it be possible to reassign the carriage return to function as an enter key. I am very inexperienced whith Linux. I am using Xubuntu 20.04.1 and a USB to serial cable. Ctrl+M works on a virtual terminal. I tried using Ubuntu 18.04.5 and now it seems to work fine. Is there something that has been changed between the two versions which may affect this? The command used to start login session:

enable serial-getty@007.service --now

Output of

-a

as root on virtual terminal:

38400 baud; rows 46; columns 94; line = 0;
intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = ^E; eol2 = ;
swtch = ; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V;
discard = ^O; min = 1; time = 0;
-parenb -parodd -cmspar cs8 -hupcl -cstopb cread -clocal -crtscts
-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany
-imaxbel iutf8
opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
isig icanon iexten echo

Thanks